Patents Represented by Attorney William H. Pittman

Find this attorney in the Justia Lawyer Directory

  • Method for making thermoplastic silicone-polyphenylene ether block copolymers and block copolymer blends and products obtained therefrom
    Patent number: 5357022
    Abstract: An oxidative coupling method is provided using a diorganophenol such as 2,6-xylenol and a silicone macromer having terminal phenol groups such as the hydrosilylation reaction product of eugenol. Thermoplastic polymeric products such as silicone-polyphenylene ether block copolymers, which can be flame retardant, as well as blends thereof with thermoplastic polymers, such as polyphenylene ether, also are provided.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: October 18, 1994
    Assignee: General Electric Company
    Inventors: Timothy E. Banach, Margaret L. Blohm, Kevin M. Snow
  • Free standing diamond sheet and method and apparatus for making same
    Patent number: 5349922
    Abstract: The bond strength between a diamond and the substrate onto which it is deposited by the chemical vaporization method is decreased to the point where the diamond can be removed from the substrate as a free standing monolithic sheet. The bond strength can be decreased by polishing the substrate, removing corners from the substrate, slow cooling of the substrate after deposition, an intermediate temperature delay in cooling or the application or formation of an intermediate layer between the diamond and the substrate. The free standing sheet of diamond can be used as a laser lens, metallized to form a mirror, or silver soldered to tungsten carbide to form a cutting tool.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: September 27, 1994
    Assignee: General Electric Company
    Inventors: Thomas R. Anthony, James F. Fleischer
  • Heat curable primerless silicone hardcoat compositions, and thermoplastic composites
    Patent number: 5349002
    Abstract: A primerless silicone hardcoat composition is provided which utilizes polycaprolactone polyol as an adhesion promoter in combination with silicone hardcoat ingredients,
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: September 20, 1994
    Assignee: General Electric Company
    Inventor: Gautam A. Patel
  • Process for making thermoplastic polyester foams
    Patent number: 5348985
    Abstract: A process for making thermoplastic polyester foams comprises the steps of subjecting macrocyclic polyester oligomer precursors to initiators and blowing agents at a constant operating temperature in order to produce foams which unexpectedly display low foam densities.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: September 20, 1994
    Assignee: General Electric Company
    Inventors: Eric J. Pearce, John W. Carbone
  • Core-shell ABS copolymers and method for their preparation
    Patent number: 5346953
    Abstract: Core-shell ABS copolymers having an SAN shell completely surrounding the diene core are provided by melt blending an aliphatic diene polymer with an SAN copolymer, said copolymer containing functional groups capable of reacting with the diene polymer. For example, the SAN copolymer may contain azide groups capable of reacting with the olefinic groups in the diene polymer, or both the SAN copolymer and the diene polymer may contain other functional groups capable of interreaction, such as acidic (e.g., maleic anhydride) groups in the diene and epoxy (e.g., glycidyl methacrylate) groups in the SAN copolymer.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: September 13, 1994
    Assignee: General Electric Company
    Inventors: James J. Scobbo, Jr., Gregory J. Stoddard
  • 1,3-bis(4-hydroxyphenyl)-1,3-dialkylcyclohexanes and polycarbonates prepared therefrom
    Patent number: 5344999
    Abstract: 1,3-Bis(4-hydroxyphenyl)-1,3-dialkylcyclohexanes, as illustrated by 1,3-bis(4-hydroxyphenyl)-1, 3-dimethylcyclohexane, may be prepared by the reaction of phenol with a 1,5-dialkyl-1,4-cyclohexadiene under acidic conditions. Polycarbonates prepared therefrom have high glass transition temperatures and are expected to be ductile.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: September 6, 1994
    Assignee: General Electric Company
    Inventor: John C. Schmidhauser
  • Addition-curable silicone adhesive compositions, and bis(trialkoxysilylalkyleneoxy-carbonylalkylene) amine adhesion promoters
    Patent number: 5342870
    Abstract: Addition-curable platinum group metal catalyzed silicone compositions are provided which utilize a bis(trialkoxysilylalkyleneoxycarbonylalkylene)amine adhesion promoter, such as NH[CH.sub.2 CH.sub.2 C(O)OCH.sub.2 CH.sub.2 CH.sub.2 Si(OCH.sub.3).sub.3 ].sub.2. Cohesive bonding is effected on both plastic and metal substrates at temperatures of 100.degree. C. or less and in 1 hour or less.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: August 30, 1994
