Patents by Inventor Marlin G. Ridley

Marlin G. Ridley 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 preparing 1,1-dichloro-1-fluoroethane
    Patent number: 5105033
    Abstract: A manufacturing process is disclosed for preparing 1,1-dichloro-1-fluorethane by the addition of hydrogen fluoride to 1,1-dichloroethylene in the presence of a hydrofluorination catalyst providing 1,1-dichloro-1-fluoroethane in high yields and reduced 1,1-dichloroethylene content.Additionally, a process is disclosed for reducing the 1,1-dichloroethylene content of a mixture of 1,1-dichloroethylene and 1,1-dichloro-1-fluoroethane.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: April 14, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Steven H. Swearingen, John F. Wehner, Marlin G. Ridley