Patents by Inventor Herman W. Pietersma

Herman W. Pietersma 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).

  • X-ray rotary anode
    Patent number: 5099506
    Abstract: An X-ray rotary anode (1) comprising a graphite carrier body (3) and a tungsten target layer (11) can withstand a high-temperature load when an intermediate layer is provided which is composed of a layer of silicon carbide (7) and a layer of titanium nitride (9).
    Type: Grant
    Filed: January 4, 1991
    Date of Patent: March 24, 1992
    Assignee: U.S. Philips Corporation
    Inventors: Gerhard J. Van Der Kooi, Bernard J. P. Van Rheenen, Herman W. Pietersma