    Assignee: General Electric Company
    Inventors: Judith Stein, Joseph A. King, Jr., Andrew J. Caruso
  • Method for making fumed silica having a reduced aggregate size and product
    Patent number: 5340560
    Abstract: A method is provided for making fumed silica aggregate having an average convex perimeter in the range of about 0.12 micron to about 0.6 micron based on the combustion of a mixture of a silicon compound, such as an organosilane, an oxygen containing gas, such as air and a fuel such as hydrogen. The fumed silica aggregate has been found to enhance properties in heat curable filled silicone compositions.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: August 23, 1994
    Assignee: General Electric Company
    Inventors: Donald F. Rohr, Stanlee T. Buddle, Paul R. Wilson, Michael A. Zumbrum
  • Method for salvaging organic thermoplastic values from discarded surface treated organic thermoplastic substrates
    Patent number: 5340839
    Abstract: A method is provided for salvaging organic thermoplastic values from discarded shaped organic thermoplastic substrate which has been surface treated with a protective or decorative organic coating can be salvaged and recycled. The discarded shaped organic thermoplastic substrate, such as a polycarbonate substrate can be granulated, treated with an aqueous alkaline solution which can contain a water miscible organic solvent, such as methanol and thereafter washed until neutral and dried.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: August 23, 1994
    Assignee: General Electric Company
    Inventors: Gregory R. Gillette, Popkin Shenian, Donald A. Bolon, Patricia C. Irwin
  • Synthesis of aromatic heterocyclic polymers from a biosynthetically prepared precursor
    Patent number: 5340913
    Abstract: 2,4-Polybenzoxazoles are synthesized from a biosynthetically prepared AB monomer. The biosynthetically produced precursor, 2,3-dihydro-3-hydroxyanthranilic acid (DHAA), is chemically transformed to the AB monomer, 3-hydroxyanthranilic acid (HAA). This AB monomer is used to prepare said polybenzoxazoles.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: August 23, 1994
    Assignee: General Electric Company
    Inventor: Thomas J. Meade
  • Method for depositing conductive metal traces on diamond
    Patent number: 5336368
    Abstract: Adherent traces of a carbide-forming conductive metal are produced on a diamond surface, without deposition of carbide in areas to be non-conductive, by depositing an undercoat layer of a non-carbide-forming metal such as palladium, patterning said undercoat layer and then depositing a bond layer of the carbide-forming metal. The undercoat layer and the portion of the bond layer deposited thereon are then removed, typically by etching.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: August 9, 1994
    Assignee: General Electric Company
    Inventors: Charles D. Iacovangelo, Elihu C. Jerabek, Bradley E. Williams
  • Luminescent compositions and structures incorporating them
    Patent number: 5336449
    Abstract: Phosphorescent compounds of the formula M.sub.2 AOF.sub.5, wherein M is potassium, rubidium or cesium and A is tantalum or niobium, are prepared by the reaction of the appropriate alkali metal fluoride with niobium or tantalum pentoxide in aqueous hydrofluoric acid solution. They have no electrons in the d orbitals of the ground state, and therefore are useful in applications requiring phosphors with short primary decay times.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: August 9, 1994
    Assignee: General Electric Company
    Inventor: John F. Ackerman
  • Method for recovering bis hydroxy aromatic organic values and bis aryl carbonate values from scrap aromatic polycarbonate
    Patent number: 5336814
    Abstract: A method is provided for depolymerizing scrap aromatic polycarbonate to salvage component monomers by initially effecting aromatic polycarbonate depolymerization by basic phenolysis to produce a mixture having dihydric phenol, and diarylcarbonate. Recovery of the dihydric phenol is effected by distillation of a crystalline dihydric phenol/phenol adduct. Diarylcarbonate is recovered by distillation of the resulting mother liquor after carboxylic acid treatment.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: August 9, 1994
    Assignee: General Electric Company
    Inventor: Sheldon J. Shafer
  • Aromatic polymer blends and method
    Patent number: 5334672
