Patents by Inventor Dan Hilberman

Dan Hilberman 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).

  • Single amplifier frequency dependent negative resistor
    Patent number: 4132966
    Abstract: A single amplifier is arranged in an immittance network for simulating a pure frequency dependent negative resistor (FDNR).
    Type: Grant
    Filed: August 18, 1977
    Date of Patent: January 2, 1979
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Dan Hilberman