Patents by Inventor Lee P. McMaster

Lee P. McMaster 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).

  • Copolyesters
    Patent number: 5039717
    Abstract: Injection-moldable copolyesters of terephthalate units, ethylene units and a high proportion (e.g. 82-87) mole %) of oxybenzoate units, and cookware made of such copolyesters. Process for making such copolyesters by reacting polyethylene terephthalate with p-acetoxybenzoic acid in a solvent, first at a temperature below 240.degree. C. to product a fragmented polyester, raising the temperature to split off acetic acid, then adding more acetoxybenzoic acid to raise the oxybenzoate content to more than 80 mole %.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: August 13, 1991
    Assignee: Amoco Corporation
    Inventors: James H. Kawakami, Lloyd M. Robeson, Bernard Cooker, Lee P. McMaster, Louis M. Maresca
  • Bis(acid chloride) terminated polyaryl ether ketone oligomer
    Patent number: 5037936
    Abstract: Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: August 6, 1991
    Assignee: Amoco Corporation
    Inventors: Robert A. Clendinning, James E. Harris, George T. Kwiatkowski, Lee P. McMaster, Markus Matzner, Paul A. Winslow
  • Laminates containing coextruded scrap
    Patent number: 4877682
    Abstract: A continuous plastic laminate having improved stiffness at use temperature, comprising at least three melt coextruded sheets, each comprising a thermoplastic polymer or polymer blend, the outside sheets having a higher stiffness at use temperature than at least one inside sheet.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: October 31, 1989
    Assignee: Amoco Corporation
    Inventors: Marvin E. Sauers, Tyler F. Hartsing, Jr., Lee P. McMaster
  • Poly (aryl ether ketone) block copolymers
    Patent number: 4861915
    Abstract: Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: August 29, 1989
    Assignee: Amoco Corporation
    Inventors: Robert A. Clendinning, James E. Harris, George T. Kwiatkowski, Lee P. McMaster, Markus Matzner, Paul A. Winslow
  • Poly(aryl ether ketone) block copolymers
    Patent number: 4786694
    Abstract: Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: November 22, 1988
    Assignee: Amoco Corporation
    Inventors: Robert A. Clendinning, James E. Harris, George T. Kwiatkowski, Lee P. McMaster, Markus Matzner, Paul A. Winslow
  • Novel poly(aryl ether ketones)
    Patent number: 4731429
    Abstract: Described herein are novel poly(aryl ether ketones) which display unique and outstanding high temperature properties, a unique blending behavior and excellent fabricability characteristics.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: March 15, 1988
    Assignee: Amoco Corporation
    Inventors: Lee P. McMaster, Paul A. Winslow
  • Coagulative recovery of polysulfone resins from solutions thereof
    Patent number: 3933764
    Abstract: Polysulfone resins dissolved in organic solvents can be recovered from these solutions by dispersion into water followed by treatment of the dispersion with an aliphatic hydrocarbon.
    Type: Grant
    Filed: July 25, 1974
    Date of Patent: January 20, 1976
    Assignee: Union Carbide Corporation
    Inventor: Lee P. McMaster