Patents by Inventor Charles G. Rudershausen

Charles G. Rudershausen 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).

  • Disproportionation of selected chlorofluoromethanes
    Patent number: 5146020
    Abstract: Trifluoromethane or monochlorodifluoromethane and carbon tetrachloride are converted to trichloromonofluoromethane, dichlorodifluoromethane and chloroform using a catalyst of activated aluminum and magnesium oxides.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: September 8, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Charles G. Rudershausen
  • Manufacture of difluorochloromethane
    Patent number: 4837370
    Abstract: A vapor phase process is disclosed for the selective disproportionation of fluorodichloromethane to difluorochloromethane and chloroform using a solid catalyst of an activated mixture of iron oxide and rare earth oxides.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: June 6, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Charles G. Rudershausen
  • Synthesis of fluorochloromethanes
    Patent number: 4678859
    Abstract: A vapor phase process for selective conversion of fluorodichloromethane and carbon tetrachloride to fluorotrichloromethane, difluorodichloromethane, difluorochloromethane and chloroform by contacting a solid catalyst of an activated mixture of iron oxide and rare earth oxides.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: July 7, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Charles G. Rudershausen