Patents by Inventor Jerome L. Reid

Jerome L. Reid 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).

  • Photochromic polymer membrane
    Patent number: 5256337
    Abstract: A photochromic material adapted for coating light transmissive materials. The photochromic material contains photosensitive silver halide crystals having dimensions in the range of approximately 50 Angstroms to 800 Angstroms. The silver halide crystals are surface doped with copper ions and another sensitizer selected from mild reducing agents, thioethers, or sulfur-bearing ions and are treated with an agent to accelerate the forward reaction and control the reverse reaction. The accelerants are ions selected from the group consisting of cobalt, chromium, manganese, magnesium, and rare earth metals such as cerium, samarium and europium. The agent for controlling the reverse reaction is one that confers electrical conductivity on the material and while to this end glycerol containing a high concentration of metal ions, methane sulfonic acid and benzyltrimethyl ammonium chloride are useful, the preferred agent is phosphoric acid.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: October 26, 1993
    Inventors: Jerome L. Reid, Pauline Do
  • Photochromic emulsion
    Patent number: 5073303
    Abstract: A photochromic material adapted for coating light transmissive materials. The photochromic material contains photosensitive silver halide crystals having dimensions in the range of approximately 50 Angstroms to 800 Angstroms. The silver halide crystals are surface doped with copper ions and another sensitizer selected from mild reducing agents or sulfur-bearing ions. The crystals are dispersed in a protective polymer that does not irreversibly bind halogen.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: December 17, 1991
    Assignee: BSG, Inc.
    Inventor: Jerome L. Reid
  • Photochromic polymeric membrane
    Patent number: 5015416
    Abstract: A photochromic material adapted for coating light transmissive materials. The photochromic material contains photosensitive silver halide crystals having dimensions in the range of approximately 50 Angstroms to 800 Angstroms. The silver halide crystals are surface doped with copper ions and another sensitizer selected from mild reducing agents or sulfur-bearing ions. The crystals are dispersed in a protective polymer that does not irreversibly bind halogen.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: May 14, 1991
    Assignee: Nelson Wasserman
    Inventor: Jerome L. Reid
  • Photographic uses of polyvinyl-phenylmercapto-tetrazoles
    Patent number: 4134768
    Abstract: Polymeric derivatives of tetrazole-5-thiols are useful in conjunction with photosensitive silver halide elements as interlayers to provide interimage control, as dispersants for dye image-forming materials or as silver scavengers.
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: January 16, 1979
    Assignee: Polaroid Corporation
    Inventors: J. Michael Grasshoff, Jerome L. Reid
  • Novel polymeric derivatives of tetrazole-5-thiols and their metal and ammonium salts
    Patent number: 3936401
    Abstract: Novel polymeric derivatives of tetrazole-5-thiols and their metal and ammonium salts, and the preparation of such compounds which are useful as gelatin thickeners or in their production, are disclosed.
    Type: Grant
    Filed: November 5, 1974
    Date of Patent: February 3, 1976
    Assignee: Polaroid Corporation
    Inventors: J. Michael Grasshoff, Jerome L. Reid