Patents by Inventor Wolfgang Thouret

Wolfgang Thouret 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).

  • Incandescent light source with transparent heat mirror
    Patent number: 4160929
    Abstract: An incandescent lamp having a transparent heat mirror placed on the lamp envelope which transmits a substantial portion of the energy in the visible range produced by the lamp filament and which reflects back to the filament at least about 80%-85% of the infrared energy that the filament produces. In the preferred embodiment the transparent heat mirror is formed by a layered coating of TiO.sub.2 /Ag/TiO.sub.2 optimized for the operating temperature range of the filament. The filament is constructed to optically conform to the shape of the lamp envelope.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: July 10, 1979
    Assignee: Duro-Test Corporation
    Inventors: Luke Thorington, Peter Walsh, Ronald Koo, Wolfgang Thouret