Patents by Inventor Rachel A. Spooncer

Rachel A. Spooncer 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 bis(fluoromethyl)ether and difluoromethane
    Patent number: 5506364
    Abstract: A process for the production of bis(fluoromethyl)ether by contacting formaldehyde with hydrogen fluoride in a reaction/distillation vessel. The reaction/distillation vessel is preferably a reaction/distillation column through which formaldehyde and hydrogen fluoride preferably flow in counter current.The bis(fluoromethyl)ether may be converted to difluoromethane, preferably by heating the bis(fluoromethyl)ether to elevated temperature in the presence of a metal, metal oxide, metal fluoride or metal oxyfluoride catalyst.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: April 9, 1996
    Assignee: Imperial Chemical Industries PLC
    Inventors: John S. Martin, Thomas A. Ryan, Rachel A. Spooncer
  • Preparation of bis(fluoromethy)ether and difluoromethane
    Patent number: 5344998
    Abstract: A process for the production of bis(fluoromethyl)ether by contacting formaldehyde with hydrogen fluoride in a reaction/distillation vessel. The reaction/distillation vessel is preferably a reaction/distillation column through which formaldehyde and hydrogen fluoride preferably flow in counter current.The bis(fluoromethyl)ether may be converted to difluoromethane, preferably by heating the bis(fluoromethyl)ether to elevated temperature in the presence of a metal, metal oxide, metal fluoride or metal oxyfluoride catalyst.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: September 6, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventors: John S. Martin, Thomas A. Ryan, Rachel A. Spooncer