Patents by Inventor Derrick J. Hesser

Derrick J. Hesser 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).

  • Patent number: 5633501
    Abstract: An ionization chamber for use in a smoke detector includes first and second outer electrodes and a non-reflective center electrode. The non-reflective center electrode can be formed as a metal electrode having a non-reflective coating or as a non-reflective, conductive plastic elements. The ionization chamber can be incorporated into combination smoke detector which includes a photoelectric sensor. A non-reflective center electrode, associated with the ion-type sensor is symmetrically located in the detector and displaced from the photoelectric sensor.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 27, 1997
    Assignee: Pittway Corporation
    Inventors: Peerouz Amleshi, Derrick J. Hesser