Patents by Inventor Donald DeRussy

Donald DeRussy 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).

  • Mono-and bis-hydrazone pigments
    Publication number: 20060009626
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Application
    Filed: August 23, 2005
    Publication date: January 12, 2006
    Inventors: Terence Chamberlain, Norman Smith, Donald DeRussy
  • Mono- and bis-hydrazone pigments
    Publication number: 20050288496
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Application
    Filed: August 23, 2005
    Publication date: December 29, 2005
    Inventors: Terence Chamberlain, Norman Smith, Donald DeRussy
  • Mono- and bis-hydrazone pigments
    Publication number: 20050288494
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Application
    Filed: August 23, 2005
    Publication date: December 29, 2005
    Inventors: Terence Chamberlain, Norman Smith, Donald DeRussy
  • Mono- and bis-hydrazone pigments
    Publication number: 20050288495
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Application
    Filed: August 23, 2005
    Publication date: December 29, 2005
    Inventors: Terence Chamberlain, Norman Smith, Donald DeRussy
  • Perylene pigment composition and process therefor
    Publication number: 20050188895
    Abstract: A process for the manufacture of a pigmentary form of perylene-3,4,9,10-tetracarboxylic acid N,N?-bis-methylimide having a transparent clean yellowish shade, comprises comminution of a mixture comprising perylene-3,4,9,10-tetracarboxylic acid N,N?-bis-methylimide produced by methylation of perylenetetracarboxylic imide with an alkylating agent and perylene-3,4,9,10-tetracarboxylic acid N,N?-bis-methylimide produced by the condensation of perylenetetracarboxylic anhydride with methylamine, in the presence of dimerized rosin. The pigments obtainable are notable for their outstanding coloristic and rheological properties and are suitable for use in a variety of applications.
    Type: Application
    Filed: February 26, 2004
    Publication date: September 1, 2005
    Inventors: Terence Chamberlain, Donald DeRussy, Michael Lemmons