Patents by Inventor John A. Rock

John A. Rock 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).

  • Poly(biphenyl ether sulfone) resins having improved UV yellowing resistance
    Patent number: 6482880
    Abstract: Poly(biphenyl ether sulfone) resins are improved in resistance to UV yellowing when blended with up to 50 wt % polyetherimide. Flame retardant blends of poly(biphenyl ether sulfone) and polyetherimide are particularly useful in fabricating appearance parts for aircraft interiors.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: November 19, 2002
    Assignee: Solvay Advanced Polymers, LLC
    Inventor: John A. Rock
  • 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
  • Polyetherimide-polyamide compositions
    Patent number: 5166246
    Abstract: Polyphenylene ether- polyamide compositions having improved resistance to water absorption and swell are provided by incorporating therein a phenolic compound.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: November 24, 1992
    Assignee: General Electric Company
    Inventors: Robert R. Gallucci, John A. Rock
  • 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.
  • Flame retardant ternary blends of polyetherimide, polyphenylene ether and block copolymer of a vinyl aromatic hydrocarbon and an alkene compound
    Patent number: 4873287
    Abstract: The present invention relate to a ternary polymer blend containing in admixture (a) a polyetherimide; (b) a polyphenylene ether; and (c) a block copolymer of a vinyl aromatic compound and an alkene compound. These ternary blends exhibit high glass transition temperatures and excellent flexural properties.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: October 10, 1989
    Assignee: General Electric Company
    Inventors: Fred F. Holub, Visvaldis Abolins, John A. Rock
  • Polyetherimide-liquid crystal polymer blends
    Patent number: 4871817
    Abstract: Disclosed are blends of (a) a polyetherimide and (b) a liquid crystal polymer. The liquid crystal polymer is an aromatic copolyester which exhibits melt anisotropy. The blends exhibit a higher heat distortion temperature higher flexural modulus and specific gravity over the polyetherimide component alone and have a higher tensile strength than that associated with the liquid crystal polymer alone.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: October 3, 1989
    Assignee: General Electric Company
    Inventor: John A. Rock
  • Ternary polymer blends containing a polyetherimide, a polyphthalate carbonate, and rubber modified vinyl aromatic polymer
    Patent number: 4855356
    Abstract: The present invention relates to ternary polymer blends containing (a) a polyetherimide, (b) a rubber modified vinyl aromatic polymer, and (c) a polyphthalate carbonate. The blends have excellent high temperature properties, improved impact resistance values and have excellent flexural values.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: August 8, 1989
    Assignee: General Electric Company
    Inventors: Fred F. Holub, John A. Rock
  • Polycarbonate-siloxane polyetherimide copolymer blends
    Patent number: 4816527
    Abstract: A polymer blend containing a polycarbonate and a siloxane-polyetherimide copolymer. The blends of the invention have improved impact strength, particularly thick section impact strength, over the unmodified polycarbonates. In addition the blends have good physical properties, relatively low flammability and are resistant to environmental stress cracking and crazing.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: March 28, 1989
    Assignee: General Electric Company
    Inventor: John A. Rock
  • Polyetherimide bearing compositions
    Patent number: 4724251
    Abstract: Nonmetallic bearing compositions contain a polyetherimide resin and, as a modifier, a fluoropolymer, such as polytetrafluoroethylene. The present compositions can be fabricated into a variety of shapes by injection molding, and have excellent wear resistance, load-bearing capabilities, and low coefficients of friction without the use of external lubrication.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: February 9, 1988
    Assignee: General Electric Co.
    Inventor: John A. Rock
  • 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
  • Polyetherimide-polyamide blends
    Patent number: 4657987
    Abstract: Polyamide-polyetherimide blends containing from 5% to 39% by weight of polyetherimide have been found to have improved mold shrinkage and water absorption characteristics.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: April 14, 1987
    Assignee: General Electric Company
    Inventors: John A. Rock, Harold F. Giles, Jr.
  • Flame retardant polyetherimide-polycarbonate blends
    Patent number: 4629759
    Abstract: Flame retardant polyetherimide/polycarbonate blend are prepared by incorporating therein a flame retarding modifier therefor selected from the group consisting of brominated polystyrenes and a mixture thereof with an acrylic rubber composite interpolymer.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: December 16, 1986
    Assignee: General Electric Company
    Inventor: John A. Rock
  • Shaped article obtained from a carbonate-polyester composition
    Patent number: 4188314
    Abstract: A shaped article of an aromatic carbonate polymer and a polyester derived from cyclohexanedimethanol and a mixture of iso- and terephthalic acids.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: February 12, 1980
    Assignee: General Electric Company
    Inventors: Daniel W. Fox, John A. Rock
  • Thermoplastic molding composition
    Patent number: 4124652
    Abstract: A thermoplastic molding composition comprising a chlorine containing bisphenol polycarbonate and a polyester derived from a cyclohexanedimethanol.
    Type: Grant
    Filed: December 14, 1976
    Date of Patent: November 7, 1978
    Assignee: General Electric Company
    Inventors: Clayton B. Quinn, John A. Rock
  • Process for the preparation of polyester compositions having increased melt elasticity
    Patent number: 4020122
    Abstract: The melt elasticity of high molecular weight linear polyesters is enhanced by adding a minor proportion of an organic polyepoxide, and heating the resulting mixture. The products of the process are suitable for injection or extrusion blow molding and blown film extrusion.
    Type: Grant
    Filed: January 5, 1973
    Date of Patent: April 26, 1977
    Assignee: General Electric Company
    Inventors: Willem F. H. Borman, John A. Rock