Patents by Inventor Andrew Courtis

Andrew Courtis 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).

  • CONTACT LENS MATERIAL
    Publication number: 20170176642
    Abstract: The present invention relates to contact lenses, contact lens materials, and a method of manufacturing a contact lens material comprising: (i) providing a composition comprising: i. a tris(siloxy)silyl group-containing monomer and/or a tetrakis(siloxy)disiloxane monomer; and ii. a polymeric monomer having the formula: iii. wherein R?H, alkyl or aryl; R1?H or alkyl; x can be 0 if y is an integer; and y can be 0 if x is an integer; and (ii) curing the composition.
    Type: Application
    Filed: March 6, 2015
    Publication date: June 22, 2017
    Applicant: DEALTFORCE LIMITED
    Inventors: Andrew Courtis, Peter W J Morrison
  • Polymers with vinylic units and aromatic units
    Patent number: 4849504
    Abstract: A process for the preparation of polymeric compositions which comprise novel polymers and copolymers of certain 1,2-disubstituted-cyclohexadienes, aromatization of such polymers in the form of inter alia fibers, and novel aromatic polymers.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: July 18, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventors: Denis G. H. Ballard, Andrew Courtis, Ian M. Shirley
  • Vinyl chloride polymer composition containing (meth)acrylate-alpha methyl styrene copolymer
    Patent number: 4746705
    Abstract: Vinyl chloride polymer (PVC) composition especially suitable for calendering which comprises PVC, at least one copolymer of an alkyl (meth)acrylate (preferably n-butyl acrylate) and alpha methyl styrene of low molecular weight (10,000 to 100,000) achieved by performing the copolymerization in the presence of a chain transfer agent, particularly cyclohexene, and which composition optionally contains a processing aid, and wherein the PVC and said at least one alkyl (meth)acrylate copolymer are admixed by performing the VC polymerization process to produce the PVC in the presence of the alkyl (meth)acrylate copolymer.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: May 24, 1988
    Assignee: Imperial Chemical Industries PLC
    Inventors: Andrew Courtis, Marcel B. Elser
  • Preparation of aromatic polymers from cyclohexa-3,5-diene polymers
    Patent number: 4536555
    Abstract: A process for the preparation of polymeric compositions which comprise novel polymers and copolymers of certain 1,2-disubstituted-cyclohexadienes, aromatization of such polymers in the form of inter alia fibres, and novel aromatic polymers.
    Type: Grant
    Filed: August 8, 1984
    Date of Patent: August 20, 1985
    Assignee: Imperial Chemical Industries Limited
    Inventors: Denis G. H. Ballard, Andrew Courtis, Ian M. Shirley
  • Poly(1,2-disubstituted cyclohexa-3,5-dienes
    Patent number: 4524198
    Abstract: A process for the preparation of polymeric compositions which comprise novel polymers and copolymers of certain 1,2-disubstituted-cyclohexadienes, aromatization of such polymers in the form of inter alia fibres, and novel aromatic polymers.
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: June 18, 1985
    Assignee: Imperial Chemical Industries Limited
    Inventors: Denis G. H. Ballard, Andrew Courtis, Ian M. Shirley
  • Preparation of aromatic polymers from cyclohexa-3,5-diene polymers
    Patent number: 4476296
    Abstract: A process for the preparation of polymeric compositions which comprise novel polymers and copolymers of certain 1,2-disubstituted-cyclohexadienes, aromatization of such polymers in the form of inter alia fibers, and novel aromatic polymers.
    Type: Grant
    Filed: October 6, 1982
    Date of Patent: October 9, 1984
    Assignee: Imperial Chemical Industries Limited
    Inventors: Denis G. H. Ballard, Andrew Courtis, Ian M. Shirley