Patents by Inventor Didier Caroulle

Didier Caroulle 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).

  • Sealing gasket for a roadway manhole
    Patent number: 4772154
    Abstract: A sealing gasket for an unlocked roadway manhole accessing a municipal sewage system is interposed between a cover 2 and a frame 1, and has an inverted L or hook-shaped cross-section including two spaced and parallel outwardly extending upper lips 18, 19 and two lower, oppositely extending lips 17, 20.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: September 20, 1988
    Assignee: Pont-a-Mousson S.A.
    Inventor: Didier Caroulle