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Article: British Inventors Develop Air-Borne Micro-Organisms Air Filter
- Article from:
- US Fed News Service, Including US State News
- Article date:
- October 24, 2007
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ALEXANDRIA, Va., Oct. 24 -- Helen Dukes and John David Payne, both of Blackley, Great Britain, have developed an odors reduction air filter.
According to the U.S. Patent & Trademark Office, the invention relates to an "air-filter for a circulating and/or recirculating air system using a filter medium containing a microbiologically effective amount of a polymeric biguanide or salt thereof. Also claimed is a method for reducing odors and/or air-borne micro-organisms in a circulating or recirculating air system using the air-filter, and a method for protecting an air-filter medium against microbial degradation by incorporating in, or on, the medium a microbiologically effective amount of ...
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Article: Virginia Inventor Develops Air Filter Timer
US Fed News Service, Including US State News;
September 7, 2007 ;
424 words
... ... invention relates to a "novel air filter and timer for alerting ... changing or cleaning the air filter that it is time for servicing ... separately and affixable to an air filter. The alarm sounds after ... more information about US Fed News federal patent awards ...
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