Patents by Inventor Neil C. Mattucci

Neil C. Mattucci 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).

  • Photograph system
    Patent number: 5705312
    Abstract: There is described a photographic system wherein development of an exposed photosensitive element is carried out in the presence of a quaternary pyridinium compound which has a fused 5 - to 12 - member saturated carbocyclic ring attached to the 2 and 3 positions of the pyridine ring.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: January 6, 1998
    Assignee: Polaroid Corporation
    Inventors: Donna J. Guarrera, Neil C. Mattucci, Avinash C. Mehta, Lloyd D. Taylor, John C. Warner
  • Color transfer photographic processes and products
    Patent number: 4496651
    Abstract: This invention relates to diffusion transfer processes and products wherein the transmission density of the pigmented processing composition layer is increased by employing an alkali earth metal salt to increase the light-absorbing ability of a carboxynaphthol phthalein optical filter agent within said processing composition layer. In another embodiment, a carboxyindole phthalein optical filter agent also is included in said processing composition layer, and a zinc or cadmium salt is employed to shift the spectral absorption of the carboxyindole phthalein into the green region of the visible spectrum. In a further embodiment, a calcium salt is employed in a viscous pigmented processing composition comprising a light-reflecting pigment, colloidal silica and a metal chelating agent, e.g., an alkylene polyamine polyacetic acid to stabilize the spreading characteristics of the composition.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: January 29, 1985
    Assignee: Polaroid Corporation
    Inventors: Leon D. Cerankowski, Gary S. LaPointe, Neil C. Mattucci
  • Color transfer photographic processes and products
    Patent number: 4456674
    Abstract: This invention relates to diffusion transfer processes and products wherein the transmission density of the pigmented processing composition layer is increased by employing an alkali earth metal salt to increase the light-absorbing ability of a carboxynaphthol phthalein optical filter agent within said processing composition layer. In another embodiment, a carboxyindole phthalein optical filter agent also is included in said processing composition layer, and a zinc or cadmium salt is employed to shift the spectral absorption of the carboxyindole phthalein into the green region of the visible spectrum. In a further embodiment, a calcium salt is employed in a viscous pigmented processing compositon comprising a light-reflecting pigment, colloidal silica and a metal chelating agent, e.g., an alkylene polyamine polyacetic acid to stabilize the spreading characteristics of the compositions.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: June 26, 1984
    Assignee: Polaroid Corporation
    Inventors: Leon D. Cerankowski, Gary S. LaPointe, Neil C. Mattucci
  • Diffusion transfer product and process
    Patent number: 4367277
    Abstract: Diffusion transfer films and processes are disclosed wherein the processing composition includes a light-reflecting pigment and an optical filter agent, and the image-receiving layer carries over it a layer of unhardened gelatin adapted to decolorize optical filter agent immediately adjacent the interface between said processing composition and said decolorizing layer.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: January 4, 1983
    Assignee: Polaroid Corporation
    Inventors: Charles K. Chiklis, Neil C. Mattucci