Patents by Inventor Fritzbert Edouard

Fritzbert Edouard 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).

  • Alkyl zirconate color improvement
    Patent number: 4717772
    Abstract: The color of alkyl zirconate compounds that have become discolored is improved by treating the zirconate with a nitrogen oxide oxidant, such as nitric acid, to achieve the desired color improvement.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: January 5, 1988
    Assignee: Stauffer Chemical Company
    Inventor: Fritzbert Edouard