Patents by Inventor Norbert Sirot

Norbert Sirot 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).

  • Method of diffusing impurities in semiconductor bodies
    Patent number: 4124417
    Abstract: A method of diffusing doping impurities in semiconductor bodies by the transfer in the vapor phase from a source in a condensed form.The diffusion space is of the "half-open type" and a cold point is maintained in it at the end opposite to the location of the source which is placed near a restricted passage to the atmosphere surrounding the space.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: November 7, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Norbert Sirot, Robert Thevenon