Patents by Inventor Karl Huff

Karl Huff 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).

  • Polycarbonate molding compounds stable to light ageing
    Patent number: 5552465
    Abstract: Polycarbonate molding compositions resistant to light aging and exhibiting an improved notched impact strength are disclosed. The compositions which are based on an aromatic polycarbonate, aromatic polyester carbonate or a polyester, contain a redox-catalyzed graft polymer of resin-forming monomers on a rubber, a phosphorus compound and a fluorinated polyolefin.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: September 3, 1996
    Assignee: Bayer Atkiengesellschaft
    Inventors: Dieter Witmann, Jochen Schoeps, Bernd Urbanneck, Karl Huff, Karl-Heinz Ott, Horst Peters
  • Laser-writable material
    Patent number: 4959406
    Abstract: Plastic containing small amounts of titanium dioxide and, if appropriate, carbon black and an additive which reduces the tracking resistance, for the production of laser-writable mouldings.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: September 25, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eckard Foltin, Hans-Werner Depcik, Karl Huff, Alfred Pischtschan, Mehmet C. Yesildag, Reiner Erkelenz