Patents by Inventor Richard Isaac Sequerra

Richard Isaac Sequerra 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: 5898257
    Abstract: The electron emitting cathode of an initiator (spark plug or ignitor) comprises a small button of high temperature, preferably austenitic, stainless steel powder welded to a support conductor. The stainless steel powder has distributed through it a dopant powder consisting of a minor portion of a highly stable oxide of an element having a low work function. The dopant powder has a much smaller mesh size than the stainless steel powder (1/5or less). Rare earth lanthanides are preferred that have a low work function, preferably under 3.0 eV and are not radioactive. Cerium, in the form of CeO.sub.2 is most preferred. The compositions of the low work function stainless steel electrodes and methods of making the same are disclosed.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: April 27, 1999
    Inventors: Richard Isaac Sequerra, Michael Albert DeLuca