Patents by Inventor James B. Philip

James B. Philip 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).

  • 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
  • Photographic elements sensitive to near infrared
    Patent number: 4711838
    Abstract: Photographic elements which may be imaged by laser scanners emitting in the near infrared without the formation of interference fringes comprising a support bearing one or more layers of a silver halide emulsion having grains of an average diameter of no more than 0.4 micron, the element including one or more of:(i) a topcoat layer which is an outermost layer on the same side of the support as the photosensitive emulsion which topcoat layer is a diffuse transmitting layer with respect to near infrared radiation,(ii) a backing layer which is an outermost layer on the side of the support remote from the photosensitive emulsion which backing layer is a diffuse reflecting layer or absorbing layer with respect to near infrared radiation,(iii) a subbing layer which is positioned between the support and the photosensitive emulsion which subbing layer is a diffuse transmitting or absorbing layer with respect to near infrared radiation.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: December 8, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Nicholas E. Grzeskowiak, James B. Philip, Jr.
  • Supersensitization of silver halide emulsions
    Patent number: 4603104
    Abstract: Combinations of supersensitizers for photographic emulsions have been found which provide increased speed.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: July 29, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: James B. Philip, Jr.
  • Supersensitization of silver halide emulsions
    Patent number: 4578347
    Abstract: The addition of water-soluble triaryl compounds selected from the group consisting of phosphines, amines, arsines, bismuthines and stibylidynes provides sensitizing effects and, when added to spectrally sensitized emulsions, provides a supersensitizing effect. The activity of these compounds is additive with other supersensitizers.
    Type: Grant
    Filed: August 29, 1984
    Date of Patent: March 25, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: James B. Philip, Jr.