US Fed News Service, Including US State News back issues from Thursday, March 15:
New Jersey Inventors Develop Fire Code-Compatible Storage Rack Shelving
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Richard M. Skulnik of Saddle River, N.J., has developed fire code-compatible and high load bearing-compatible storage rack shelving. According to the U.S. Patent & Trademark Office, the invention relates to an "improved fire code-compatible and high load ...
Japanese Inventor Develops Communication System
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 --Osamu Iwasaki of Fujinomiya, Japan, has developed a communication system using a sheet light guide. According to the U.S. Patent & Trademark Office: "In a communication system using a sheet light guide which is formed in a manner that the sheet light guide ...
Oregon Inventors Develop Optical Time Delay Apparatus
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Christoph M. Greiner and Thomas W. Mossberg, both of Eugene, Ore., and Dmitri Iazikov of Springfield, Ore., have developed an optical time delay apparatus incorporating diffractive element sets. According to the U.S. Patent & Trademark Office: "An optical ...
Alabama Inventors Develop Heat Transfer Assembly
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Donald W. Mathews of Georgiana, Ala., and John D. Lamberth of Montgomery, Ala., have developed a method and a heat transfer assembly that makes use of an adhesive to form a joint structure between two members, such as two heat transfer components. According ...
California Inventors Develop Cable Management System
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Marius Popescu of Livermore, Calif., and Jay K. Osborn of Palo Alto, Calif., have developed a cable management system for a component mounted in a rack that includes a cable management arm and a bracket. According to the U.S. Patent & Trademark Office: ...
New Zealand Inventors Develop Portable Fluid Heating Tool
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Anthony J Higham and Brendon Tait, both of Auckland, New Zealand, and Peter Brude Clark of Warkworth, New Zealand, have developed a portable fluid heating tool that is capable of heating a flow of fluid to a desired temperature for killing ...
California Inventors Develop Micro-Optic Devices Design
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Vlad J. Novotny of Los Gatos, Calif., and Parvinder Dhillon of Fremont, Calif., have developed methods for forming an array of micro-electro-mechanical systems (MEMS) optical elements. According to the U.S. Patent & Trademark Office: "An embodiment of the ...
South Korean Inventors Develop Dual-Band Wavelength Division Multiplexer
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 --Dong-Kyoon Han of Seongnam-si, South Korea, and Kyoung-Youm Kim of Seoul, South Korea, have developed a dual-band wavelength division multiplexer. According to the U.S. Patent & Trademark Office: "A dual-band wavelength division multiplexer is disclosed. The ...
Dutch, German Inventors Develop Moulding Sand Production Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Cornelis Grefhorst of Zz Winterswijk, Netherlands, and Karl Koch of Borken, Germany, have developed a method that is for producing a moulding sand that is in particular recirculated, for foundry purposes. According to the U.S. Patent & Trademark Office: ...
Oregon Inventors Develop Reconfigurable Optical Add-Drop Multiplexer
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Christoph M. Greiner and Thomas W. Mossberg, both of Eugene, Ore., and Dmitri Iazikov of Springfield, Ore., have developed a reconfigurable optical add-drop multiplexer incorporating sets of diffractive elements. According to the U.S. Patent & Trademark ...
German Inventors Develop Housing Arrangement with Two Junction Boxes
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Jens Andresen of Blomberg, Germany, and Ralf Lange of Horn-Bad Meinberg, Germany, have developed a housing arrangement with at least two junction boxes. According to the U.S. Patent & Trademark Office, the invention relates to a "housing arrangement with ...
California Inventors Develop Power Driven Surgical Saw Blade
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Michael G. Fisher of El Dorado Hills, Calif., and Kevin Cordes of Placerville, Calif., have developed a power driven surgical saw blade. According to the U.S. Patent & Trademark Office: "A saw blade comprising a blade body having a longitudinal axis, a ...
Japanese Inventor Develops Automatic Developing Machine Development Replenisher
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Hiroyuki Sasayama of Haibara-gun, Japan, has developed a method for replenishing a development replenisher in an automatic developing machine for a photosensitive lithographic printing plate precursor. According to the U.S. Patent & Trademark Office, the ...
Texas, Louisiana Inventors Develop Naphthalene Removing Process
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Mitchell E. Loescher and Christopher C. Boyer, both of Houston, Steven E. Silverberg of Baytown, Texas, and Michael J. Keenan of Baton Rouge, La., have developed a process for the reduction of naphthalene in process streams containing alkylaromatic ...
