Patents by Inventor Peter A. Howson

Peter A. Howson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic switch comprising a photosensitive semiconductor
    Patent number: 5291056
    Abstract: An electronic switch comprises a photosensitive semiconductor (1,11,12) and a light source (14,24) which, when actuated, illuminates the semiconductor and causes the latter to become conductive, the photosensitive semiconductor being a sintered mixture comprising, by weight, 58-72% of cadmium, 14.8-21% of selenium, 7-15% of tellurium, 7-12% of sulphur, 0.1-1% of chlorine, and 0.005-0.1% of copper.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: March 1, 1994
    Assignee: Cooper Industries, Inc.
    Inventor: Peter A. Howson