Patents Represented by Attorney T. R. Savitsky

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  • Polymer blends for aqueous dispersions having improved freeze-thaw stability
    Patent number: 5268412
    Abstract: Disclosed are polymer blends of polyesters or polyesteramides and a polymer containing an acrylamide sulfonate monomer. The blends are preferably prepared by polymerizing monomers in the presence of the polyester or polyesteramide. The blends impart superior freeze-thaw stability to aqueous compositions such as inks.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: December 7, 1993
    Assignee: Eastman Kodak Company
    Inventor: Peter W. Raynolds
  • Coating compositions for slow release fertilizer formulations
    Patent number: 5264019
    Abstract: Coating compositions containing medium density, low molecular weight polyethylene wax and a tackifying resin. The coating composition coats a fertilizer core such as urea to result in an improved fertilizer release profile.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: November 23, 1993
    Assignee: Eastman Kodak Company
    Inventors: John R. Gossett, Jr., Shane K. Kirk, E. Phillip Smith
  • Process for treating pigments
    Patent number: 5260052
    Abstract: The present invention concerns a process for preparing a treated blend which contains pigment material dispersed in a continuous phase of water and a polyester material. The invention also concerns compositions prepared from such process. The polyester material of the treated blend is linear, contains a sulfomonomer, and has an average particle size of less than 1 .mu.m.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: November 9, 1993
    Assignee: Eastman Kodak Company
    Inventors: Kimberly T. Peters, Stephen H. W. Wu
  • Trisubstituted piperazin-2,5-diones
    Patent number: 5214145
    Abstract: Disclosed is a process for preparation of an amino acid, such as phenylalanine, with a high degree of optical purity. The process makes use of the same amino acid as a chiral template.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: May 25, 1993
    Assignee: Eastman Kodak Company
    Inventors: John C. Hubbs, Charles H. Foster