Patents by Inventor Andre C Perras

Andre C Perras 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).

  • High current precision resistance measurement system
    Patent number: 8106669
    Abstract: A resistance testing apparatus makes use of a modular design for cascaded, parallel, bipolar current sources to obviate the need for electromechanical or pneumatic switching systems.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: January 31, 2012
    Assignee: Guildline Instruments Limited
    Inventors: Andre C Perras, Mark Evans