Patents by Inventor Daniel Chistopher Merkel

Daniel Chistopher Merkel 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 manufacture of 1,1,1,3,3-pentafluoropropane and 1,1,1,3,3,3-hexafluoropropane
    Patent number: 5763706
    Abstract: An integrated manufacturing process for producing HFC-245fa, HFC-236fa or a mixture thereof by reaction of HCC-240fa, HCC-230 or a mixture thereof with HF. HCC-240fa, HCC-230 or a mixture thereof is reacted with hydrogen fluoride in a liquid phase in the presence of a fluorination catalyst. Optionally, produced HCl is removed by distillation. HF present is thereafter recovered by liquid-vapor extraction. Unsaturated compounds are then removed by photochlorination and HFC-245fa, HFC-236fa or a mixture thereof is obtained by distillation.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: June 9, 1998
    Assignee: AlliedSignal Inc.
    Inventors: Hsueh Sung Tung, Daniel Chistopher Merkel, Zenart Joseph Dziadyk, Clayton Herbert Carson, Hang Thanh Pham