Patents by Inventor Holger Kreft

Holger Kreft 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).

  • Beam and strut girder
    Patent number: 4020202
    Abstract: A beam and strut girder for use in vehicles and in other constructions which comprises a girder construction consisting of a fiber reinforced plastic material.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: April 26, 1977
    Assignee: Maschinenfabrik Augsburg-Nurnberg AG
    Inventor: Holger Kreft
  • Process for the production of a hollow body of revolution and/or container
    Patent number: 3943867
    Abstract: Process for the production of a hollow body of revolution and/or container including the successive steps of forming a dish-shaped blank by a non-cutting shaping operation, forming a bottom portion and an adjoining tubular portion from the blank by a turning operation, and stretching at least the upper part of the bottom portion and the tubular portion to form a convex bottom and pipe portion respectively to form the thin walled body of revolution.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: March 16, 1976
    Assignee: Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
    Inventors: Horst-Lothar Erfurt, Holger Kreft, Walter Tronsberg