California Inventors Develop Time Compression Apparatus
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Christopher Moulios of Cupertino, Calif., and Sol Friedman of Sunnyvale, Calif., have developed a method and an apparatus implement time compression and an expansion of audio data, with dynamic tempo change during playback. According to the U.S. Patent & ...
U.S., French Inventors Develop Vertebral Interbody Fusion Instrumentation Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Eddie Ray III and Bradley T. Estes, both of Cordova, Tenn., Lawrence M. Boyd of Memphis, Tenn., and Mingyan Liu of Bourge la Reine, France, have developed a method and instrumentation for vertebral interbody fusion. According to the U.S. Patent & ...
Texas Inventors Develop Oil Base Drilling Mud, Residues Displacement Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Qi Qu of Spring, Texas, Richard F. Stevens, Jr. of Sugar Land, Texas, and David Alleman of Houston, have developed a method for displacing oil base drilling muds and/or residues from oil base drilling mud using water-in-oil emulsion. According to the U.S ....
Israeli Inventor Develops Spinal Stenosis Treating Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Assaf Dekel of Neve-Savyon, Israel, has developed a method and an apparatus for spinal procedures. According to the U.S. Patent & Trademark Office: "A method of treating spinal stenosis, in which a rasp is brought through a part of a spinal channel and ...
Japanese Inventors Develop Current Control Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Takafumi Nakamori of Mizuho, Japan, and Atsushi Wada of Ogaki, Japan, have developed a current control method and an application thereof. According to the U.S. Patent & Trademark Office: "A current supply circuit supplies a bias current to operational ...
Illinois Inventors Develop Linear 2-Phenyl-Alkanes Production Staged Process
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- R. Joe Lawson and Paul T. Barger, both of Arlington Heights, Ill., Andrea G. Bozzano of Des Plaines, Ill., Bipin V. Vora of Naperville, Ill., and Kurt A. Detrick of Glen Ellyn, Ill., have developed a staged process for producing linear ...
Lexel Imaging Systems Wins $55,267 Contract
Mar 15, 2007 ... MECHANICSBURG, Pa., March 15 -- The U.S. Navy has awarded a $55,267 contract to Lexel Imaging Systems Inc., Lexington, Ky., for the repair and modification of electron tubes. The contract was awarded by the Naval Inventory Control Point, Mechanicsburg, Pa. For more ...
Honeywell International Wins $70,000 Contract
Mar 15, 2007 ... PHILADELPHIA, March 15 -- The U.S. Navy has awarded a $70,000 contract to Honeywell International Inc., Tempe, Ariz., for the repair and modification of valves. The contract was awarded by the Naval Inventory Control Point, Philadelphia. For more information ...
Stag Enterprise Wins $512,741 Contract
Mar 15, 2007 ... MECHANICSBURG, Pa., March 15 -- The U.S. Navy has awarded a $512,741 contract to Stag Enterprise Inc., Ball Ground, Ga., for furnace, steam plant and drying equipment and nuclear reactors. The contract was awarded by the Naval Inventory Control Point, Mechanicsburg, Pa. For ...
Personnel Protection Wins $138,474 Contract
Mar 15, 2007 ... MECHANICSBURG, Pa., March 15 -- The U.S. Navy has awarded a $138,474 contract to Personnel Protection Inc., McHenry, Ill., for fire fighting, rescue and safety equipment. The contract was awarded by the Naval Inventory Control Point, Mechanicsburg, Pa. For more ...
Sargent Controls & Aerospace Wins $46,000 Contract
Mar 15, 2007 ... MECHANICSBURG, Pa., March 15 -- The U.S. Navy has awarded a $46,000 contract to Sargent Controls & Aerospace, Tucson, Ariz., for the repair and modification of manifold assemblies. The contract was awarded by the Naval Inventory Control Point, Mechanicsburg, Pa. For ...
L-3 Communications Wins $53,645 Contract
Mar 15, 2007 ... MECHANICSBURG, Pa., March 15 -- The U.S. Navy has awarded a $53,645 contract to L-3 Communications, Williamsport, Pa., for the repair and modification of electron tubes. The contract was awarded by the Naval Inventory Control Point, Mechanicsburg, Pa. For more ...
