Patents by Inventor Michael A. Hofman

Michael A. Hofman 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).

  • Phosphorus compounds and their use as corrosion inhibitors for perfluoropolyethers
    Patent number: 6184187
    Abstract: Novel phosphorus compounds are effective corrosion inhibitors for perfluoropolyether lubricating oils and greases, and hydraulic fluids.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: February 6, 2001
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Jon L. Howell, Michael A. Hofman