Patents by Inventor Cornelis VAN Osenbruggen

Cornelis VAN Osenbruggen 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).

  • Method of finishing a workpiece of a non-conducting material, particularly diamond, by means of spark erosion
    Patent number: 4013863
    Abstract: Spark erosion is applied to a non-conducting workpiece while employing a dielectric liquid comprising an emulsion of an aqueous solution of an electrolyte in an organic liquid and a surfactant.
    Type: Grant
    Filed: November 3, 1975
    Date of Patent: March 22, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Cornelis van Osenbruggen, Johannes VAN Ruler, Theodorus Maria Berendina Schoenmakers
  • Electrode for electrochemical machining
    Patent number: 3972797
    Abstract: Electrode for electrochemically machining electrically conducting workpieces, in particular machining them by removal of material, which electrode is locally coated with a screening layer consisting of a polycristalline semiconductor material, which layer preferably comprises two component layers of p and n-conductivity type respectively.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: August 3, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Siegfried Hendrik Hagen, Cornelis VAN Osenbruggen, Herman Anton, Joseph Reemers, Gerrit Verspui