Patents by Inventor John Douglas Mansell

John Douglas Mansell 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).

  • Removal of monochloroacetylene from chlorinated hydrocarbons
    Patent number: 4028426
    Abstract: Monochloroacetylene occurring as an impurity in 1,1-dichloroethylene is removed by chemical reaction in the presence of an aqueous HCl/cuprous chloride catalyst composition.
    Type: Grant
    Filed: November 18, 1975
    Date of Patent: June 7, 1977
    Assignee: PPG Industries, Inc.
    Inventor: John Douglas Mansell