Patents by Inventor Michel Guinard

Michel Guinard 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 cyclic sulphates
    Patent number: 5274123
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: December 28, 1993
    Assignee: Rhone-Poulenc Rorer, S.A.
    Inventors: Roger Deruelle, Michel Guinard, Gerard Perrier