Patents by Inventor Jack E. Reece

Jack E. Reece 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).

  • Spectral sensitization of photothermographic elements
    Patent number: 4461828
    Abstract: A narrow range of dinuclear spectral sensitizing dyes can be used in photothermographic silver halide emulsions without adversely affecting fog and speed levels with concentration variations.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: July 24, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kenneth W. Metz, Vincent K. Rasbury, Jack E. Reece
  • Stabilization of latent images in photothermographic elements
    Patent number: 4450229
    Abstract: The addition of a class of compounds to a photothermographic emulsion reduces latent image fade.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: May 22, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jack E. Reece
  • Stabilization of latent images in photothermographic elements
    Patent number: 4352872
    Abstract: Photothermographic emulsions may be stabilized against latent image fade and/or may have their speed increased by the addition of diazepines and fused aromatic diazepines.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: October 5, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jack E. Reece
  • Dry silver photo-sensitive compositions
    Patent number: 4197131
    Abstract: Dry silver photo-sensitive compositions comprising an intimate mixture of a substantially light-insensitive silver compound which upon reduction gives a visible change and sufficient of a silver halide to catalyse said reduction to give a visible change in those areas where the silver halide has been exposed to light and when the mixture is heated in the presence of a reducing agent, and as a yellow acutance dye a 1-alkyl-4-nitro-methylene-quinolane, the alkyl substituent containing 1 to 4 carbon atoms.
    Type: Grant
    Filed: November 29, 1978
    Date of Patent: April 8, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Bernard D. Lea, Jack E. Reece
  • Acutance agents for use in thermally-developable photosensitive compositions
    Patent number: 4088497
    Abstract: Certain members of the class of odd-numbered methine arylidene dye bases are found to be of use in thermally-developable photosensitive compositions and thermally-developable photosensitive elements containing such agents. These compounds are acutance agents which are relatively stable against photo-bleaching but undergo thermochemical bleaching on heating in silver salt-containing thermally-developable photosensitive compositions.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: May 9, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Harvey A. Brown, Jack E. Reece
  • Sensitizing a thermographic silver halide photographic material with monomeric amide
    Patent number: 3980482
    Abstract: Photosensitive heat-developable dry silver sheet materials, containing organic silver salt and reducing agent and in which a minor portion of the silver salt has been halidized, are given an orders-of-magnitude increase in photographic speed by incorporating an organic sensitizing amide prior to halidizing.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: September 14, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jack E. Reece
  • Method for preparing 4-carboxythiazolidine-2-thione
    Patent number: 3960881
    Abstract: Certain thiazolidine- and thiazine-2-thione compounds, including 4-carboxythiazolidine-2-thione and 3,4-tetramethylene-4H,5,6-dihydro-1,3-thiazine-2-thione, and methods for preparing same are disclosed.
    Type: Grant
    Filed: February 12, 1974
    Date of Patent: June 1, 1976
    Assignee: Phillips Petroleum Company
    Inventors: Jack E. Reece, George B. Fozzard