Patents by Inventor Donald T. DeRussy

Donald T. 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
    Patent number: 7193067
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: March 20, 2007
    Inventors: Terence Chamberlain, Norman W. Smith, Donald T. DeRussy
  • Mono- and bis-hydrazone pigments
    Patent number: 7148335
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: December 12, 2006
    Assignee: Sun Chemical Corporation
    Inventors: Terence Chamberlain, Norman W. Smith, Donald T. DeRussy
  • Mono- and bis-hydrazone pigments
    Patent number: 7132518
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: November 7, 2006
    Assignee: Sun Chemical Corporation
    Inventors: Terence Chamberlain, Norman W. Smith, Donald T. DeRussy
  • Mono- and bis-hydrazone pigments
    Patent number: 7105646
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: September 12, 2006
    Assignee: Sun Chemical Corporation
    Inventors: Terence Chamberlain, Norman W. Smith, Donald T. DeRussy
  • Mono-and bis-hydrazone pigments
    Patent number: 6965019
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: November 15, 2005
    Assignee: Sun Chemical Corporation
    Inventors: Terence Chamberlain, Norman W. Smith, Donald T. DeRussy
  • Mono-and bis-hydrazone pigments
    Publication number: 20040039182
    Abstract: Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
    Type: Application
    Filed: January 6, 2003
    Publication date: February 26, 2004
    Inventors: Terence Chamberlain, Norman W. Smith, Donald T. DeRussy
  • Process for the manufacture of 1,8-naphthalimide
    Patent number: 6372910
    Abstract: A process for preparing 1,8-naphthalimide by reacting 1,8-naphthalic anhydride with ammonia in an aqueous solution under atmospheric pressure at 60 to 100° C.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: April 16, 2002
    Assignee: Sun Chemical Corporation
    Inventors: Terrence R. Chamberlain, Donald T. DeRussy
  • Manufacture of 2,6-hydroxynaphthoic acid
    Patent number: 5075496
    Abstract: 2,6-hydroxynaphthoic acid is made by reacting 2-naphthol with cesium or rubidium hydroxide to obtain cesium or rubidium naphthoxide, and reacting the naphthoxide with CO.sub.2 in the presence of cesium or rubidium carbonate.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: December 24, 1991
    Assignee: Aristech Chemical Corporation
    Inventors: Joseph Pugach, Donald T. Derussy