Patents by Inventor Jeffrey R. Churchill

Jeffrey R. Churchill 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).

  • Continuous release formulations
    Patent number: 4942035
    Abstract: Pharmaceutical compositions comprising a pharmacologically active polypeptide and a pharmacologically or veterinarily acceptable amphipathic, non-cross-linked linear, branched or graft block copolymer, which has a minimum weight average molecular weight of 5,000, in which the hydrophobic component is biodegradable and the hydrophilic component may or may not be biodegradable, the composition being capable of absorbing water to form a hydrogel when placed in an aqueous, physiological-type environment; copolymers suitable for use in said compositions; and method for the manufacture of such copolymers.
    Type: Grant
    Filed: March 27, 1985
    Date of Patent: July 17, 1990
    Assignee: Imperial Chemical Industries
    Inventors: Jeffrey R. Churchill, Francis G. Hutchinson
  • Biodegradable amphipathic copolymers
    Patent number: 4877606
    Abstract: A pharmaceutically or veterinarily acceptable amphipathic, non-cross linked linear, branched or graft block copolymer, which has a minimum weight average molecular-weight of 1000, in which the hydrophobic component is biodegradable or hydrolytically unstable under normal physiological conditions, and the hydrophilic component may or may not be biodegradable or hydrolytically unstable under such conditions, and which copolymer is self-dispersible in water; together with mixtures of such a copolymer and a drug, which may be water-soluble or water-insoluble, which mixtures are self-dispersible in waterf; and processes for the manufacture of such copolymers and such mixtures.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: October 31, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventors: Jeffrey R. Churchill, Francis G. Hutchinson
  • Biodegradable amphipathic copolymers
    Patent number: 4745160
    Abstract: A pharmaceutically or veterinarily acceptable amphipathic, non-cross linked linear, branched or graft block copolymer, which has a minimum weight average molecular-weight of 1000, in which the hydrophobic component is biodegradable or hydrolytically unstable under normal physiological conditions, and the hydrophilic component may or may not be biodegradable or hydrolytically unstable under such conditions, and which copolymer is self-dispersible in water; together with mixtures of such a copolymer and a drug, which may be water-soluble of water-insoluble, which mixtures are self-dispersible in water; and processes for the manufacture of such copolymers and such mixtures.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: May 17, 1988
    Assignee: Imperial Chemical Industries PLC
    Inventors: Jeffrey R. Churchill, Francis G. Hutchinson
  • Continuous release formulations
    Patent number: 4526938
    Abstract: Pharmaceutical compositions comprising a pharmacologically active polypeptide and a pharmacologically or veterinarily acceptable amphipathic, non-cross-linked linear, branched or graft block copolymer, which has a minimum weight average molecular weight of 5,000, in which the hydrophobic component is biodegradable and the hydrophilic component may or may not be biodegradable, the composition being capable of absorbing water to form a hydrogel when placed in an aqueous, physiological-type environment; copolymers suitable for use in said compositions; and method for the manufacture of such copolymers.
    Type: Grant
    Filed: April 15, 1983
    Date of Patent: July 2, 1985
    Assignee: Imperial Chemical Industries PLC
    Inventors: Jeffrey R. Churchill, Francis G. Hutchinson