ALEXANDRIA, Va., March 24 -- Alex Kuo-Shen Wang of Las Vegas has developed an environmental protection ink cartridge with a control chip.
According to the U.S. Patent & Trademark Office: "The present invention provides an environmental protection ink cartridge control chip, wherein the control chip is structured to embody a central processing unit control circuit, a data bus and a plurality of memory chips. The control chip is installed on an ink cartridge, and transmits signals to a printer by means of the data bus."
An abstract of the invention, released by the Patent Office, said: "The memory chips separately provide functionality to monitor ink amount within the original ink ...