Patents by Inventor Hendrik W. Strijker

Hendrik W. Strijker 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).

  • Shaving unit for a shaver and shaver comprising such a shaving unit
    Patent number: 5170563
    Abstract: A shaving unit for a shaver is provided comprising a shear plate and a cutting member, one of the cooperating surfaces being covered with a friction-reducing layer comprising carbon and metal in an atomic ratio between 50.1/49.9 and 99.9/0.1.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: December 15, 1992
    Assignee: U.S. Philips Corp.
    Inventors: Adriaan Van der Grijn, Hendrik W. Strijker, Heinz Dimigen, Hubertus Hubsch