Patents by Inventor Valerie Ashby

Valerie Ashby 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).

  • Polyester based degradable materials and implantable biomedical articles formed therefrom
    Patent number: 8383725
    Abstract: A method of making an aliphatic polyester prepolymer, comprising: reacting, alone or in combination with other reactants, a diol with at least a first diacid (or a diester of said first diacid) to produce an aliphatic polyester prepolymer. The first diacid is preferably a trans-beta-hydromuconic acid (HMA). In some embodiments, the diol contains at least one ether linkage. In some embodiments the diol is further reacted with at a second diacid, or a diester of said second diacid, wherein said second diacid is different from said first diacid. Prepolymers produced from such processes and articles formed therefrom are also described.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: February 26, 2013
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Valerie Ashby, David Olson
  • Polyester Based Degradable Materials and Implantable Biomedical Articles Formed Therefrom
    Publication number: 20120027719
    Abstract: A method of making an aliphatic polyester prepolymer, comprising: reacting, alone or in combination with other reactants, a diol with at least a first diacid (or a diester of said first diacid) to produce an aliphatic polyester prepolymer. The first diacid is preferably a trans-beta-hydromuconic acid (HMA). In some embodiments, the diol contains at least one ether linkage. In some embodiments the diol is further reacted with at a second diacid, or a diester of said second diacid, wherein said second diacid is different from said first diacid. Prepolymers produced from such processes and articles formed therefrom are also described.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 2, 2012
    Inventors: Valerie Ashby, David Olson
  • Polyester based degradable materials and implantable biomedical articles formed therefrom
    Patent number: 8013061
    Abstract: A method of making an aliphatic polyester prepolymer, comprising: reacting, alone or in combination with other reactants, a diol with at least a first diacid (or a diester of the first diacid) to produce an aliphatic polyester prepolymer. The first diacid is preferably a trans-beta-hydromuconic acid (HMA). In some embodiments, the diol contains at least one ether linkage. In some embodiments the diol is further reacted with at a second diacid, or a diester of the second diacid, wherein the second diacid is different from the first diacid. Prepolymers produced from such processes and articles formed therefrom are also described.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: September 6, 2011
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Valerie Ashby, David Olson
  • POLYESTER BASED DEGRADABLE MATERIALS AND IMPLANTABLE BIOMEDICAL ARTICLES FORMED THEREFROM
    Publication number: 20090221781
    Abstract: A method of making an aliphatic polyester prepolymer, comprising: reacting, alone or in combination with other reactants, a diol with at least a first diacid (or a diester of said first diacid) to produce an aliphatic polyester prepolymer. The first diacid is preferably a trans-beta-hydromuconic acid (HMA). In some embodiments, the diol contains at least one ether linkage. In some embodiments the diol is further reacted with at a second diacid, or a diester of said second diacid, wherein said second diacid is different from said first diacid. Prepolymers produced from such processes and articles formed therefrom are also described.
    Type: Application
    Filed: March 5, 2007
    Publication date: September 3, 2009
    Inventors: Valerie Ashby, David Olson