Patents by Inventor Karen L. Carman

Karen L. Carman 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).

  • Branched copolyesters especially suitable for extrusion blow molding
    Patent number: 5523382
    Abstract: Disclosed are polyester particles adapted to be extrusion blow molded into articles having improved rheological qualities and a process for producing such particles, said particles comprising a polyester having repeat units from about 40 to 100 mol % terephthalic acid, about 80-98 mol % ethylene glycol, about 0.5-10 mol % 1,4-cyclohexanedimethanol, about 3-10 mol % diethylene glycol, and about 0.05-1.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: June 4, 1996
    Assignee: Eastman Chemical Company
    Inventors: Randy S. Beavers, Karen L. Carman, Michael L. Cassell, Joseph F. Knight, James W. Mercer
  • Branched copolyesters especially suitable for extrusion blow molding
    Patent number: 5442036
    Abstract: Disclosed are polyester particles adapted to be extrusion blow molded into articles having improved rheological qualities and a process for producing such particles, said particles comprising a polyester having repeat units from about 40 to 100 mol % terephthalic acid, about 80-98 mol % ethylene glycol, about 0.5-10 mol % 1,4-cyclohexanedimethanol, about 3-10 mol % diethylene glycol, and about 0.05-1.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: August 15, 1995
    Assignee: Eastman Chemical Company
    Inventors: Randy S. Beavers, Karen L. Carman, Michael L. Cassell, Joseph F. Knight, James W. Mercer