Patents Represented by Law Firm Hedman, Gibson, Costigan & Hoare
  • Patent number: 5112915
    Abstract: Copolyetherester molding compositions comprising a copolyetherester and a modifying amount of a modulus reducing rubbery interpolymer comprising a crosslinked (meth)acrylate rubbery phase and an interpenetrating, crosslinked styrenic resin phase.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: May 12, 1992
    Assignee: General Electric Company
    Inventors: Thomas A. Morelli, Warren J. Peascoe, Stefan F. Rasch, John A. Tyrell
  • Patent number: 5106908
    Abstract: A multi-stage polyorganosiloxane/polyvinyl-based graft polymer is provided by the co-homopolymerization of organosiloxanes and a vinyl-based monomer (e.g. styrene) and the subsequent graft polymerization of one or more stages of additional (meth)acrylate monomers, vinyl aromatic/(meth)acrylate comonomers or vinyl aromatic/vinyl cyanide/(meth)acrylate termonomers with or without an intermediary stage comprising a polymer.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: April 21, 1992
    Assignee: General Electric Company
    Inventors: Muhanad A. Alsmarraie, Stanley Y. Hobbs, I-chung W. Wang, Vicki H. Watkins
  • Patent number: 5104418
    Abstract: A hybrid diesel fuel composition in the form of a microemulsion stable with time over a wide temperature range comprises a diesel fuel, water, a glycolipid surfactant and an aliphatic alcohol co-surfactant.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: April 14, 1992
    Assignee: Eniricerche S.p.A.
    Inventors: Calogero Genova, Irena Blute, Rosario Pappa
  • Patent number: 5100009
    Abstract: A container-closure system is provided for housing or containerizing a product, which comprises a container body having at least one free end about its perimeter which forms an opening on said container for receiving or discharging said product, and an end portion having a central lid portion and a free end about its perimeter, wherein the end portion is positioned adjacent the container opening such that the container body and end portion free ends are joined together as a seam about the container body opening periphery to join the container end portion to the container body, and to form an annular curled seam projection comprising at least a single curled wall of plastic integral with the container body free end periphery or the end portion free end; and wherein the thus formed annular curled seam projection provides a compressible surface adapted for engaging a cap in sealing arrangement.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: March 31, 1992
    Assignee: Tri-Tech Systems International Inc.
    Inventors: Mortimer S. Thompson, Francis M. Schloss
  • Patent number: 5087662
    Abstract: Thermoplastic molding compositions are provided which comprise polycarbonate resins, polyester resins and polyphenylene ether resins or various combinations thereof modified with a multi-stage polyorganosiloxane/polyvinyl-based graft (meth)acrylate polymer. When the resultant compositions are molded, impact strength, ductility, tendency to agglomerate, rubber dispersion, blend morphology, weld line strength, and thermal stability are improved with no delamination or surface mottling.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: February 11, 1992
    Assignee: General Electric Company
    Inventors: Muhanad A. Alsmarraie, Stanley Y. Hobbs, I-Chung W. Wang, Vicki H. Watkins
  • Patent number: 5085912
    Abstract: Wear resistant floor coverings have a plurality of stud-like inserts which are flush with the underside of the floor covering to prevent against wear and slippage.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: February 4, 1992
    Inventor: Louis Algiere
  • Patent number: 5081833
    Abstract: A device for keeping the annular outlet mouth of the gas volute always centered about the nozzle assembly in a gas turbine, consisting of two diametrically divided retaining rings embracing said annular mouth, the lower half-ring having an inner radius greater than that of the upper half-ring, this latter forming predetermined radial gap with said annular mouth.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: January 21, 1992
    Assignee: Nuovopignone-Industrie Meccaniche e Fonderia S.p.A.
    Inventors: Vasco Mezzedimi, Franco Frosini
  • Patent number: 5081257
    Abstract: New polyoxazolidines can be defined by means of the general formula: ##STR1## wherein R, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 and n have the meaning as reported in the specification. These polyoxazolidines are useful as crosslinking agents for moisture-hardening systems on the basis of polyisocyanates, acrylate polymers and polyepoxides, in compositions for coatings, sealant compositions and adhesive compositions.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: January 14, 1992
    Assignee: Enichem Synthesis S.p.A.
