Patents by Inventor Steven W. Cooper

Steven W. Cooper 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).

  • Electronic switch controlled by plural inputs
    Patent number: 5350957
    Abstract: A switching circuit (34) is provided having first and second transistors (36, 38). A first control voltage V.sub.C1, is applied to the gate (42) of the first transistor (36). A second control voltage, V.sub.C2, is applied to the gate (50) of the second transistor (38). The transistors (36, 38) switch to generate the output signal, V.sub.out, in response to the difference between the first and second control voltages.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: September 27, 1994
    Assignee: Texas Instrument Incorporated
    Inventors: Steven W. Cooper, George A. Truitt
  • Detection of HCG with solid phase support having avidin coating
    Patent number: 4496654
    Abstract: Human chorionic gonadotropin (HCG) is detected by enzyme immunoassay by bonding biotinylated antibody to an avidin coupled paper disc, reacting the antibody on the disc with the solution suspected of containing HCG, and determining the amount of HCG on the disc by enzymatic assay detection techniques.
    Type: Grant
    Filed: April 8, 1983
    Date of Patent: January 29, 1985
    Assignee: Quidel
    Inventors: David H. Katz, Steven W. Cooper, Theodore T. Lee, Shung-Ho Chang