Friction Materials Wins $49,280 Contract
Mar 15, 2007 ... MECHANICSBURG, Pa., March 15 -- The U.S. Navy has awarded a $49,280 contract to Friction Materials, Long Beach, Calif., for the repair and modification of drum clutches. The contract was awarded by the Naval Inventory Control Point, Mechanicsburg, Pa. For more ...
Honeywell International Wins $38,500 Contract
Mar 15, 2007 ... MECHANICSBURG, Pa., March 15 -- The U.S. Navy has awarded a $38,500 contract to Honeywell International Inc., Tempe, Ariz., for the repair and modification of direct linear valves. The contract was awarded by the Naval Inventory Control Point, Mechanicsburg, Pa. For more ...
Argotec Wins $39,555 Contract
Mar 15, 2007 ... MECHANICSBURG, Pa., March 15 -- The U.S. Navy has awarded a $39,555 contract to Argotec Inc., Fort Lauderdale, Fla., for sonar hydrophones. The contract was awarded by the Naval Inventory Control Point, Mechanicsburg, Pa. For more information about US ...
BAE Systems Wins $43,935 Contract
Mar 15, 2007 ... PHILADELPHIA, March 15 -- The U.S. Navy has awarded a $43,935 contract to BAE Systems, Greenlawn, N.Y., for the repair and modification of infrared receivers. The contract was awarded by the Naval Inventory Control Point, Philadelphia. For more information about ...
Texas Inventor Develops Gamma Linolenic Acid Production Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Terry L. Thomas of College Station, Texas, has developed a linoleic acid that is converted into gamma-linolenic acid (GLA) by the enzyme DELTA 6-desaturase. According to the U.S. Patent & Trademark Office: "The present invention is directed to isolated ...
California Inventor Develops Ornamental Design for Personal Tracking, Location Device
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Otis T. Wilder of Carson, Calif., has developed an ornamental design for a personal tracking and location device, the U.S. Patent & Trademark Office announced. The inventor was issued U.S. Patent No. D538,191 on March 13. The original application ...
California Inventor Develops Delta Sigma Modulator
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Sandeep K. Gupta of Aliso Viejo, Calif., has developed a low power, high signal-to-noise ratio, high order delta sigma modulator stage withintegrators with pipelined cross coupled input circuits. According to the U.S. Patent & Trademark Office: "In a high ...
Maryland, District of Columbia Inventors Develop Semiconductor Device with Curved Waveguides
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Mario Dagenais of Chevy Chase, Md., Simarjeet Saini of Columbia, Md., Peter J. S. Heim of Washington, have developed semiconductor devices with various combinations of curved waveguides and mode transformers. According to the U.S. Patent & Trademark ...
U.S., Irish Inventors Develop Orthopaedic Fixation Pin Extraction Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Matthew Seelig of Upper Saddle River, N.J., and Jack O'Loughlin of Limerick, Ireland, have developed an instrument for gripping an orthopaedic fixation pin during a surgical procedure. According to the U.S. Patent & Trademark Office, the invention relates ...
Japanese Inventors Develop Recording, Reproduction Apparatus
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Yasushi Ayaki of Neyagawa, Japan, has developed a recording and reproduction apparatus, medium and information assembly. According to the U.S. Patent & Trademark Office: "A recording and reproduction apparatus has a recording and reproduction control means of ...
California Inventors Develop Electrosurgical Instrument
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Csaba Truckai of Saratoga, Calif., John H. Shadduck of Tiburon, Calif., and Bruno Strul of Portola Valley, Calif., have developed an electrosurgical instrument coupled to a radiofrequency (RF) generator. According to the U.S. Patent & Trademark Office: ...
Italian Inventor Develops Vehicle Wheel Tires Fitting, Removing Machine
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Dido Boni of Reggio Emilia, Italy, has developed a machine for fitting and removing vehicle wheel tires. According to the U.S. Patent & Trademark Office, the invention relates to a "machine for fitting and removing vehicle wheel tires, comprising a ...
Ohio Inventor Develops Soybean Variety XB38T05
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Debra Kay Steiger of Wauseon, Ohio, has developed a seed of soybean variety XB38T05. According to the U.S. Patent & Trademark Office: "According to the invention, there is provided a novel soybean variety designated XB38T05. This invention thus relates to ...
