Patents by Inventor Phillip D. Knight

Phillip 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).

  • Patent number: 6521400
    Abstract: A multilayer color reversal photographic film element is described containing at least two silver halide photographic emulsion layers and a compound of the formula F-1: wherein A, B, C, and D are independently substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic substituents, which may where structurally possible together form a ring or rings; where at least one of A, B, C, and D is of the formula F-2: wherein R1 and R2 are independently either hydrogen or substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic substituents, which may where structurally possible form a ring with other substituents; R3 is a substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic substituent which may where structurally possible form a ring with other substituents, L is a bivalent linking or timing group attached to the carbonyl moiety via a heteroatom, n varies from 0-2; and INH is a silver development inhibitor attached either t
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: February 18, 2003
    Assignee: Eastman Kodak Company
    Inventors: Thomas J. Dannhauser, Phillip D. Knight, Thomas R. Welter
  • Patent number: 5534401
    Abstract: There are described reversal photographic elements containing magenta dye-forming couplers that yield dye images that particularly lend themselves to retouching. The photographic element comprises a pyrazoloazole magenta dye forming coupler having a cleavable ballast group joined to the remainder of the molecule by one or two electrophilic cleavage groups which can be removed with a specialized processing composition after reversal processing.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: July 9, 1996
    Assignee: Eastman Kodak Company
    Inventors: J. R. Vargas, John W. Harder, Phillip D. Knight, Paul A. Burns, Lynda D. Weber
  • Patent number: 5310642
    Abstract: A silver halide photographic light-sensitive material for development in a development solution at a pH of at least 11.4 is disclosed. The material comprises a support having a silver halide emulsion layer comprising a compound capable of releasing a development inhibitor having a decomposition half-life in the range of above 4 to 225 hours at pH 10, said inhibitor after decomposition having substantially no photographic inhibitor properties, the compound having the formula:CAR--(TIME).sub.n --INH--L--Y (I).
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: May 10, 1994
    Assignee: Eastman Kodak Company
    Inventors: J. Ramon Vargas, Paul A. Burns, Phillip D. Knight
  • Patent number: 5296337
    Abstract: There are described a method for retouching photographic images, compositions adapted for such retouching, and photographic elements containing dye-forming couplers that yield dye images that particularly lend themselves to retouching by this method. The method comprises contacting a photographic element containing a dye image with a defined retouching composition to solubilize and remove selected areas or amounts of dye. The composition comprises an aqueous basic solution of a dinucleophile and a water-soluble organic co-solvent. The preferred photographic element for application of this retouching method comprises a dye image formed from a pyrazoloazole magenta dye forming coupler having a cleavable ballast group joined to the remainder of the molecule by one or two electrophilic cleavage groups. The retouching composition cleaves the ballast from the dye and solubilizes the dye, allowing it to be washed from the element.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: March 22, 1994
    Assignee: Eastman Kodak Company
    Inventors: J. Ramon Vargas, John W. Harder, Phillip D. Knight, Paul A. Burns, Lynda D. Weber
  • 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
  • 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