Patents by Inventor James R. Shirck

James R. Shirck 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).

  • ADHESIVE-COATED BACKING FOR FLEXIBLE CIRCUIT
    Publication number: 20090068458
    Abstract: The invention relates to adhesive coated backings used during fabrication of flexible circuits. The adhesive coatings exhibit high initial adhesion and a reduced level of adhesion after exposure to suitable radiation.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 12, 2009
    Inventors: Rui Yang, Jianhui Xia, James R. Shirck
  • Flexible circuits and method of making same
    Patent number: 7364666
    Abstract: Disclosed is a method for making flexible circuits in which portions of a tie layer are removed by etching the underlying polymer. Also disclosed are flexible circuits made by this method.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: April 29, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Sridhar V. Dasaratha, James S. McHattie, James R. Shirck, Hideo Yamazaki, Yuji Hiroshige, Makoto Sekiguchi
  • Layered photoconductive element
    Patent number: 4513073
    Abstract: The present invention relates to a photoconductive element comprising a photoconductive layer and one or more blocking layers adjacent thereto and having space charge layers interposed between the photoconductive layer and the blocking layers to increase the voltage acceptance potential of the photoconductive element.
    Type: Grant
    Filed: August 18, 1983
    Date of Patent: April 23, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Frank R. Jeffrey, III, James R. Shirck