Patents by Inventor Chih-Ping Liang

Chih-Ping Liang 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: 6011398
    Abstract: A leakage tester includes multiple circuits capable of simulating the impedance of the human body to electrical current under a variety of conditions, and in which the multiple circuits can be selected using a single menu-based operator interface for testing both normal-line and single-fault conditions such as open-neutral, reversed-line, and open-ground conditions, as well as for performing additional types of safety compliance tests including dielectric withstand, insulation resistance, and ground bond or continuity tests, in any sequence.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: January 4, 2000
    Assignee: Associated Research, Inc.
    Inventors: Roger A. Bald, Pin-Yi Chen, Chih Ping Liang