Patents by Inventor William F. Buchman, Jr.

William F. Buchman, Jr. 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).

  • Cadmium-free amber automotive lamp
    Patent number: 6469443
    Abstract: An automotive lamp including a sealed envelope having a filament or other light emitting element contained therein, with the envelope being formed from a barium-silicate based glass that is essentially free of cadmium and that includes barium oxide in the range of 2.15%-2.25% by weight, strontium oxide in the range of 5.58%-5.82% by weight, potassium oxide in the range of 8.9%-9.3% by weight, and molybdenum oxide in the range of 0.068%-0.072% by weight. Specific amounts of other constituent components of the glass are also disclosed. The resulting lamp provides an amber color that meets applicable CIE chromaticity requirements for automotive lamps and the glass exhibits physical characteristics that are closely matched to that of lime glass, making it suitable for standard lamp manufacturing processes.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: October 22, 2002
    Assignee: Federal-Mogul World-Wide, Inc.
    Inventors: Johnny D. Bryant, William F. Buchman, Jr.