Patents by Inventor Karlheinz Herber

Karlheinz Herber 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).

  • Process for manufacturing a plastic shoe
    Patent number: 5163198
    Abstract: A plastic shoe has a steel cap (3) which has a cushion (4) in the upper region inside the shoe. In its other regions the steel cap (3) is surrounded on the inside and outside by plastic foam which forms the upper (1) and the bottom (2) of the plastic shoe (2). The cushion (4) consists of an air-absorbing material, so that the air displaced under the cap during the foam-filling of the mold does not lead to voids in the plastic.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: November 17, 1992
    Assignee: Alsa GmbH
    Inventor: Karlheinz Herber
  • Work shoe
    Patent number: D325805
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: May 5, 1992
    Assignee: ALSA GmbH
    Inventor: Karlheinz Herber