Patents by Inventor Bernhard Herkert

Bernhard Herkert 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).

  • Apparatus for coating webs of material having an open structure in depth
    Patent number: 4844009
    Abstract: A method and apparatus for vacuum coating of materials having a three-dimensional surface structure is disclosed that provides cooling, to prevent heat destruction of those materials during vacuum coating. The web is moved back and forth across the coating area, between rolls. A cooling film is rolled onto each roll with the web. As the web is unrolled, the film is unrolled and recooled before being rolled up again with the web.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: July 4, 1989
    Assignee: Leybold Aktiengesellschaft
    Inventors: Wolfgang Schwarz, Bernhard Herkert, Hans Kessler
  • Method for coating webs of material having an open structure in depth
    Patent number: 4826707
    Abstract: A method and apparatus for vacuum coating of materials having a three-dimensional surface structure is disclosed that provides cooling, to prevent heat destruction of those materials during vacuum coating. The web is moved back and forth across the coating area, between rolls. A cooling film is rolled onto each roll with the web. As the web is unrolled, the film is unrolled and recooled before being rolled up again with the web.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: May 2, 1989
    Assignee: Leybold Aktiengesellschaft
    Inventors: Wolfgang Schwarz, Bernhard Herkert, Hans Kessler