Patents by Inventor Josephus J. Timmermans

Josephus J. Timmermans 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).

  • Electric lamp with metal shell
    Patent number: 6359386
    Abstract: The electric lamp comprises a lamp vessel (1) in which an electric element (2) is arranged. The electric element (2) is connected to feedthroughs (3, 4) that extend through the wall of the lamp vessel (1). The respective feedthroughs (3, 4) comprise a metal shell (7) and an internal current conductor (13) connected thereto. The metal shell (7), which has no knife edge, clamps around the neck-shaped end portion (5, 6) of the lamp vessel (1), hence realizing the gastightness of the feedthrough.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: March 19, 2002
    Assignee: U.S. Philips Corporation
    Inventors: Gijsbert L. Von Morgen, Gerardus H. A. M. Van Der Steen, Josephus J. Timmermans
  • Method of manufacturing quartz glass for a lamp vessel
    Patent number: 5851253
    Abstract: The electric incandescent lamp has a quartz glass lamp vessel (1) or envelope (4') around the lamp vessel, which has a red coloured dope in the area at the side of the incandescent body (3). The quartz glass with red dope contains samarium.sup.II oxide, aluminium oxide, titanium dioxide, and silicon dioxide, the analysis of the glass in its oxidized form being Sm.sub.2 O.sub.3 1 to 3% by weight, Al.sub.2 O.sub.3 up to 3% by weight, TiO.sub.2, rest SiO.sub.2, the molar ratio Al/Sm being at least about 2 and the molar ratio Sm/Ti being from 2 to 8.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: December 22, 1998
    Assignee: U.S. Philips Corporation
    Inventors: Robert J. Pet, Josephus J. Timmermans
  • Electric lamp
    Patent number: 5541471
    Abstract: An electric lamp has a light source which has an envelope of doped quartz glass. The quartz glass including silicon, cerium, titanium, europium and aluminium in oxidic form. Cerium accounts for 0.1-0.2, titanium for 0.01-0.04, europium for 0.03-0.2 and aluminium for at most 0.8 at % of the cationogenous elements. The aluminium/europium atomic ratio lies in the region from 3 to 8. The doped quartz glass is at least substantially transparent to visible radiation and at least substantially impervious to UV radiation.
    Type: Grant
    Filed: December 12, 1994
    Date of Patent: July 30, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Joannes Terheijden, Josephus J. Timmermans