Patents by Inventor Douglas G. Murray

Douglas G. Murray 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: 5013769
    Abstract: The invention disclosed is a hydrogel-forming wound dressing or skin coating material suitable for household and veterinary use, consisting substantially entirely of wound-compatible and skin-compatible ingredients and comprising a first hydrophilic polymer, selected from polymers or copolymers of acrylic acid, polymers or copolymers of methacrylic acid, polymers or copolymers of itaconic acid, polymers or copolymers of maleic acid and polymers or copolymers of 3-butene-1,2,3-tricarboxylic acid, or combinations thereof, a second hydrophilic polymer which is capable of interacting with the first polymer to produce, upon drying, a hydrogel of improved water resistance and film forming properties relative to the first polymer alone and water. This material is film forming and substantially transparent but capable of being made opaque.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: May 7, 1991
    Assignee: Medipro Sciences Limited
    Inventors: Douglas G. Murray, Dennis C. Smith, James E. Guillet
  • Patent number: 4920158
    Abstract: The invention disclosed is a hydrogel-forming wound dressing or skin coating material suitable for household and veterinary use, consisting substantially entirely of wound-compatible and skin-compatible ingredients and comprising a first hydrophilic polymer, selected from polymers or copolymers of acrylic acid, polymers or copolymers of methacrylic acid, polymers or copolymers of itaconic acid, polymers or copolymers of maleic acid and polymers or copolymers of 3-butene-1,2,3-tricarboxylic acid, or combinations thereof, a second hydrophilic polymer which is capable of interacting with the first polymer to produce, upon drying, a hydrogen of improved water resistance and film forming properties relative to the first polymer alone and water. This material is film forming and substantially transparent but capable of being made opaque.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: April 24, 1990
    Assignee: Medipro Sciences Limited
    Inventors: Douglas G. Murray, Dennis C. Smith, James E. Guillet
  • Patent number: 4778834
    Abstract: Composites useful, for example, in dental restorative procedures comprising a mixture of particulate ceramic hydroxylapatite and a polymerizable monomer or mixture of polymerizable monomers wherein said ceramic hydroxylapatite particles, prior to mixing and polymerizing with said polymerizable monomers, are coated first with a siliceous material and then with an organosilane and a process for preparation of the same.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: October 18, 1988
    Assignee: Sterling Drug Inc.
    Inventor: Douglas G. Murray
  • Patent number: 4767619
    Abstract: The invention disclosed is a burn wound-adherent dressing material comprising a complex of gelatin and a water-soluble resin material such as polyethylenimine. The dressing material may be in the form of a preformed film or in the form of an aqueous coating which sets to a gel and dries to a continuous wound-adherent film in situ.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: August 30, 1988
    Assignee: Her Majesty the Queen in right of Canada as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventor: Douglas G. Murray
  • Patent number: 4659572
    Abstract: A burn wound-adherent dressing material comprising a complex of gelatin and a water-soluble resin material such as polyethylenimine. The dressing material may be in the form of a preformed film or in the form of an aqueous coating which sets to a gel and dries to a continuous wound-adherent film in situ.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: April 21, 1987
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventor: Douglas G. Murray
  • Patent number: 4572906
    Abstract: The invention disclosed is a surgical dressing, particularly useful for the protection of wounds during the healing process. The dressing comprises a blend of gelatin and chitosan in a weight ratio of about 3:1 to 1:3 and a compatible plasticizer in an amount of 0-40% w/w based on the combined weight of gelatin and chitosan.
    Type: Grant
    Filed: October 2, 1984
    Date of Patent: February 25, 1986
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventors: Brian G. Sparkes, Douglas G. Murray