Patents by Inventor Karen C. Beal

Karen C. Beal 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).

  • Halogen-resistant media
    Patent number: 6774075
    Abstract: Ceramic mass and thermal transfer media suitable for use in thermal regenerative oxidizers made using a mixture of a ball clay, talc and optionally a dolomitic limestone have enhanced resistance to environments containing halogens and hydrogen halides. The media preferably comprises less than 0.25% by weight of alkali metal, expressed as the oxide, and has a cordierite: silica phase ratio of less than 1.2:1, as determined by X-ray diffraction.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: August 10, 2004
    Assignee: Saint-Gobain Ceramics & Plastics, Inc.
    Inventors: John S. Reid, Thomas Szymanski, Karen C. Beal
  • Halogen-resistant media
    Publication number: 20030216243
    Abstract: Ceramic mass and thermal transfer media suitable for use in thermal regenerative oxidizers made using a mixture of a ball clay, talc and optionally a dolomitic limestone have enhanced resistance to environments containing halogens and hydrogen halides. The media preferably comprises less than 0.25% by weight of alkali metal, expressed as the oxide, and has a cordierite: silica phase ratio of less than 1.2:1, as determined by X-ray diffraction.
    Type: Application
    Filed: June 13, 2003
    Publication date: November 20, 2003
    Applicant: Saint-Gobain Ceramics & Plastics, Inc.
    Inventors: John S. Reid, Thomas Szymanski, Karen C. Beal
  • Halogen-resistant media
    Patent number: 6605557
    Abstract: Ceramic mass transfer media suitable for use in thermal regenerative oxidizers made using a mixture of a clay, talc and optionally a dolomitic limestone have enhanced resistance to environments containing halogens and hydrogen halides.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: August 12, 2003
    Assignee: Saint-Gobain Norpro Corporation
    Inventors: John S. Reid, Thomas Szymanski, Karen C. Beal
  • Halogen-resistant media
    Publication number: 20020165081
    Abstract: Ceramic mass transfer media suitable for use in thermal regenerative oxidizers made using a mixture of a clay, talc and optionally a dolomitic limestone have enhanced resistance to environments containing halogens and hydrogen halides.
    Type: Application
    Filed: May 4, 2001
    Publication date: November 7, 2002
    Inventors: John S. Reid, Thomas Szymanski, Karen C. Beal
  • Method for making metal oxide varistors coated with passivating coating
    Patent number: 5387432
    Abstract: There is disclosed a passivating coating composition suitable for application as a collar to metal oxide varistor valve block cylindrical surfaces comprising a mixture of 64-74 parts by weight of a glass powder, 22-35 parts by weight of water, and 0.5-2 parts by weight of an additive comprising fumed silica, clay and urea.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: February 7, 1995
    Assignee: Hubbell Incorporated
    Inventors: Mohammad A. Alim, Karen C. Beal
  • Passivating coating for metal oxide varistors
    Patent number: 5366935
    Abstract: There is disclosed a passivating coating composition suitable for application as a collar to metal oxide varistor valve block cylindrical surfaces comprising a mixture of 64-74 parts by weight of a glass powder, 22-35 parts by weight of water, and 0.5-2 parts by weight of an additive comprising fumed silica, clay and urea.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: November 22, 1994
    Assignee: Hubbell Incorporated
    Inventors: Mohammad A. Alim, Karen C. Beal