Patents by Inventor Norman E. Durfee, Jr.

Norman E. Durfee, Jr. 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).

  • Polyphenylene ether/siloxane polyetherimide copolymer
    Patent number: 5280085
    Abstract: Polymer blends contain a polyphenylene ether and a siloxane-polyetherimide copolymer. These blends exhibit good ductility, good injection moldability, very low flammability and high impact strengths.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: January 18, 1994
    Assignee: General Electric Company
    Inventors: John A. Rock, Norman E. Durfee, Jr., L. Joseph Male
  • Flame resistant polyetherimide resin blends
    Patent number: 5106915
    Abstract: Flame resistant polymer blends contain a polyetherimide and an impact strength-enhancing amount of a siloxane-polyetherimide copolymer. These blends exhibit high impact strengths, good blow-moldability and injection moldability, amenability to thermoforming and very low flammability. The blends are particularly suited to the manufacture of aircraft cabin interior components.
    Type: Grant
    Filed: August 8, 1991
    Date of Patent: April 21, 1992
    Assignee: General Electric Company
    Inventors: John A. Rock, L. Joseph Male, Norman E. Durfee, Jr.
  • Flame resistant polyetherimide resin blends
    Patent number: 5051483
    Abstract: Flame resistant polymer blends contain a polyetherimide and an impact strength-enhancing amount of a siloxane-polyetherimide copolymer and a solvent resistance-enhancing amount of a polycarbonate. These blends exhibit excellent impact strengths, high heat distortion temperatures, good solvent resistance, and amenability to blow-molding, injection molding and thermoforming operations. The blends are particularly suited to the manufacture of aircraft cabin interior components.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: September 24, 1991
    Assignee: General Electric Company
    Inventors: John A. Rock, L. Joseph Male, Norman E. Durfee, Jr.
  • Impact modified polyetherimide-polycarbonate blends
    Patent number: 4673708
    Abstract: Ternary polymer blends contain (a) a polyetherimide, (b) a polycarbonate and (c) a minor amount of an acrylic rubber interpolymer composite. These blends are characterized by high impact strengths and advantageous processing temperatures.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: June 16, 1987
    Assignee: General Electric Company
    Inventors: John A. Rock, Norman E. Durfee, Jr., Robert O. Johnson