Patents by Inventor John Kevin Kaszyca

John Kevin Kaszyca 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).

  • Vertical PNP power device with different ballastic resistant vertical PNP transistors
    Patent number: 5736755
    Abstract: Disclosed are devices having emitters having resistive emitter diffusion sections are in a radial pattern. Such devices include vertical PNP power devices. The radial pattern of holes defines resistive emitter diffusion sections between adjacent holes. The resistive emitter diffusion sections result in a lower emitter ballast resistance due to the higher emitter sheet resistance of PNP devices. This allows all the periphery of the emitter to be active, not just two sides. The device has improved emitter ballast resistance while at the same time remaining efficient with low saturation resistance.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: April 7, 1998
    Assignee: Delco Electronics Corporation
    Inventors: John Rothgeb Fruth, John Kevin Kaszyca, Mark Wendell Gose