Patents by Inventor David Flugan

David Flugan 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).

  • System for fast piezoelectric-resonator parameter measurements
    Patent number: 6208153
    Abstract: Method and apparatus are described for speeding parameter measurements of piezoelectric-resonators. A large driving voltage is applied to the resonator until the resonator current reaches its desired steady-state value. Then the driving voltage is reduced to a level which will maintain that desired current level. This procedure allows the resonator to reach its steady state conditions faster than if a constant drive voltage were used.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: March 27, 2001
    Assignee: Transat Corporation
    Inventor: David Flugan
  • Ballast circuit having electromagnetic interference (EMI) reducing means for an improved lighting unit
    Patent number: 4567404
    Abstract: Various circuit embodiments for reducing the electromagnetic interference (EMI) typically created by a ballast circuit for an improved lighting unit is disclosed. The EMI reducing circuit adapts the operation of the source of the EMI of the ballast circuit to the conductive states of the rectifier means of the improved lighting unit.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: January 28, 1986
    Assignee: General Electric Company
    Inventor: David Flugan