Patents by Inventor Gerrit-Jan Korteling

Gerrit-Jan Korteling 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 manufacturing a bulb for a cathode-ray tube, and bulb obtained by means of this method
    Patent number: 4050601
    Abstract: An envelope for an oscilloscope tube is formed by simultaneously rotating and heating a glass tube and upsetting the heated tube, to form a cylindrical section having uniform thickness and varying diameter. The thus formed envelope portion is then pressed into a shape having a rectangular cross-section, without changing the circumference, in order to maintain the thickness of the envelope.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: September 27, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Johan J. H. Bogaard, Gerrit-Jan Korteling