Patents by Inventor Hendrik Venhuizen

Hendrik Venhuizen 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 manufacturing optical fibers
    Patent number: 4966614
    Abstract: In the P.C.V.D. process, in principal the quartz tube need not be rotated during the deposition of the glass layers. However, it has been found in practice that an improvement in the quality of the glass fibers can be obtained if the quartz tube is rotated regularly over an angle of 360.degree./n. n is preferably equal to an integer from 2 to 12.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: October 30, 1990
    Assignee: U.S. Philips Corp.
    Inventors: Andreas N. Van Geelen, Jan G. J. Peelen, Hendrik Venhuizen
  • Device for manufacturing optical fiber preforms
    Patent number: 4770682
    Abstract: In the P.C.V.D. process in principal the quartz tube need not be rotated during the deposition of the glass layers. However it has been found in practice that an improvement in the quality of the glass fibers can be obtained if the quartz tube is rotated regularly over an angle of 360.degree./n. n is preferably equal to an integer from 2 to 12.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: September 13, 1988
    Assignee: U.S. Philips Corp.
    Inventors: Andreas N. Van Geelen, Jan G. J. Peelen, Hendrik Venhuizen