Patents by Inventor Allen D. Wambach

Allen D. Wambach 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).

  • Patent number: 4559164
    Abstract: Poly(butylene terephthalate) injected molded articles which contain small uniformly distributed amounts of amorphous carbon or graphite powder, or graphitic carbon in the form of fibers, or any combination thereof, are electroconductive and possess decreased tendency to accumulate charges of static electricity. Minor amounts of glass fibers, polycarbonate resins and rubbery impact modifiers improve the electroconductivity imparted by the carbon.
    Type: Grant
    Filed: March 9, 1982
    Date of Patent: December 17, 1985
    Assignee: General Electric Company
    Inventors: Robert J. Kostelnik, Allen D. Wambach
  • Patent number: 4467057
    Abstract: Modified thermoplastic polyester compositions are provided which comprise (a) a poly(1,4-butylene terephthalate) resin or polyester copolymer and, optionally, a poly(ethylene terephthalate) resin (b) a modifier therefor comprising a combination of a selectively hydrogenation monoalkenyl arene-diene block copolymer resin and an aromatic polycarbonate, and (c) a mineral filler and, optionally, (d) a flame retardant. Modifier (b) and mineral filler (c) provide enhanced resistance to impact fracture, increased strength and improved resistance to heat distortion in articles molded from the compositions.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: August 21, 1984
    Assignee: General Electric Company
    Inventors: Ronald L. Dieck, Allen D. Wambach
  • Patent number: 4460731
    Abstract: Reinforced thermoplastic molding compositions are provided comprising a high molecular weight linear polyester, such as poly(1,4-butylene terephthalate) and another high molecular weight polyester, such as poly(ethylene terephthalate), in combination with talc and one or more reinforcing agents or fillers.
    Type: Grant
    Filed: October 12, 1983
    Date of Patent: July 17, 1984
    Assignee: General Electric Company
    Inventors: John E. Kochanowski, Allen D. Wambach
  • Patent number: 4414352
    Abstract: Flame-retardant thermoplastic molding compositions having improved physical and electrical arc track resistant properties are provided, the compositions comprising an intimate admixture of(a) a high molecular weight poly(1,4-butylene terephthalate) homo- or co-polyester,(b)(i) a copolymer of ethylene and vinyl acetate in combination with an aromatic polycarbonate;(ii) poly(ethylene terephthalate); or(iii) reinforcing glass;(c) a flame retardant agent; and(d) a mineral filler.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: November 8, 1983
    Assignee: General Electric Company
    Inventors: Stuart C. Cohen, Robert J. Kostelnik, Allen D. Wambach
  • Patent number: 4369280
    Abstract: Polybutylene terephthalate molding compositions which contain a small amount of ethylene-ethyl acrylate copolymer, or an ethylene-vinyl acetate copolymer, or a mixture of these copolymers, and optionally polyethylene, provide moldings which in preferred embodiments possess improved impact resistance and lower specific gravity, without more than negligible loss of other properties. Other conventional modifiers can be present.
    Type: Grant
    Filed: August 4, 1981
    Date of Patent: January 18, 1983
    Assignee: General Electric Company
    Inventors: Ronald L. Dieck, Frank N. Liberti, Allen D. Wambach
  • Patent number: 4322333
    Abstract: A thermoplastic molding composition having improved impact strength is provided, the composition comprising a thermoplastic resin selected from (i)a poly(1,4-butylene terephthalate)in combination with a poly(ethylene terephthalate)resin, mineral-filled, or (ii) a poly(1,4-butylene terephthalate) co-aromatic/aliphatic polyester, reinforced and/or mineral-filled, and a minor, effective amount of a copolymer of ethylene and vinyl acetate or a terpolymer of ethylene, vinyl acetate and methacrylic and/or acrylic acid.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: March 30, 1982
    Assignee: General Electric Company
    Inventors: John E. Kochanowski, Allen D. Wambach
  • Patent number: 4296021
    Abstract: Reinforced thermoplastic compositions are provided comprising a high molecular weight linear polyester, and a minor proportion of aluminum silicate alone or in combination with glass fiber reinforcement. The use of the aluminum silicate elevates strength, modulus and heat deflection temperature, while retaining the inherent resistance to high voltage breakdown of the polyester resin component.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: October 20, 1981
    Assignee: General Electric Company
    Inventor: Allen D. Wambach
  • Patent number: 4279801
    Abstract: Novel thermoplastic molding compositions are disclosed which are based on the combination of a linear thermoplastic polyester and a thermoplastic poly(ester-urethane).