Dutch Inventor Develops Ornamental Design for Moving Picture Experts Group Layer-3 Audio Player Speaker
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Sebastiaan R. Peersman of Rijnsburg, Netherlands, has developed an ornamental design for a speaker for an moving picture experts group layer-3 audio player, the U.S. Patent & Trademark Office announced. The inventor was issued U.S. Patent No. D538,264 on ...
Massachusetts Inventors Develop Fire Extinguishers Remote Inspection Apparatus
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- John J. McSheffrey of Hingham, Mass., and Brendan T. McSheffrey of Newton, Mass., have developed an apparatus for remote inspection of fire extinguishers station inspection. According to the U.S. Patent & Trademark Office: "An apparatus for remote ...
Missouri, Iowa Inventors Develop Corn Variety I285287 Plant
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Steven K. Johnson of Chesterfield, Mo., and Bradley A. Sockness of Story City, Iowa, have developed plants and seeds of corn variety I285287. According to the U.S. Patent & Trademark Office: "According to the invention, there is provided seed and plants ...
South Korean Inventors Develop Ventilating System Heat Exchanger
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Seong-Hwan Lee and Soo-Yeon Shin, both of Kyungsangnam-Do, South Korea, and Min-Chul Cho of Busan, South Korea, have developed a heat exchanger of a ventilating system. According to the U.S. Patent & Trademark Office: "A heat exchanger of a ventilating ...
U.S., Dutch Inventors Develop Well String Assembly
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Earl Eugene Berkheimer of Arcadia, Okla., Douwe Johannes Runia of Rijswijk, Netherlands, have developed a well string assembly that is suitable for performing an operation in relation to a borehole and/or earth formation external of the well string in the ...
Texas Inventor Develops In-Car Digital Video Recording
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Robert S. Gammenthaler of Princeton, Texas, has developed an in-car digital video recording with Moving Picture Experts Group (MPEG)-4 compression for police cruisers and other vehicles. According to the U.S. Patent & Trademark Office: "An in-car video ...
U.S., Spanish Inventors Develop Polycarbonate Making Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Patrick J. McCloskey of Watervliet, N.Y., Alberto Nisoli of Niskayuna, N.Y., Lina Prada of Murcia, Spain, and Gerardo Hidalgo of Cartagena Murcia, Spain, have developed a method for making polycarbonate. According to the U.S. Patent & Trademark Office: "A ...
Japanese Inventors Develop Display Devices Digital Driver
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Jun Koyama of Sagamihara, Japan, and Yutaka Shionoiri of Isehara, Japan, have developed a digital driver for display devices. According to the U.S. Patent & Trademark Office: "A digital driver for display devices which can prevent the delay of digital ...
Indian Inventors Develop Selective Liquid Phase Oxidation
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Raghunath Vittal Chaudhari, Vilas Hari Rane, Amit Arwind Deshmukh and Sunil Sadashiv Divekar, all from Pune, India, have developed a selective liquid phase oxidation of toluene to benzaldehyde. According to the U.S. Patent & Trademark Office: "The present ...
California Inventors Develop Electrosurgical Electrode Movement Control Device
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- John A. Scholl of Danville, Calif., Duane W. Marion of Santa Clara, Calif., George A. Morrison of Redwood City, Calif., and Jeffrey A. Smith of Petaluma, Calif., have developed devices and methods for controlling movement of an electrosurgical ...
Illinois Inventors Develop Motion Vector Block Match Quality Determination Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Raghavan Subramaniyan of Schaumburg, Ill., and Bhavan Gandhi of Vernon Hills, Ill., have developed a method and an apparatus for determining block match quality of a block match for a candidate motion vector in a video encoder system. According to the U.S ....
Colorado Inventor Develops Inbred Maize Line PH5DP
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Donald Lee Morrow of Cuchara, Colo., has developed an inbred maize line designated PH5DP. According to the U.S. Patent & Trademark Office, the invention relates to an "inbred maize line, designated PH5DP, the seeds and plants of inbred maize line PH5DP, ...
Wisconsin, Massachusetts, Michigan Inventors Develop Asymmetric Hydroformylation Process
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Clark Landis of Madison, Wis., Thomas P. Clark of Somerville, Mass., and Jerzy Klosin of Midland, Mich., have developed diazaphospholane ligands for asymmetric catalysis. According to the U.S. Patent & Trademark Office: "This invention relates to ...
