Patents Examined by Paul R. Michl
  • Patent number: 6743828
    Abstract: A foam reduction agent consisting of dibasic esters is shown and a process using a liquid contact with polystyrene foam wherein the higher boiling temperature of the dibasic esters and contact with the liquid provides a volume reduction process and less evaporation loss as well as safer transportation of the chemicals and the polystyrene in its reduced state. The resulting reduced sludge is also recyclable to superior quality raw polystyrene foam beads and the reduction agents are recoverable for future use. The resulting sludge also has unexpected beneficial uses hereto for unknown as a waterproofing agent.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: June 1, 2004
    Inventors: Harvey Katz, Claudia Iovino
  • Patent number: 6642351
    Abstract: Polymer compositions comprised of small, dry polyacrylamide particles may be dispersed into water at industrially useful rates to form aqueous compositions, by separating the particles from each other and bringing them into contact with a moving stream of water in the manner described herein. The resulting aqueous compositions may be used as a treating solution in diverse applications such as flocculants in water treating, papermaking, mining, oil field, and biotechnological separations.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: November 4, 2003
    Assignee: Cytec Technology Corp.
    Inventors: John Harlukowicz, Morris Lewellyn, Roderick G. Ryles
  • Patent number: 6562889
    Abstract: The present invention provides a stable, non-film-forming dispersion comprising a) dispersed particles, b) a liquid non-polar solvent which is preferably fluorinated, and c) a dispersant selected from the group consisting of highly fluorinated polyethers, having an atomic ratio of carbon to oxygen of between 2 and 4 inclusive, and bearing at least one polar functional group which is preferably an ionizable group such as a carboxylic acid group.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: May 13, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Prabhakara Satyauolu Rao
  • Patent number: 6541557
    Abstract: A resin composite material which allows a polymer phase structure to be controlled is provided. The material comprises a particle 1 having a surface area of not less than 50 m2/g and two or more polymers 21 and 22 or a copolymer comprising two or more segments. The polymers or the copolymer form a phase structure 5 having an unit thickness (t) of 1 to 1000 nm and which is laminated on the surface of the particle. It is preferred that the particle has a needle-like, sheet-like, spherical or cylindrical shape and that the copolymer is a block copolymer or a graft copolymer comprising two or more segments.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: April 1, 2003
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Naoki Hasegawa, Arimitsu Usuki
  • Patent number: 6537574
    Abstract: A permanent, biocompatible material for soft tissue augmentation. The biocompatible material comprises a matrix of smooth, round, finely divided, substantially spherical particles of a biocompatible ceramic material, close to or in contact with each other, which provide a scaffold or lattice for autogenous, three dimensional, randomly oriented, non-scar soft tissue growth at the augmentation site. The augmentation material can be homogeneously suspended in a biocompatible, resorbable lubricious gel carrier comprising a polysaccharide. This serves to improve the delivery of the augmentation material by injection to the tissue site where augmentation is desired. The augmentation material is especially suitable for urethral sphincter augmentation, for treatment of incontinence, for filling soft tissue voids, for creating soft tissue blebs, for the treatment of unilateral vocal cord paralysis, and for mammary implants. It can be injected intradermally, subcutaneously or can be implanted.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: March 25, 2003
    Assignee: BioForm, Inc.
    Inventor: William G. Hubbard
  • Patent number: 6521709
    Abstract: A polyolefin composition comprising from 10 to 95% by weight of a crystalline propylene polymer, A) having an MFR value equal to or lower than 60 g/10 min., and from 5 to 90% by weight of an ultra high molecular weight polyethylene, B) in form of particles having a mean particle size of from 300 to 10 &mgr;m.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: February 18, 2003
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventors: Silvio Pitteri, Miet Willems
  • Patent number: 6521678
    Abstract: A method for preparing organoclays from smectites for use as rheological control agents and in the preparation of nanocomposites. Typically, the clay is dispersed in water, and a substantially monomolecular layer of a water soluble polymer is applied to the surfaces of the clay. A surfactant is also applied to the clay to modify the surface hydrophilic/hydrophobic balance of the clay, and the organoclay is separated out for subsequent use.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: February 18, 2003
    Assignee: Argonne National Laboratory
    Inventor: David J. Chaiko
  • Patent number: 6515067
    Abstract: Herein is disclosed an emulsion, comprising an oxygen scavenging polymer, water, and a surfactant. The emulsion can be formed by first forming an emulsion comprising at least one monomer, water, and the surfactant, and polymerizing the monomer. Once formed, the emulsion can be used to form an oxygen scavenging packaging article by coating at least one surface of the packaging article or contacting two surfaces of the packaging article with the emulsion, and evaporating water from the emulsion-coated or -contacted surface, to form a polymer coating.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: February 4, 2003
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Gangfeng Cai, Ta Yen Ching, Richard Schmidt, Hu Yang
  • Patent number: 6506463
    Abstract: Compositions for scavenging oxygen are disclosed. These compositions comprise copolyamides comprising over 50 weight percent polyamide segments and an active oxygen scavenging amount of polyolefin oligomer segments. The polyamide segments comprise segments derived from typical bottling and packaging polyamides such as polyhexamethyleneadipamide and polyphthalamides. The copolymers are preferably formed by transesterification during reactive extrusion and typically comprise about 0.5 to about 12 wt. % of polyolefin oligomer segments. The copolyamides provide enhanced active and passive oxygen barrier properties over similar polyester constructions and similar polyamide constructions, when used in a laminar construction. In a series of preferred embodiments, multi-layered bottles fabricated with the oxygen scavenging copolyatnides of this invention are about 99.8 wt. % polyamide and suitable for recycle with other polyamide bottles.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: January 14, 2003
    Assignee: BP Corporation North America Inc.
