Patents by Inventor Ian Cheetham

Ian Cheetham 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).

  • Coloration of polyesters
    Patent number: 4001169
    Abstract: Process for mass coloring synthetic linear polyesters which comprises incorporating into the preformed polyester one or more dyestuffs of the formulae:- ##STR1## wherein R is a group of the formula ##STR2## and X is a lower alkoxy, substituted lower alkoxy, lower alkylamino or acylamino radical which is free from hydroxy or carboxylic acid groups.
    Type: Grant
    Filed: February 26, 1974
    Date of Patent: January 4, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: Ian Cheetham, Kenneth Dunkerley, Colin William Greenhaigh, James Albert Moyse, David Francis Newton
  • Dyeing process
    Patent number: 3953162
    Abstract: Dyeing nylon by applying sulphonated or unsulphonated dyestuffs containing cyclic anhydride groups, anhydride forming dicarboxylic acid groups or half-esters or half-amides thereof, as free acids or as salts with ammonia or volatile amines, and heating the fibre until dyestuff fixation takes place.
    Type: Grant
    Filed: March 21, 1974
    Date of Patent: April 27, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Colin William Greenhalgh, David Francis Newton, Dennis Eckersley, Ian Cheetham, Duncan Adrian Sidney Phillips, Kenneth Dunkerley, Gerald Williams, Vibhas Chokshi
  • Dyeing process
    Patent number: 3934972
    Abstract: Dyeing cellulose or cellulose/polyester blends by applying unsulphonated dyestuffs containing cyclic anhydride groups, anhydride-forming dicarboxylic acid groups or half-esters or half-amides thereof, as free acids or as salts with ammonia or volatile amines, and heating the fibre until dyestuff fixation takes place.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: January 27, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Colin William Greenhalgh, David Francis Newton, Dennis Eckersley, Ian Cheetham, Duncan Adrian Sidney Phillips, Kenneth Dunkerley, Gerald Williams, Vibhas Chokshi
  • Dyeing process
    Patent number: RE29724
    Abstract: Dyeing nylon by applying sulphonated or unsulphonated dyestuffs containing cyclic anhydride groups, anhydride forming dicarboxylic acid groups or half-esters or half-amides thereof, as free acids or as salts with ammonia or volatile amines, and heating the fibre until dyestuff fixation takes place.
    Type: Grant
    Filed: March 8, 1977
    Date of Patent: August 8, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Colin W. Greenhalgh, David F. Newton, Dennis Eckersley, Ian Cheetham, Duncan A. S. Phillips, Kenneth Dunkerley, Gerald Williams, Vibhas Chokshi