Patents by Inventor Atze de Haan

Atze de Haan 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).

  • Patent number: 4510687
    Abstract: There is provided a shaving apparatus comprising a shear plate with hair-entry apertures; and a cutting unit associated with and reciprocatory relative to the shear plate, the cutting unit including a frame. Cutters extend from the frame toward the shear plate, each cutter having a trapezoidal cross section and being in contact along its base with the shear plate. Two hair-pulling blades are respectively associated with and movable relative to the opposite sloping sides of each cutter, each hair-pulling blade normally being in contact with the shear plate. A pair of resilient elements respectively connects the opposite ends of each hair-pulling blade to the frame.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: April 16, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Gerrit J. Groothuis, Atze de Haan, Hendrik Poel, Eduard W. Tietjens, Jochem J. de Vries