Patents by Inventor Philippe Fayet

Philippe Fayet 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).

  • Heterocyclic aromatic polymers of the polyimidazopyrrolone class, their prepolymers and their preparation
    Patent number: 4208505
    Abstract: Long-chain polymeric polyimidazopyrrolones (also referred to as pyrrones) have macromolecular chains of the formula: ##STR1## where A is a tetravalent organic radical and n is a large whole number. The polymers have film-forming properties and can be used in the production of laminates or composite materials, for example, friction pads.
    Type: Grant
    Filed: September 9, 1977
    Date of Patent: June 17, 1980
    Assignee: Centre National d'Etudes Spatiales
    Inventors: Alain M. M. Groult, Herve N. Tournier, Philippe Fayet