Patents by Inventor Heck Klaus

Heck Klaus 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 production of oil control rings
    Patent number: 4106977
    Abstract: A process for the production of oil control rings having a scraper edge formed by a layer consisting of a wear-resistant material. The wear-resistant layer is embedded between two softer layers. Thereafter, the scraper edge is machined and the soft layers recessed by etching to expose the scraper edges.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: August 15, 1978
    Assignee: Audi Nsu Auto Union Aktiengesellschaft
    Inventor: Heck Klaus