    Inventor: Alberto Greco
  • Patent number: 5079293
    Abstract: Polyphasic resin blends and particularly polycarbonate/polyester blends, are prepared with modifiers comprising combinations of polyorganosiloxane/polyvinyl-based graft copolymer(s), polyorganosiloxane-based graft copolymer(s) and/or diene rubber-based graft copolymer(s), imparting a wide range of physical properties to the blends.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: January 7, 1992
    Assignee: General Electric Company
    Inventors: Muhanad A. Alsamarraie, Stanley Y. Hobbs, I-Chung W. Wang, James L. DeRudder, Vicki H. Watkins, Marinus E. J. Dekkers
  • Patent number: 5076930
    Abstract: A process and apparatus for effecting liquid-liquid contact in a plurality of stages between heavy and light liquid streams is provided wherein said streams are capable of undergoing mass transfer with one another or constituents in either stream are capable of reaction therebetween and where either of said streams can be intercirculated or intracirculated through each stage.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: December 31, 1991
    Assignee: Stone & Webster Engineering Corporation
    Inventor: Jacob N. Rubin
  • Patent number: 5075351
    Abstract: There are provided reinforcing additives, e.g., for polyolefins, comprising (a) a hydrolyzable silane having an ethylenically unsaturated amide substituent and (b) a free radical generator. Also provided is a single step method of using such additives with hydroxyl-containing reinforcements, such as mica to improve processability and physical and thermal resistance properties of reinforced resin compositions.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: December 24, 1991
    Assignee: PCR Group, Inc.
    Inventors: Wallace G. Joslyn, Alfred D. Ulrich, III, Michael E. Wilson
  • Patent number: 5072999
    Abstract: A movable heavy duty voting booth with a structural frame and lightweight panels to accommodate electronic voting mechanisms.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: December 17, 1991
    Assignee: Electronic Voting Systems, Inc.
    Inventors: Frank Trotta, Gary Gray
  • Patent number: 5073416
    Abstract: Articles having acceptable levels of impact strength and physical integrity are provided from mixed scrap plastics by a wet dispersion process. Immiscible plastic particles are locked together by a network of chopped fibers to form a useful article derived from mixed scrap plastics.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: December 17, 1991
    Assignee: General Electric Company
    Inventors: Roger W. Avakian, Shashi L. Parekh, Popkin Shenian, Erich O. Teutsch
  • Patent number: 5070711
    Abstract: This device relates to a circular knitting machine in which the inactivation or activation of a vertical jack standing below each needle is controlled by a horizontal jack. The horizontal jack is located in a radial position relative to a cylinder within a ring structure. This ring structure surrounds and is rigid with the machine cylinder. It contains, in a number equal to the number of needles, radial grooves. The horizontal jacks slide radially in the grooves as well as horizontally. They are selected by electromagnetic retention devices with which each jack is provided and which are mounted on the ring structure. When the devices are energized, they retain the horizontal jacks in their outer position to activate the corresponding needles. When they are not energized, the electromagnetic devices allow the horizontal jacks to return to their inner position by a thrust spring, to leave the corresponding needles in a rest postion.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: December 10, 1991
    Assignee: Savio S.p.A.
    Inventor: Pierangelo Gargiani
  • Patent number: 5072113
    Abstract: In a polarimetric fibre-optic sensor using a polarization-maintaining optical fibre with two light propagation modes, a reference light signal is fed to propagate along the optical fibre in accordance with one propagation mode, a series of measurement light signals being induced by a series of optical fibre deformation elements, to propagate along the optical fibre in accordance with the other propagation mode, each being unbalanced in time with respect to the reference light signal by an amount which is different from that of the other measurement light signals; by using particular interferometric techniques, compensating the unbalances and analyzing the signals resulting from the interference between the measurement light signals and the reference light signal it is possible to determine and locate a physical phenomenon which disturbs the optical fibre.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: December 10, 1991
    Assignee: Centro Informazioni Studi ed Esperienze S.p.A.
