Patents by Inventor Jan G. J. Peelen

Jan G. J. Peelen 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).

  • Glass for a cone of a display tube, display tube envelope comprising a cone of such a glass and method of manufacturing a cone from such a glass
    Patent number: 5725627
    Abstract: The invention comprises a novel type of glass for a cone (3) of a display tube envelope (1), said glass being manufactured by recycling screen glass and cone glass of display tube envelopes. A mixture of screen and cone glasses is supplemented with other glass-forming components to form a novel glass composition which can be used in cone glass applications. The glass is characterized by a relatively high BaO and SrO content. The glass has an x-ray absorption .mu. of at least 65 cm.sup.-1 at 0.6 .ANG..
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: March 10, 1998
    Assignee: U. S. Philips Corporation
    Inventors: Andreas J. Piers, Jan G. J. Peelen
  • Glass for a cone of a display tube, display tube envelope comprising a cone of such a glass and method of manufacturing a cone from such a glass
    Patent number: 5599752
    Abstract: The invention comprises a novel type of glass for a cone (3) of a display tube envelope (1), said glass being manufactured by recycling screen glass and cone glass of display tube envelopes. A mixture of screen and cone glasses is supplemented with other glass-forming components to form a novel glass composition which can be used in cone glass applications. The glass is characterized by a relatively high BaO and SrO content. The glass has an x-ray absorption .mu. of at least 65 cm.sup.-1 at 0.6 .ANG..
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: February 4, 1997
    Assignee: U.S. Philips Corporation
    Inventors: Andreas J. Piers, Jan G. J. Peelen
  • 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
  • Method of manufacturing an optical fiber preform
    Patent number: 4793843
    Abstract: While collapsing the central duct in hollow glass optical fiber preforms, an etchant consisting of a mixture of oxygen and a fluorocarbon compound from the group C.sub.2 F.sub.6, C.sub.3 F.sub.8 and N-C.sub.4 F.sub.10 is passed through the duct. In particular, the etchant is passed through the duct only when the duct's diameter is 1 mm or smaller. The resulting solid preforms and optical fibers drawn therefrom do not have a central dip in the refractive index profile.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: December 27, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Rene A. M. Pluijms, Pieter van der Ree, Gerrit J. Koel, Jan G. J. Peelen
  • 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
  • Coating apparatus for manufacturing optical fibers
    Patent number: 4314834
    Abstract: Method of and apparatus for manufacturing optical fibers in which a preform is heated in a furnace which is provided with a graphite heating element and a fiber is drawn from the heated preform. The fiber is subsequently cooled, provided with a coating, and, after drying of the coating, the fiber is wound onto a reel.For applying a coating to the fiber, the fiber is passed through a nozzle which has a polygonal nozzle opening.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: February 9, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Johannes Feenstra, Marius A. F. Klop, Wilhelmus C. P. M. Meerman, Jan G. J. Peelen, Hermanus N. Tuin
  • Method of and apparatus for manufacturing optical fibres
    Patent number: 4309201
    Abstract: Method of and apparatus for manufacturing optical fibers in which a preform is heated in a furnace which is provided with a graphite heating element and a fiber is drawn from the heated preform. The fiber is subsequently cooled, provided with a coating, and, after drying of the coating, the fiber is wound onto a reel.During drawing of the fiber, the preform and fiber are flushed with a gas. According to the invention the gas with which the fiber is flushed is passed along a condensation element.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: January 5, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Marius A. F. Klop, Wilhelmus C. P. M. Meerman, Jan G. J. Peelen, Hermanus N. Tuin