Patents by Inventor Peter Wilhelm

Peter Wilhelm 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).

  • Warm light reflector
    Patent number: 4199218
    Abstract: The invention relates to a "warm light reflector", which reflects infrared radiation and absorbs visible light. More specifically, a reflecting layer of, for example, gold carries a double layer of PbS, which is constructed of one smooth layer and of one fine-flocked layer of agglomerates.The disclosed warm light reflector finds particular application in infrared measurement technology, preferably in a passive infrared alarm generator.
    Type: Grant
    Filed: July 13, 1978
    Date of Patent: April 22, 1980
    Assignee: Heimann GmbH
    Inventors: Peter-Wilhelm Steinhage, Claus Kunze
  • Wide-band transistor amplifier
    Patent number: 3986133
    Abstract: In a wide-band transistor amplifier having a cascade arrangement of several of a special type of gain cell a low dissipation, a relatively small number of coupling and decoupling elements and a high value of gain-bandwidth product is obtained by interconnecting the gain cells in a special way. This wide-band amplifier is quite suited for monolithic integration and for construction as a distributed equalizing amplifier.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: October 12, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Engel Roza, Peter Wilhelm Millenaar
  • Device for providing an early detection of aerosol products of combustion of a polyvinyl chloride substance
    Patent number: 3973192
    Abstract: A device for providing an early detection of aerosol products of combustion originating at least partly from a polyvinyl chloride substance. It comprises an electric resistance body of magnesium having a very small thickness and being arranged to be exposed to said aerosol products of combustion, an electric measuring circuit connected to the resistance body, and an indicating means arranged to generate an indicating signal in dependence on that the resistance of the resistance body exceeds a definite level.
    Type: Grant
    Filed: November 5, 1974
    Date of Patent: August 3, 1976
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Eduard Wilhelm Leonhard Justi, Henning Ewe, Peter Wilhelm Reinhard Brennecke