    Inventors: Paul J. Cahill, Joel Albert Richardson, Raymond V. Wass
  • Patent number: 6500883
    Abstract: Fillers surface-modified by treatment with an organosilane- and/or organosiloxane-containing agent for preparing filled polyamide compositions.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: December 31, 2002
    Assignee: Degussa AG
    Inventors: Helmut Mack, Peter Jenkner, Roland Edelmann, Dieter Barfurth, Alber-Johannes Frings, Burkhard Standke, Jaroslaw Monkiewicz, Michael Horn, Thomas Schlosser
  • Patent number: 6489386
    Abstract: A polymer composition and method for reducing the permeability of gases through molded polymeric containers and films by incorporating into the polymer from which the container or film is formed an effective amount of a barrier-enhancing additive, such as monoesters of hydroxybenzoic acid and hydroxynaphthoic acid.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: December 3, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Irene Greenwald Plotzker, Thomas Michael Ford, Kenneth George Sharp, Samuel Tacitus D'Arcangelis
  • Patent number: 6489404
    Abstract: The above described deficiencies and drawbacks are overcome by the process for making poly(arylene ether)-polyamide compositions which comprise about 10 weight percent (wt %) to about 90 wt % poly(arylene ether), about 90 wt % to about 10 wt % polyamide, about 0.01 wt % to about 10 wt % compatibility modifier, and optionally other additives known in the art. The process comprises several components which can be employed singly or in combination, namely: utilizing resins and additives that are substantially free of gaseous oxygen (air-free; e.g. less than about 1.0 vol % oxygen preferred, and less than about 0.5 vol % oxygen especially preferred, and less than about 0.05 vol % especially preferred); melting and compounding under an atmosphere which is substantially air-free; adding up to 20 wt % of polyamide to the poly(arylene ether) before compounding; when employing an extruder with an atmospheric vent, operating with the atmospheric vent open; and performing the injection molding under an inert atmosphere.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: December 3, 2002
    Assignee: General Electric Company
    Inventors: Piet J Bolluijt, Jasper R. Bouma, Herve Cartier, Ulrich Hofmann, Jan P. H. Keulen, Christiaan Henricus Koevoets, Eric Reitjens, Peter O. Stahl, Geert Tamboer, Werner Woerhle
  • Patent number: 6486233
    Abstract: During the application of heat the intumescent coating is transformed into a swollen char material, which acts as a thermal barrier to eliminate or minimize incoming heat flux. It also acts as a mass transfer barrier, inhibiting oxygen from reaching the thermally insulative ablative material. During the intumescence process, the swollen material will also back fill into interstices within the ablative material and char to enhance their strength. The intumescent coating also acts as a moisture barrier to protect the thermally insulative ablative material from ambient elements such as moisture.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: November 26, 2002
    Assignee: The Boeing Company
    Inventors: Jim L. Wong, George P. Johnson
  • Patent number: 6479575
    Abstract: Conductive polymer blend composites exhibiting PTC (positive temperature coefficient of resistance) behavior, comprising at least two types of polymers and preferably at least two types of conductive particulate materials (e.g., carbon blacks), and electrical devices containing such composites. The two polymers are selected to have different melt flow index values, while the two particulate materials are selected to have different average particle sizes and DBP values.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: November 12, 2002
    Assignee: Polytronics Technology Corporation
    Inventors: Fu-Hua Chu, Yun-Ching Ma
  • Patent number: 6479566
    Abstract: The invention relates to an antifouling paint having a binder comprising a rosin material and an auxiliary film-forming resin, the paint including an ingredient having marine biocide properties, wherein the binder comprises a blend of the rosin material and an auxiliary film-forming resin in ratio 20:80 to 95:5% by weight, the auxiliary film-forming resin comprising 20-100% by weight of an acid-functional film forming polymer (A) whose acid groups are blocked by groups capable of hydrolyzing, dissociating or exchanging with seawater species to leave a polymer soluble in seawater, the blocking groups being selected from quaternary ammonium groups which form a quaternary ammonium salt of the polymer and quaternary phosphonium groups which form a quaternary phosphonium salt of the polymer, and 80-20% of a non-hydrolyzing water-insoluble film-forming polymer (B).