Austrian Inventor Develops Inbred Maize Line PH951
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Joachim Ernst Kramer of Macomb, Austria, has developed an inbred maize line PH951. According to the U.S. Patent & Trademark Office, the invention relates to an "inbred maize line, designated PH951, the plants and seeds of inbred maize line PH951, methods ...
Japanese Inventors Develop Vehicle Air-Conditioner
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Junichiro Hara of Ashikaga, Japan, and Yoshinobu Iizuka of Tochigi, Japan, have developed a vehicle air-conditioner which detects temperatures on a passenger to control air-conditioning. According to the U.S. Patent & Trademark Office: "The vehicle ...
Delaware, Pennsylvania Inventors Develop Isoflavonoid Levels Increasing Methods
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Brian McGonigle of Wilmington, Del., and Joan T. Odell of Unionville, Pa., have developed methods to increase the isoflavonoid levels in plants and plants producing increased levels of isoflavonoids. According to the U.S. Patent & Trademark Office: "This ...
Texas Inventors Develop Subsurface Safety Valve Forming Tubing-Retrievable Milling Tool
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Cecil G. McGavern, III and Adrian V. Saran, both of Kingwood, Texas, and Winfield M. Sides, III of Bellaire, Texas, have developed a milling tool for forming an opening in the housing of a tubing-retrievable subsurface safety valve (TRSSV). According to the ...
Tennessee Inventors Develop Soybean Variety SE90076
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Michael S. Hawbaker of Cordova, Tenn., has developed a seed of soybean variety SE90076. According to the U.S. Patent & Trademark Office: "The instant invention relates to the novel soybean variety designated SE90076. Provided by the invention are the ...
Canadian Inventor Develops Video Data Editing Method
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Marc Bolduc of St-Luc, Canada, has developed an apparatus for editing original video data of a first format. According to the U.S. Patent & Trademark Office: "Original video data of a first format is edited. The first format video data has jitter frames ...
North Carolina, Arizona Inventors Develop Transgenic Plant Cell Transfonried with Nucleic Acid
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Oswaldo da Costa e Silva and Ruoying Chen, both of Apex, N.C., Nocha van Thielen of Cary, N.C., Rodrigo Sarria-Millan of Morrisville, N.C., and Hans J. Bohnert of Tucson, Ariz., have developed a cell cycle stress-related proteins (CCSRP) and methods of use in ...
German Inventor Develops Fluid Line with Pipe
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Janos Kertesz of Hofheim, Germany, has developed a fluid line that comprises a pipe with a sleeve of a woven or braided fabric. According to the U.S. Patent & Trademark Office: "A fluid line with a pipe provided with a sleeve of a woven or braided fabric, ...
New York Inventors Develop Low-Dose Computed Tomography Projection Noise Treatment
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Zhengrong Liang of Stony Brook, N.Y., Hongbing Lu of Setauket, N.Y., and Xiang Li of Centereach, N.Y., have developed a noise treatment of low-dose computed tomography projections and images. According to the U.S. Patent & Trademark Office: "A method for ...
Japanese Inventors Develop 2,4'-Dihydroxydiphenylsulfone Producing Process
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Yuichi Tomoda, Norihiro Taniguchi and Kazuaki Igarashi, all from Fukui, Japan, Takeo Hasegawa of Sakai-gun, Japan, and Gou Yoshino of Nyu-gun, Japan, have developed a process for producing 2,4'-dihydroxydiphenylsulfone. According to the U.S. Patent & ...
Irish Inventors Develop Digital Polar Modulation Systems
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Eoin Carey and Bernie Mullins, both of Cork, Ireland, have developed a digital polar modulation system that utilizes a power amplifier circuit which operates as a digital to analog converter. According to the U.S. Patent & Trademark Office, the invention ...
Japanese Inventors Develop Recording Data Editing Apparatus
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Nobuyuki Takasu, Masao Sasaki,Toshiaki Setogawa, Kentaro Tanaka and Ayato Nakagawa, all from Kanagawa, Japan, and Tsuyoshi Oda of Chiba, Japan, have developed an authoring apparatus for editing and making recording data composed of images or sounds which are recorded ...
Austrian Inventor Develops Adaptive Sigma-Delta Modulation System
Mar 15, 2007 ... ALEXANDRIA, Va., March 15 -- Clemens M. Zierhofer of Kundl, Austria, has developed a system and a method for adaptive sigma-delta modulation. According to the U.S. Patent & Trademark Office: "The system includes a input stage that produces a difference signal representing the ...