Patents by Inventor Petrus W. H. M. Crooymans

Petrus W. H. M. Crooymans 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).

  • Magnetron cathode sputtering system
    Patent number: 4392939
    Abstract: In a magnetron cathode sputtering system the target (plate of material to be sputtered) 8 is held against a backing plate 13 by a vacuum, enabling the backing plate 13 to be reused. By providing the backing plate with a layer of soldering material which adheres to the backing plate 13, but does not adhere to the target 8, heat transfer between the two plates is improved.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: July 12, 1983
    Assignee: U.S. Philips Corporation
    Inventors: Jacobus E. Crombeen, Petrus W. H. M. Crooymans, Jan Visser