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: November 12, 2002
    Assignee: International Coatings Limited
    Inventors: Robert Lines, Alistair Andrew Finnie, John Fox
  • Patent number: 6479577
    Abstract: Aqueous dispersions of mixtures of (a) polyurethanes having hydrophilic groups which result in water dispersibility of the polyurethane and (b) radiation-curable (meth)acrylate prepolymers which are dilutable in at least 5% by weight of water, such as hydroxyl-containing polyether acrylates, are suitable, owing to their penetration behavior and their high solids absorption in paper, for use as radiation-curable coating or impregnating materials for paper substrates.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: November 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Paulus, Wolfgang Reich, Matthias Lokai, Thomas Jaworek
  • Patent number: 6476116
    Abstract: Resin composition and precision sliding parts are proposed. The resin composition includes a modified polyphenylene ether resin as a main component, a fibrous reinforcing agent, and a solid lubricant comprising tetrafluoroethyelene and graphite in the amount of 2-30 volume %. The modified polyphenylene ether resin is prepared by blending a polystyrene-family resin with a polyphenylele ether resin. The ratio of the tetrafluoroethylene resin and the graphite is 1:1 to 1:5. The fibrous reinforcing agent is glass fiber or carbon fiber. The fibrous reinforcing material is orientated such that the angle of fiber axis is not more than 30 degrees with respect to the sliding surface. The fibrous reinforcing material is a fibrous reinforcing material having a fiber diameter of 10 &mgr;m or less.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: November 5, 2002
    Assignee: NTN Corporation
    Inventors: Masaki Egami, Takuya Ishii, Eiichiro Shimazu
  • Patent number: 6476112
    Abstract: Calcium-iron oxide composite particles of the present invention have a BET specific surface area of 1 to 100 m2/g and containing iron atom in an amount of 1 to 50 moles based on 100 moles of calcium atom, the iron atom of not less than 50% based on the total amount of iron atom contained in said calcium-iron oxide composite particles being bonded with calcium atom for forming a calcium-iron ferrite phase. A hydrogen chloride-scavenger comprising the calcium-iron oxide composite particles, is capable of effectively capturing harmful hydrogen chloride generated by thermal decomposition or combustion of chorine-containing resin molded products upon fire or incineration thereof, and fixing the hydrogen chloride as stable calcium chloride or the like.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: November 5, 2002
    Assignee: Toda Kogyo Corporation
    Inventors: Toshiki Matsui, Masaru Isoai, Yasuhiko Fujii, Satoshi Hatakeyama, Tomoko Okita, Tomoyuki Imai
  • Patent number: 6476106
    Abstract: Provided is a polyarylene sulfide resin composition for sealing electronic parts, which comprises (A) from 20 to 35% by weight of a polyarylene sulfide resin, (B) from 60 to 75% by weight of silica, and (C) from 1 to 10% by weight of an elastomer, and contains (D) from 0.05 to 1.2 parts by weight of an epoxysilane and/or (E) from 0.1 to 3 parts by weight of an epoxy resin, both relative to 100 parts by weight of the total amount of the components (A), (B) and (C). The composition has good PCT and TCT acceptable quality and good fluidity, naturally having good properties intrinsic to ordinary PAS resin, and which, when used for sealing electronic parts, causes neither deformation of bonding wires and other elements nor package breakdown, and is therefore favorable to materials for sealing electronic parts.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: November 5, 2002
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Tomoyoshi Murakami, Yutaka Tsubokura, Shigemasa Suzuki, Satoru Kinouchi
  • Patent number: 6476114
    Abstract: The invention provides a method of making a film comprising the steps of: (A) providing a film comprising a layer of thermoplastic polymer having dispersed therein a fluorochemical hydrophilicity imparting compound according to the formula: Rf—Q—Z—X—T, wherein Rf represents a partially or fully fluorinated aliphatic group having at least 3 carbon atoms, Q is a linking group or a covalent bond, Z is a poly(oxyalkylene) group, X is an oxygen atom or NR wherein R is a hydrogen atom or an alkyl or aryl group, and T is a hydrogen atom or an organic group having no more than 6 carbon atoms; (B) applying a coating comprising at least one non-volatile component on said film; and (C) when said coating contains volatile components, drying said coating to remove said volatile components from said coating. Further provided are single- and multi-layer films.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: November 5, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Bart Goeman, Rolf D. Spielmann