Patents by Inventor Andrew Hunter Morris Renfrew

Andrew Hunter Morris Renfrew 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).

  • Patent number: 6271355
    Abstract: Dyes of Formula (1) which are useful for the coloration of e.g. cellulosic materials and leathers. wherein: NiPc is a nickel phthalocyanine radical; r has a value from 1 to 3 inclusive; m has a value from 1 to 3 inclusive; p has a value from 0 to 1 inclusive; R1 is H, alkyl, substituted alkyl, aryl or substituted aryl; R2, R3 and R4 are each independently H, C1-6-alkyl or substituted C1-6-alkyl; A is phenylene, substituted phenylene, C1-6-alkylene or substituted C1-6-alkylene; Q is a labile substituent; B is phenylene, phenylene substituted by 1 or 2 sulpho groups or phenylene substituted by an alkyl or alkoxy group; Z is H or alkyl; and X and Y are each independently H, alkyl, alkoxy, halogen, carboxy or sulpho; provided that r+m+p does not exceed 4.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: August 7, 2001
    Assignee: Imperial Chemical Industries PLC
    Inventors: Denis Robert Annesley Ridyard, Andrew Hunter Morris Renfrew
  • Patent number: 5820661
    Abstract: An ink composition comprising:(i) a dye of Formula (1) or a salt thereof: ##STR1## wherein: A is optionally substituted phenylene;B and E each independently is optionally substituted phenylene or optionally substituted naphthylene;D is a coupling component;each R.sup.1 independently is H or optionally substituted alkyl;X is a labile or non-labile atom or group;each Z independently is --OR.sup.3, --SR.sup.3, --NR.sup.4 R.sup.5 or --Y--SO.sub.3 H in which Y is O or S; andR.sup.3, R.sup.4 and R.sup.5 each independently is H, optionally substituted alkyl, optionally substituted alkenyl, cycloalkyl, optionally substituted aralkyl, optionally substituted aryl or R.sup.4 or R.sup.5 together with the nitrogen atom to which they are attached form a 5 or 6 membered ring; and(ii) a medium comprising a low melting point solid, an organic solvent, or a mixture of water and one or more water-soluble organic solvent(s).
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: October 13, 1998
    Assignee: Zeneca Limited
    Inventors: Peter Gregory, Mark Kenworthy, Andrew Hunter Morris Renfrew
  • Patent number: 5703215
    Abstract: A process for the coloration of a substrate, especially a textile, comprising the steps of:(a) applying to the substrate a mixture comprising an aqueous solvent and a water-soluble dye comprising molecules which contain a nucleophilic group and an electrophilic group; and(b) heating or basifying or heating and basifying the dye thereby causing molecules of the dye to join together.Also claimed are dyes, polymers and oligomers.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: December 30, 1997
    Assignee: Zeneca Limited
    Inventors: Andrew Hunter Morris Renfrew, Andrew Paul Shawcross
  • Patent number: 4080369
    Abstract: 1,4-Di(hydroxy- or amino-)-2-[alkoxycarbonylmethylene(oxy or amino)phenyl(oxy)]anthraquinones. Disperse dyestuffs for synthetic textile materials, especially aromatic polyesters.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: March 21, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Andrew Hunter Morris Renfrew, Stephen Bernard Bostock
  • Patent number: 3963853
    Abstract: A coated transfer sheet for pressure-sensitive copying systems which comprises an organic colorless color former containing two or more potential chromophoric systems each of which is capable of being activated substantially immediately when the compound is brought into contact with one or more activating substances.
    Type: Grant
    Filed: December 27, 1972
    Date of Patent: June 15, 1976
    Assignee: Wiggins Teape Limited
    Inventors: Nigel Hughes, Andrew Hunter Morris Renfrew