    Abstract: Flame retardant blends of poly(aryloxysiloxane) and organic polymers such as polyethers, polyesters, polyetherimides and terpolymers of acrylonitrile-butadiene-styrene are provided. In many instances, the flame retardant blends exhibit improved chemical resistance, impact resistance and have an improved heat deflection temperature as compared to the original polymeric materials.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: August 2, 1994
    Assignee: General Electric Company
    Inventors: Therese C. Jordan, Jimmy L. Webb
  • Suppression of graphite formation during laser etching of diamond
    Patent number: 5334280
    Abstract: Graphite formation on a diamond surface during laser etching is inhibited or the graphite is removed by contact with a gaseous material such as elemental hydrogen, elemental oxygen, an inert gas or a source of hydroxyl radicals. Preferably, the article being etched is cooled and maintained in an inert atmosphere during etching.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: August 2, 1994
    Assignee: General Electric Company
    Inventors: Thomas R. Anthony, James F. Fleischer
  • Elastomeric blends and method for their preparation
    Patent number: 5334659
    Abstract: Copolymer compositions useful as impact modifiers are prepared by blending, under reactive conditions, at least one functionalized addition polymer with an excess of at least one functionalized elastomer reactive therewith to form a preblend, and subsequently blending said preblend, under reactive conditions, with a further amount of at least one functionalized addition polymer. The preferred addition polymers and elastomers are carbamate-functionalized styrene-acrylonitrile copolymers and maleic anhydride-grafted EPDM elastomers, respectively. The product of the two-step blending operation is a composition comprising a continuous addition polymer phase and elastomer particles dispersed therein, said elastomer particles containing occluded addition polymer. Said composition is stabilized by copolymer formation between the elastomer particles and the addition polymer.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: August 2, 1994
    Assignee: General Electric Company
    Inventors: James J. Scobbo, Jr., Gregory J. Stoddard
  • Deuterated organic salts useful in nonlinear optical applications
    Patent number: 5332827
    Abstract: Deuterated organic salts useful in nonlinear optical applications are disclosed herein. More particularly, optoelectronic devices and systems are prepared from said deuterated organic salts and the preferred salt is perdeuterated 4'-dimethylamino-4-methylstilbazolium p-toluenesulfonate.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: July 26, 1994
    Assignee: General Electric Company
    Inventors: Kevin R. Stewart, Eugene P. Boden, Christopher P. Yakymyshyn
  • Method for making a spacer element for a multi-pane sealed window
    Patent number: 5332538
    Abstract: A method is provided for making a rigid spacer, containing a silicone bound desiccant which is useful for a multi-pane sealed window. An infrared radiation curable silicone is used as a binder for a desiccant such as a zeolite which is injected in a continuous manner into a U-shaped or V-shaped semi-rigid spacer such as a steel channel.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: July 26, 1994
    Assignee: General Electric Company
    Inventors: Lionel M. Levinson, William N. Schultz, Larry N. Lewis, Chris A. Sumpter, Judith Stein, Michael A. Zumbrum
  • Heat curable organopolysiloxane compositions, preformed latent platinum catalysts, and methods for making
    Patent number: 5331075
    Abstract: Heat curable organopolysiloxane compositions are provided utilizing a vinyl silicone organopolysiloxane fluid, a silicon hydride siloxane and an effective amount of a preformed latent platinum catalyst resulting from the reaction in the substantial absence of organopolysiloxane fluid, between a zero valent platinum catalyst and an organic nitrogen compound, such as 2,2'-bipyridine or diethyl azodicarboxylate.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: July 19, 1994
    Assignee: General Electric Company
    Inventors: Chris A. Sumpter, Larry N. Lewis, William B. Lawrence
  • Process for making metallized vias in diamond substrates
    Patent number: 5328715
    Abstract: A process for making metallized vias in diamond substrates is disclosed. The process involves laser-drilling a plurality of holes in a CVD diamond substrate and depositing tungsten, or a similar refractory metal, in the holes by low pressure CVD to provide substantially void-free metallized vias. Diamond substrates having metallized vias are also disclosed. The structures are useful for making multichip modules for high clock rate computers.
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: July 12, 1994
    Assignee: General Electric Company
    Inventors: Charles D. Iacovangelo, Elihu C. Jerabek, Ronald H. Wilson, Peter C. Schaefer