Patents by Inventor Akbar Kheirmand

Akbar Kheirmand 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).

  • Device for sensing of electric discharges in a test object
    Patent number: 5933012
    Abstract: A device for sensing electric discharges in a test object with at least two electric connection conductors comprises transducer equipment and evaluation equipment. The transducer equipment comprises at least one transducer for direction-sensitive sensing of current pulses through the connection conductors by sensing a magnetic field, generated by the current pulses, and the polarity thereof. The transducer delivers a transducer signal to the evaluation equipment in dependence on said current pulses and their direction. The evaluation equipment generates, in dependence on received transducer signals, an indicated signal indicating an electric discharge in the test object.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: August 3, 1999
    Assignee: ABB Research Ltd.
    Inventors: Tord Bengtsson, Lars-Gunnar Dahlberg, Thomas Eriksson, Akbar Kheirmand, Mats Leijon, Henry Siberg, Dick Rudolfsson, Dag Winkler