Patents Represented by Attorney Spencer D. Conard
  • Patent number: 5026790
    Abstract: Blow moldable polyester compositions are provided. The polyester compositions contain respective amounts of thermoplastic polyester resin, salt of aliphatic polycarboxylic acid and multifunctional epoxide. The compositions exhibit suitable melt strength for blow molding thereof.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: June 25, 1991
    Assignee: General Electric Company
    Inventors: John A. Tyrell, S. Jack Willey
  • Patent number: 5019641
    Abstract: Polyamides obtained by low pressure melt processing involving reactions of diesters of dicarboxylic acids with 1,3-diaminopropane. The polyamides are useful as molding resins.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: May 28, 1991
    Assignee: General Electric Company
    Inventors: Donald C. Clagett, Sheldon J. Shafer
  • Patent number: 5015726
    Abstract: An amorphous polyamide having a high heat distortion temperature is produced by reacting toluenediamine with isophthalic acid, and optionally terephthalic acid, in the presence of either an aliphatic diacid, an aliphatic diamine or a mixture thereof. The polyamide provides the combined properties of a high heat distortion temperature, low shrinkage upon cooling, high levels of chemical resistance, is processable at temperatures below its degradation temperature, and has a high flexural modulus. With these combined properties the polyamide is particularly suitable for fiber reinforced automotive applications requiring exposure to excessive heat in conventional automotive paint bake ovens.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: May 14, 1991
    Assignee: General Electric Company
    Inventors: Edward N. Peters, Geoffrey H. Riding, G. F. Willard
  • Patent number: 5011899
    Abstract: Polysulfonecarbonate-siloxane block copolymers provide ductile resins having high heat distortion temperatures and high glass transition temperatures. The polysulfonecarbonate-siloxane block copolymers are useful as molding compounds.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: April 30, 1991
    Assignee: General Electric Company
    Inventor: Paul D. Sybert
  • Patent number: 4999384
    Abstract: Foamed thermoplastic blends of Nylon 6,I/T and polycarbonate resin are provided which exhibit good chemical resistance. The foamed blends are useful for making foamed articles such as chemically resistant foamed sheet.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: March 12, 1991
    Assignee: General Electric Company
    Inventors: Daniel L. Roberts, G. Fred Willard
  • Patent number: 4996246
    Abstract: Compounds having defined functional groups are described which color stablize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 26, 1991
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Patent number: 4996245
    Abstract: Compounds having defined functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to steriliizing radiation.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 26, 1991
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Patent number: 4996247
    Abstract: Compounds having defined functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 26, 1991
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Patent number: 4996248
    Abstract: Compounds having defined functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 26, 1991
    Assignee: General Electic Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Patent number: 4996244
    Abstract: Compounds having defined functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 26, 1991
    Assignee: General Electric Company
    Inventor: Roger W. Avakian
  • Patent number: 4994510
    Abstract: Poly(carbonate-siloxane) copolymers having reduced tendencies to burn are provided by the addition of an aromatic sulfone sulfonate thereto. These materials find utility in electrical applications.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: February 19, 1991
    Assignee: General Electric Company
    Inventors: Raymond Z. Naar, Edward N. Peters
  • Patent number: 4992322
    Abstract: A coextruded moisture resistant polycarbonate article has a relative thin moisture resistant, polyphthalate-carbonate layer adhered to a relatively thick aromatic polycarbonate corelayer. The coextruded article has the high degree of transparency of aromatic polycarbonates and the moisture resistance and haze resistance of polyphthalate-carbonate. Coextruded sheet and film of the present invention may be subsequently thermoformed without losses in the desirable properties thereof.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: February 12, 1991
    Assignee: General Electric Company
    Inventors: Herbert L. Curry, Kirk L. Kimbel
  • Patent number: 4983718
    Abstract: A process for minimizing the formation of color during preparation of polyamides by interchange of diesters of dicarboxylic acids with diamines in the presence of hypophosphorous acid.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: January 8, 1991
    Assignee: General Electric Company
    Inventors: Kenneth P. Blackmon, Donald C. Clagett, Sheldon J. Shafer
  • Patent number: 4983719
    Abstract: An amorphous polyamide resin is provided having the combined properties of a high glass transition temperature and excellent oxygen barrier properties. The polyamide is obtained from the reaction products of para-xylylene diamine, adipic acid and isophthalic acid, and finds particular utility as a container layer for hot fill packaging of fruit juices.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: January 8, 1991
    Assignee: General Electric Company
    Inventors: Daniel W. Fox, Edward N. Peters, Geoffrey H. Riding, G. Fred Willard
  • Patent number: 4973650
    Abstract: 1,4"-(bishalophenylsulfone)terphenyl and polymers therefrom are provided. The polymers exhibit high heat distortion temperatures, and high levels of chemical resistance and thermo-oxidative stability. The polymers are useful as molding compositions for making molded articles.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: November 27, 1990
    Assignee: General Electric Company
    Inventor: Edward N. Peters
  • Patent number: 4970272
    Abstract: Polyphenylene ether-polyamide compositions having improved resistance to water absorption and swell are provided by incorporating therein a phenolic compound.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: November 13, 1990
    Assignee: General Electric Company
    Inventor: Robert R. Gallucci
  • Patent number: 4952448
    Abstract: A fibre reinforced plastic structure comprising a matrix of thermoplastic material and conductive fibres provides effective EMI shielding. Process for making the structure permits the employ of relatively long conductive fibres which reduce the fibre loading required for effective shielding.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: August 28, 1990
    Assignee: General Electric Company
    Inventors: Daniel E. Bullock, Horold F. Giles, Jr., Walter L. Hall
  • Patent number: 4946531
    Abstract: A process for preparing a hardcoated polycarbonate sheet involves (i) ultraviolet radiation curing an acrylic coating onto one surface of a flexible polycarbonate film via a drum casting technique to yield a flexible, abrasion and chemical resistant hardcoated film; and (ii) laminating the hardcoated film onto a thick rigid polycarbonate substrate by an on-line ultraviolet radiation lamination method. The process is fast, requires minimal labor and provides high optical quality hardcoats for polycarbonate sheet.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: August 7, 1990
    Assignee: General Electric Company
    Inventors: Earl T. Crouch, Ronald F. Sieloff
  • Patent number: 4942188
    Abstract: The invention relates to polymer mixtures which comprise a polybutylene terephthalate, an aromatic polycarbonate, and a dialkyl silicone fluid. Due to the presence of the dialkyl silicone fluid compound a good lacquer bonding is obtained.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: July 17, 1990
    Assignee: General Electric Company
    Inventors: Wilhelmus Jozefus L. A. Hamersma, Jan de Boer, Wilhelmus M. M. Roovers, Gerrit de Wit
  • Patent number: 4939186
    Abstract: Compounds having defined alkene functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: July 3, 1990
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor