Patents by Inventor D. Knight

D. Knight 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).

  • Silver salts of 1,2,4-mercaptotriazole derivatives
    Patent number: 4128557
    Abstract: A photothermographic material comprising in reactive association (a) photosensitive silver halide, (b) an image-forming combination comprising (i) a silver salt of certain 1,2,4-mercaptotriazole derivatives with (ii) a silver halide developing agent, and (c) a polymeric binder, provides developed images without the need for processing solutions or baths. An image can be developed in this material by merely heating the material to moderately elevated temperatures. The silver salts of certain 3-amino-1,2,4-mercaptotriazole derivatives are particularly preferred compounds. Other addenda employed in heat developable photothermographic materials, such as sensitizing dyes, can be employed with the photothermographic materials described.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: December 5, 1978
    Assignee: Eastman Kodak Company
    Inventors: Phillip D. Knight, Richard A. DEMauriac, Patricia A. Graham
  • Heat developable imaging materials and process
    Patent number: 4123274
    Abstract: A photothermographic material comprising in reactive association (a) photosensitive silver halide, (b) an image-forming combination comprising (i) a silver salt of certain 1,2,4-mercaptotriazole derivatives with (ii) a silver halide developing agent, and (c) a polymeric binder, provides developed images without the need for processing solutions or baths. An image can be developed in this material by merely heating the material to moderately elevated temperatures. The silver salts of certain 3-amino-1,2,4-mercaptotriazole derivatives are particularly preferred compounds. Other addenda employed in heat developable photothermographic materials, such as sensitizing dyes, can be employed with the photothermographic materials described.
    Type: Grant
    Filed: March 16, 1977
    Date of Patent: October 31, 1978
    Assignee: Eastman Kodak Company
    Inventors: Phillip D. Knight, Richard A. DEMauriac, Patricia A. Graham