Patents by Inventor Nancy E. Larsen

Nancy E. Larsen 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).

  • Biocompatible viscoelastic gel slurries, their preparation and use
    Patent number: 5143724
    Abstract: Disclosed are biocompatible viscoelastic gel slurries formed from a polymeric gel, preferably a hyaluronan or a derivative thereof such as hylan swollen in an aqueous medium and a fluid phase which is an aqueous solution of a polymer which may also but not necessarily be a hyaluronan or derivative thereof. Also disclosed are methods of making such slurries, controlling their rheological properties and the uses thereof.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: September 1, 1992
    Assignee: Biomatrix, Inc.
    Inventors: Edward Leshchiner, Endre A. Balazs, Nancy E. Larsen, Adelya Leshchiner
  • Drug delivery systems based on hyaluronans derivatives thereof and their salts and methods of producing same
    Patent number: 5128326
    Abstract: Disclosed are drug delivery systems based on a polymeric component which is soluble or insoluble (cross-linked) hyaluronan or hyaluronan copolymerized with another hydrophilic polymer or hylan and one or more substances having biological or pharmacological activity and methods of preparing same.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: July 7, 1992
    Assignee: Biomatrix, Inc.
    Inventors: Endre A. Balazs, Adolf Leshchiner, Nancy E. Larsen
  • Compositions for therapeutic percutaneous embolization and the use thereof
    Patent number: 4795741
    Abstract: Percutaneous emboli are formed for therapeutic and/or corrective reasons by using a composition which includes crosslinked gells of hyaluronic acid (HA), hylan (HY) or mixed crosslinked gels of HA or HY with other materials, thrombin and cationic substances containing quaternary ammonium groups. Other optional materials include fillers and radio-opaque substances.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: January 3, 1989
    Assignee: Biomatrix, Inc.
    Inventors: Adolf Leshchiner, Nancy E. Larsen, Endre A. Balazs, Sadek K. Hilal