Patents by Inventor Julian J. Hirshfeld

Julian J. Hirshfeld 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).

  • Method of dyeing using the combination of certain halogenated hydrocarbons and aromatic solvents in an aqueous dye admixture
    Patent number: 4131424
    Abstract: A method of dyeing synthetic fibers, especially polyester and acrylic using an aqueous dyeing admixture containing a halogenated hydrocarbon solvent, an aromatic carrier, an emulsifier and a dyestuff.
    Type: Grant
    Filed: July 21, 1977
    Date of Patent: December 26, 1978
    Assignee: Milliken Research Corporation
    Inventors: George Cocoros, Thomas V. Chambers, Julian J. Hirshfeld
  • Condensation dyeing
    Patent number: 4121899
    Abstract: Fibers are dyed by applying an aqueous dyeing formulation to the fibers, cooling them and condensing halogenated hydrocarbon vapors upon the cool, wet fibers. Residual halogenated hydrocarbon is removed by exposing the fibers to heat.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: October 24, 1978
    Assignee: Milliken Research Corporation
    Inventors: Thomas Van Chambers, Julian J. Hirshfeld