Patents by Inventor Walter Putzer

Walter Putzer 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).

  • Patent number: 3980957
    Abstract: A television tuner features a switching voltage generator that resets the voltage across the varicap tuning diodes to about zero voltage when a new tuning range is switched on. This allows the full steepness of the capacitance-voltage characteristics of the diodes to be used in each range. This in turn allows more ranges to be tuned and reduces the effects of stray capacitances.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: September 14, 1976
    Assignee: U.S. Philips Corporation
    Inventor: Walter Putzer