Patents by Inventor Thomas J. Sheridan

Thomas J. Sheridan 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).

  • Ceramic igniter
    Patent number: 7675005
    Abstract: New ceramic resistive igniter elements are provided that comprise a first conductive zone, a resistive hot zone, and a second conductive zone, all in electrical sequence. In preferred igniters, at least a substantial portion of the first conductive zone does not contact a ceramic insulator. Preferred igniters of the invention have a rounded cross-sectional shape for at least a portion of the igniter length.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: March 9, 2010
    Assignee: Saint-Gobain Ceramics & Plastics, Inc.
    Inventors: Suresh Annavarapu, Thomas J. Sheridan
  • Compositions for ceramic igniters
    Patent number: 7195722
    Abstract: Ceramic igniter compositions are provided that contain components of conductive material and insulating material, where the insulating material component includes a relatively high concentration of metal oxide. Ceramic igniters of the invention are particularly effective for high voltage use, including throughout the range of from about 187 to 264 volts.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: March 27, 2007
    Assignee: Saint-Gobain Ceramics and Plastics, Inc.
    Inventors: Roger J. Lin, Craig A. Willkens, Kevin C. Solofra, Thomas J. Sheridan
  • Compositions for ceramic igniters
    Publication number: 20030160220
    Abstract: Ceramic igniter compositions are provided that contain components of conductive material and insulating material, where the insulating material component includes a relatively high concentration of metal oxide. Ceramic igniters of the invention are particularly effective for high voltage use, including throughout the range of from about 187 to 264 volts.
    Type: Application
    Filed: March 19, 2003
    Publication date: August 28, 2003
    Applicant: Saint-Gobain Industrial Ceramics, Inc.
    Inventors: Roger J. Lin, Craig A. Willkens, Kevin C. Solofra, Thomas J. Sheridan
  • Compositions for ceramic igniters
    Patent number: 6582629
    Abstract: Ceramic igniter compositions are provided that contain components of conductive material and insulating material, where the insulating material component includes a relatively high concentration of metal oxide. Ceramic igniters of the invention are particularly effective for high voltage use, including throughout the range of from about 187 to 264 volts.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: June 24, 2003
    Assignee: Saint-Gobain Ceramics and Plastics, Inc.
    Inventors: Roger J. Lin, Craig A. Willkens, Kevin C. Solofra, Thomas J. Sheridan