Patents by Inventor Willem Lodewijk VAN Hoorn

Willem Lodewijk VAN Hoorn 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).

  • High-pressure discharge lamp
    Patent number: 4117367
    Abstract: A high-pressure discharge lamp having at least one electrode fabricated by an isostatic compression process.
    Type: Grant
    Filed: July 29, 1975
    Date of Patent: September 26, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Jan Rudolf DE Bie, Tjepke Hendrik Ekkelboom, Johannes Jacobus Franciscus Geytenbeek, Willem Lodewijk VAN Hoorn, Otmar Schob