Patents by Inventor John Tyrell

John Tyrell 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).

  • Compatibilization of polycarbonate blends
    Patent number: 4552924
    Abstract: A process of molding a polymer admixture with improved compatability which comprises, preparing an admixture of (i) an aromatic carbonate polymer, (ii) a polyolefin or modified polyolefin in sufficient quantity to impact modify the aromatic carbonate polymer, and (iii) an amount of catalyst sufficient to compatibilize (i) and (ii) selected from the group consisting of basic compounds of alkali or alkaline earth metals and molding said admixture.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: November 12, 1985
    Assignee: General Electric Company
    Inventors: Niles R. Rosenquist, John A. Tyrell
  • Flame retardant polycarbonate
    Patent number: 4535108
    Abstract: Novel compounds of the metal salts of certain phenol ester sulfonic acids are useful as a flame retardant additive in polycarbonate composition.
    Type: Grant
    Filed: February 25, 1981
    Date of Patent: August 13, 1985
    Assignee: General Electric Company
    Inventors: Niles R. Rosenquist, John A. Tyrell
  • Stabilized polycarbonate-polyester compositions
    Patent number: 4532290
    Abstract: Compositions comprising predominately a polycarbonate resin, e.g., poly(bisphenol A carbonate), and a polyester resin, e.g., poly(1,4-butylene terephthalate), alone, or in combination with one or more second resins, are melt stabilized with monosodium phosphate and/or monopotassium phosphate.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: July 30, 1985
    Assignee: General Electric Company
    Inventors: Donald B. G. Jaquiss, Russell J. McCready, John A. Tyrell
  • Compatibilization of polycarbonate blends
    Patent number: 4496693
    Abstract: A composition comprising an admixture ofa. an aromatic carbonate polymer,b. a polyolefin or modified polyolefin in sufficient quantity to impact modify the aromatic carbonate polymer, andc. an amount of catalyst sufficient to compatibilize a and b selected from the group consisting of basic compounds of alkali or alkaline earth metals.
    Type: Grant
    Filed: December 1, 1983
    Date of Patent: January 29, 1985
    Assignee: General Electric Company
    Inventors: Niles R. Rosenquist, John A. Tyrell
  • Composition comprising graft polycarbonates
    Patent number: 4469852
    Abstract: This invention relates to novel thermoplastic compositions that are based on an aromatic polycarbonate in admixture with impact modifying quantities of a modified aromatic polycarbonate to which are grafted polymers of a long chain alkenyl compound.
    Type: Grant
    Filed: June 15, 1983
    Date of Patent: September 4, 1984
    Assignee: General Electric Company
    Inventors: John A. Tyrell, Omar M. Boutni, Gary L. Freimiller
  • Composition comprising a polyolefin and a block copolymer of a dihydric phenol monomer, a carbonate precursor and a polyphenylene oxide resin
    Patent number: 4463132
    Abstract: A novel thermoplastic composition is disclosed which is based on polyolefin and a block copolymer of a dihydric phenolic monomer, a carbonate precursor and a polyphenylene oxide resin. These compositions may be used as molding resins and have better compatibility than admixtures of aromatic polycarbonate and a polyolefin.
    Type: Grant
    Filed: June 15, 1983
    Date of Patent: July 31, 1984
    Assignee: General Electric Company
    Inventors: John A. Tyrell, Ping Y. Liu, Gary L. Freimiller
  • Stabilized polycarbonate compositions
    Patent number: 4407996
    Abstract: A composition comprising an aromatic carbonate polymer in admixture with an effective thermal stabilizing amount of a sulfone compound or a sulfonyl containing polymer.
    Type: Grant
    Filed: August 26, 1981
    Date of Patent: October 4, 1983
    Assignee: General Electric Company
    Inventors: Stephen M. Cooper, Sheldon J. Shafer, John A. Tyrell
  • Stabilized polycarbonate compositions
    Patent number: 4403054
    Abstract: A composition comprising an aromatic carbonate polymer in admixture with an effective thermal stabilizing amount of a sulfoxide compound or a sulfinyl containing polymer.
    Type: Grant
    Filed: August 26, 1981
    Date of Patent: September 6, 1983
    Assignee: General Electric Company
    Inventors: Victor Mark, John A. Tyrell
  • Carbonate copolymers prepared from imide reactants
    Patent number: 4393190
    Abstract: Novel carbonate polymers comprised of the reaction product of a dihydric phenol, a carbonate precursor, and at least one imide selected from the group of compounds represented by the formulae ##STR1##
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: July 12, 1983
    Assignee: General Electric Company
    Inventors: John A. Tyrell, Gary L. Freimiller
  • Flame retardant polycarbonates
    Patent number: 4371650
    Abstract: Polycarbonates are flame retarded with novel mixture of metal salts of sulfonated di-p-cumyl-phenyl carbonate.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: February 1, 1983
    Assignee: General Electric Company
    Inventors: Niles R. Rosenquist, John A. Tyrell
  • Polycarbonates stabilized with sulfolane derivatives
    Patent number: 4362829
    Abstract: A composition comprising an aromatic carbonate polymer in admixture with an effective thermal stabilizing amount of a compound of formula ##STR1##
    Type: Grant
    Filed: August 26, 1981
    Date of Patent: December 7, 1982
    Assignee: General Electric Company
    Inventors: Stephen M. Cooper, Sheldon J. Shafer, John A. Tyrell