Patents by Inventor Aart A. Van Der Giessen

Aart A. Van Der Giessen 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 and device for drawing an optical fiber from a solid preform consisting substantially of SiO.sub.2 and doped SiO.sub.2
    Patent number: 4673427
    Abstract: Optical fibres are drawn from a solid preform which consists substantially of SiO.sub.2 and doped SiO.sub.2. After leaving the heating zone, the fiber is guided through a space having a laminar gas flow to restrict the temperature drop across the fiber so that no extra stresses are incorporated in the fiber upon cooling. A device for performing this method comprises a quartz pipe through which the fiber is guided and in which a laminar gas flow is maintained.
    Type: Grant
    Filed: September 28, 1983
    Date of Patent: June 16, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Aart A. Van Der Giessen, Victor A. Van Der Hulst, Petrus J. Janssen