Patents by Inventor Fred H. Rash

Fred H. Rash 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 preparation of quinhydrones
    Patent number: 5149849
    Abstract: Disclosed is a process for the preparation of quinhydrones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalyst system comprising a cerium carboxylate and a cupric carboxylate.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: September 22, 1992
    Inventors: Michael Bellas, Yeong-Jen Kuo, Fred H. Rash