Patents by Inventor Annette D. Shine

Annette D. Shine 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).

  • Preparation of homogeneous polymers using supercritical fluid solutions
    Patent number: 5567769
    Abstract: Homogeneous polymer blends are prepared from otherwise thermodynamically immiscible polymers, especially including block copolymers. Thus, polymers such as polystyrene/poly(methyl methacrylate) block copolymer or polystyrene/poly(1,2-butadiene) block copolymer are dissolved under pressure in supercritical fluid solvents such as chlorodifluoromethane and n-butane, respectively, and expanded through a fine nozzle. As the SCF solvent evaporates, the polymer deposits as a substantially homogeneous material.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: October 22, 1996
    Assignees: The Procter & Gamble Company, The Univ. of Delaware
    Inventors: Annette D. Shine, Steven D. Smith, Isao Noda
  • Precipitation of homogeneous polymer mixtures from supercritical fluid solutions
    Patent number: 5290827
    Abstract: Homogeneous polymer blends are prepared from otherwise thermodynamically immiscible polymers. Thus, mixtures of polymers such as poly (methyl methacrylate) and poly (ethyl methacrylate) are dissolved under pressure in supercritical fluid solvents such as chlorodifluoromethane and expanded through a fine nozzle. As the SCF solvent evaporates, the polymer mixture deposits as a substantially homogeneous blend.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: March 1, 1994
    Assignee: University of Delaware
    Inventor: Annette D. Shine