    Inventors: Mario Martinelli, Valeria Gusmeroli, Paolo Vavassori
  • Patent number: 5071928
    Abstract: Ethylene homopolymers and ethylene copolymers with alpha-(C.sub.3 -C.sub.10)-olefins are obtained by polymerizing the monomers with a polymerization catalyst formed by:a) an alkyl-aluminum; andb) a modified solid catalyst component obtained by treating with a Lewis' base a non-modified solid component to be defined by means of the following formula, expressed as atomic proportions:Ti(1), hf(0.5-3), Si (1-6), Mg (0.5-15) Al (0.5-15),X (20-60, ROH (1-10)wherein:X represents either chlorine and bromine, andR represents either a linear or branched alkyl radical of from 1 to 6 carbon atoms.The catalyst is particularly useful for controlling the molecular weight and the molecular weight distribution of ethylene hompolymers and copolymers.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: December 10, 1991
    Assignee: Enichem Anic S.p.A.
    Inventors: Francesco Ciardelli, Francesco Masi, Stefano Malquori, Cesare Ferrero, Lia Barazzoni, Francesco Menconi, Angelo Moalli, Renzo Invernizzi
  • Patent number: 5069818
    Abstract: Functionalized polyphenylene ether compositions are provided which are particularly useful for effecting compatibility for a blend of polyphenylene ether resin and a polyamide resin. The functionalized-polyphenylene ether is the reaction product of a polyphenylene ether polymer and a compound having the general formula (i)--Z--(ii), wherein group (i) is a polyphenylene ether-philic moiety such as acyl chloride, group (ii) is a polyamide-philic moiety such as dicarboxylic acid anhydride, and Z is a divalent hydrocarbon radical providing a covalent linkage between groups (i) and (ii). An example of the compound having general formula (i)--Z--(ii) is trimellitic anhydride acid chloride.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: December 3, 1991
    Assignee: General Electric Company
    Inventors: David F. Aycock, Sai-Pei Ting
  • Patent number: 5070155
    Abstract: Semi-aromatic copolyamides and copolyester-amides are obtained by placing an aliphatic polyamide into contact with an aromatic hydroxyacid or aminoacid, by operating at high temperature, under melting conditions, possibly in the presence of a catalyst, with a ratio of the monomer units of aliphatic polyamide to the mols of aromatic hydroxyacid or aminoacid comprised within the range of from 20:1 to 1:1.The semiaromatic copolyamides and copolyester-amides so obtained can display a thermotropic liquid-crystal behaviour as a function of their content of aromatic units linked inside the molecular chain. Their elastic modulus results to be improved relatively to the alifatic polyamides used as the starting product, and the elongation at break results to be decreased.Such semiaromatic polyamides and copolyester-amides can find application in the production of high-stiffness articles, by means of moulding or extrusion processes.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: December 3, 1991
    Assignee: Eniricerche, S.p.A.
    Inventors: Ming-de Liu, Bruno Bresci, Pier L. Magagnini, Nicoletta Maurizi, Ugo Pedretti, Arnaldo Roggero
  • Patent number: 5069565
    Abstract: A portable personal computer printer adapted for printing heavy print media such as tags and label stock by drawing the media vertically through the printer without substantial bending of the media.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: December 3, 1991
    Inventor: Jeffrey Ayd
  • Patent number: 5070062
    Abstract: An oxychlorination catalyst is described which is constituted by porous particles of microspheroidal, or at least microcrystalline, alumina impregnated with cupric chloride and with the chloride of an alkali or alkaline-earth metal, in which the copper and the alklai or alkaline-earth metal are uniformly distributed over the entire surface area of the particles. The method for the preparation of the catalyst is also described. The catalyst enables oxychlorination of ethylene to dichloroethane to be achieved with improved fluodynamic behavior of the fluidized catalytic bed and with improved conversions and selectivity towards the useful reaction product.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: December 3, 1991
    Assignee: Enichem Synthesis S.p.A.
    Inventors: Roberto Canavesi, Ferdinando Ligorati