Patents by Inventor Michael D. Warfield

Michael D. Warfield 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).

  • Electron-beam probing of photodiodes
    Patent number: 4730158
    Abstract: Method and apparatus for testing photodiode arrays using an electron beam. The diodes are charged at successive intervals over the RC time constant curve to develop successively increasing voltages at the ends of succeeding time intervals. Diode voltage and current are measured at the end of each interval and the resulting data are used to develop a current-voltage characteristic for each diode.
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: March 8, 1988
    Assignee: Santa Barbara Research Center
    Inventors: Ichiro Kasai, Roderic L. Osgood, Charley B. Burgett, Richard J. Joyce, Michael D. Warfield