    Type: Grant
    Filed: July 2, 1975
    Date of Patent: July 21, 1981
    Assignee: General Electric Company
    Inventors: Morton Kramer, Allen D. Wambach
  • Patent number: 4220735
    Abstract: Modified thermoplastic polyester compositions are provided which comprise (a) a poly(1,4-butylene terephthalate) resin in combination with a poly(ethylene terephthalate) resin and/or a polyester copolymer and (b) a modifier therefor comprising a combination of a selectively hydrogenated monoalkenyl arene-diene block copolymer resin and an aromatic polycarbonate. The compositions can include (c) reinforcing glass fibers and/or (d) a flame retardant. Modifier (b) provides enhanced resistance to impact fracture, increased strength and improved resistance to heat distortion in articles molded from the compositions.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: September 2, 1980
    Assignee: General Electric Company
    Inventors: Ronald L. Dieck, Allen D. Wambach
  • Patent number: 4140669
    Abstract: Reinforced thermoplastic compositions are provided comprising a poly(1,4-butylene terephthalate) resin, a poly(ethylene terephthalate) resin, and a reinforcing, warp resisting combination of talc and silica. The compositions optionally include a segmented copolyester resin, a silicon polymer and/or a fibrous glass reinforcement. The compositions are moldable to articles having improved resistance to warpage during heat treatment in comparison with molding compositions of talc, (poly(1,4-butylene terephthalate) and poly(ethylene terephthalate).
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: February 20, 1979
    Assignee: General Electric Company
    Inventors: Donald L. Phipps, Jr., Allen D. Wambach
  • Patent number: 4125571
    Abstract: A thermoplastic composition of a combination of polyesters comprising a poly(1,4-butylene terephthalate) and a polyester derived from a cyclohexanedimethanol.
    Type: Grant
    Filed: December 14, 1976
    Date of Patent: November 14, 1978
    Assignee: General Electric Company
    Inventors: Steven W. Scott, Allen D. Wambach
  • Patent number: 4124561
    Abstract: Reinforced thermoplastic compositions are provided which comprise a high molecular weight polyester and a mineral reinforcing filler comprising mica, talc or mixtures thereof in combination with a glass fiber reinforcement. The use of glass fibers together with the mineral reinforcement provides shatter resistance and further enhances other physical properties, such as tensile strength, modulus, impact strength and heat distortion temperature. Self-extinguishing embodiments are also disclosed.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: November 7, 1978
    Assignee: General Electric Company
    Inventors: Donald L. Phipps, Jr., Allen D. Wambach
  • Patent number: 4123415
    Abstract: Reinforced thermoplastic compositions are provided which comprise a high molecular weight polyester resin and a glass fiber reinforcement wherein the glass fibers have a maximum average standard diameter of about 0.0005 inches. The use of such glass fibers improves resistance to deflection by heat of fibrous glass reinforced compositions in comparison with a reinforced composition including glass fibers having an average standard diameter of greater than about 0.0005 inches.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: October 31, 1978
    Assignee: General Electric Company
    Inventor: Allen D. Wambach
  • Patent number: 4011193
    Abstract: Reinforced thermoplastic compositions are provided comprising a high molecular weight linear polyester, and a minor proportion of potassium titanate, substantially in the form of single filament crystals. The use of the potassium titanate elevates strength, modulus and heat deflection temperature, while retaining the inherent toughness of the polyester resin component.
    Type: Grant
    Filed: December 13, 1972
    Date of Patent: March 8, 1977
    Assignee: General Electric Company
    Inventor: Allen D. Wambach
  • Patent number: 3953394
    Abstract: Thermoplastic, stable, blended compositions comprising a combination of (a) a poly(ethylene terephthalate) resin and (b) a poly(1,4-butylene terephthalate) resin. The alloyed combination of resins can be reinforced with fillers and also rendered flame retardant.
    Type: Grant
    Filed: November 15, 1971
    Date of Patent: April 27, 1976
    Assignee: General Electric Company
    Inventors: Daniel W. Fox, Allen D. Wambach
  • Patent number: 3936400
    Abstract: Normally flammable foamed polyester resins (a) are rendered flame retardant by combination with (b) a flame retardant amount of (i) an aromatic carbonate copolymer, from 25 to 75 wt. % of the repeating units comprising chloro- or bromo-substituted dihydric phenol units; (ii) an aromatic carbonate homopolymer having repeating units comprising chloro- or bromo-substituted dihydric phenol units in combination with an aromatic carbonate homopolymer having repeating dihydric phenol units; or (iii) a combination of (i) with an aromatic carbonate homopolymer having repeating dihydric phenol units, and (c) an antimony-containing compound.
    Type: Grant
    Filed: July 5, 1974
    Date of Patent: February 3, 1976
    Assignee: General Electric Company
    Inventor: Allen D. Wambach