Patents by Inventor Jos Koenings

Jos Koenings 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 producing internally coated glass tubes for the drawing of fiber-optic light conductors
    Patent number: 4145458
    Abstract: The change in the refractive index across the radius which is important for self-focussing fibre optic light conductors is obtained because in the plasma-activated CVD-method the oxygen content of the gas mixture and/or the temperature of the tube wall is continuously reduced during the coating procedure.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: March 20, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Jos Koenings, Dieter Kuppers