Patents by Inventor Perry N. Law

Perry N. Law 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).

  • Method and apparatus for a transient-suppression network
    Patent number: 4630163
    Abstract: An electrical circuit and method for use in suppressing source and load-side transients appearing on a power-supply line. The circuit includes a high-speed clamping stage, a high-energy clamping stage, and a highly efficient LC filter for dissipating harmonic voltage and current caused by clamping the transient. A third clamping stage may be included so as to provide for common-mode suppression.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: December 16, 1986
    Assignee: EFI Corporation
    Inventors: Howard C. Cooper, Carl M. Rasmussen, Perry N. Law