Patents by Inventor Allan M. Feldman

Allan M. Feldman 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).

  • Carbodiimide oligomers of tertiary aliphatic isocyanates
    Patent number: 4419294
    Abstract: Tertiary aliphatic diisocyanate carbodiimide oligomers useful in the formulation of light stable urethane spray coatings prepared by catalytic conversion of diisocyanate monomers such as tetramethylxylylene diisocyanates and dipentene diisocyanate.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: December 6, 1983
    Assignee: American Cyanamid Company
    Inventors: Allan M. Feldman, Peter S. Forgione
  • Stable isocyanic acid compositions
    Patent number: 4418047
    Abstract: Stable isocyanic acid compositions containing isocyanic acid in an organic solvent therefor, having a small amount of a labile halide compound, such as carbamoyl chloride.
    Type: Grant
    Filed: September 23, 1981
    Date of Patent: November 29, 1983
    Assignee: American Cyanamid Company
    Inventors: Steven L. Trenbeath, Robert W. Novak, Allan M. Feldman
  • Manufacture of isocyanates
    Patent number: 4377530
    Abstract: A process for producing aromatic mono- and polyisocyanates by the addition reaction of isocyanic acid with vinyl aromatics is disclosed. The process is characterized by the slow addition of the olefin to a reaction mass of solvent and isocyanic acid to maintain the isocyanic acid in high excess to unreacted olefin.
    Type: Grant
    Filed: March 5, 1982
    Date of Patent: March 22, 1983
    Assignee: American Cyanamid Company
    Inventors: Steven L. Trenbeath, Allan M. Feldman, Laurence J. Nummy
  • Method for drying isocyanic acid
    Patent number: 4374107
    Abstract: Removing water from wet isocyanic acid in organic solution of said isocyanic acid by addition hereto of a hydrogen halide or a compound which forms hydrogen halide in said solution in amount sufficient to provide a molar excess of hydrogen halide in said solution relative to the water, and ammonia if any, present in said solution.
    Type: Grant
    Filed: September 23, 1981
    Date of Patent: February 15, 1983
    Assignee: American Cyanamid Company
    Inventors: Steven L. Trenbeath, Robert W. Novak, Allan M. Feldman