Patents by Inventor Paul Gene Clemmer

Paul Gene Clemmer 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).

  • Process for the production of difluoromethane
    Patent number: 6844474
    Abstract: The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: January 18, 2005
    Assignee: Allied Signal Inc.
    Inventors: Paul Gene Clemmer, Addison Miles Smith, Hsueh Sung Tung, John Stephen Bass
  • Process for the production of difluoromethane
    Patent number: 6365580
    Abstract: The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: April 2, 2002
    Assignee: AlliedSignal Inc.
    Inventors: Paul Gene Clemmer, Addison Miles Smith, Hsueh Sung Tung, John Stephen Bass
  • Process for the production of difluoromethane
    Patent number: 5763708
    Abstract: The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.
    Type: Grant
    Filed: September 20, 1995
    Date of Patent: June 9, 1998
    Assignee: Allied Signal Inc.
    Inventors: Paul Gene Clemmer, Addison Miles Smith, Hsueh Sung Tung, John Stephen Bass
  • Process for the manufacture of 1,1,1,2-tetrafluoroethane
    Patent number: 5654494
    Abstract: This invention relates to a process for producing 1,1,1,2-tetrafluoroethane (HFC-134a). The process reacts, 1,1,1-trifluoro-2-chloroethane (HCFC-133a) and hydrogen fluoride in a first reactor. The product resulting from the first reaction step is brought to a second reactor together with trichloroethylene and hydrogen fluoride. The second reaction is conducted at a higher temperature than the first reactor. Optionally, HCl is removed prior to removal of the crude HFC-134a product. Unreacted HCFC-133a, trichloroethylene and hydrogen fluoride may be recycled back to the first reactor.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: August 5, 1997
    Assignee: AlliedSignal Inc.
    Inventors: Hsueh Sung Tung, Paul Gene Clemmer, Gustavo Cerri, Yuon Chiu, Stanley Michael Jaskot, Nemesio Rogelio Viso, Addison Miles Smith, Jeffrey Warren McKown, Jay Philip Friedenson