Patents by Inventor Craig Perman

Craig Perman 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).

  • Welded sample preparation articles and methods
    Publication number: 20050058576
    Abstract: Solid phase extraction articles, well-less filtration devices, and methods of manufacturing the articles and devices are disclosed. Methods of extracting analytes from samples using the articles and devices are also disclosed. The articles, devices and methods include a solid phase extraction medium (SPE medium) that incorporates thermoplastic material, e.g., in the form of thermoplastic particles enmeshed within a fibril matrix.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 17, 2005
    Inventors: Robert Pranis, Craig Perman
  • Supersensitization of silver halide emulsion
    Patent number: 4780404
    Abstract: 5-substituted-1,2,3,4-thiatriazoles have been found to be supersensitizers for silver halide photographic emulsions spectrally sensitized to the infrared.
    Type: Grant
    Filed: June 9, 1987
    Date of Patent: October 25, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Peter D. Sills, James B. Philip, Jr., Richard J. Loer, Craig Perman