Patents Examined by Morton Foelak
  • Synthetic aggregate and method of producing the same
    Patent number: 6528547
    Abstract: A synthetic aggregate having a multiplicity of uses such as for mixing with a cementing material to form concrete, mortar or plaster is disclosed. The aggregate includes crushed fragments of a size which are capable of passing through mesh screen having sieve openings ranging from between about 19 mm and 75 microns. The aggregate fragments are made by curing and then crushing a compressed product. The compressed product is made by compressing an aqueous cementitious mixture comprising cement and at least one member selected from the group consisting of bottom ash and non-cementitious fly ash. The compressed product is cured so that it has a compressive strength of at least 600 psi.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: March 4, 2003
    Inventor: David M. Shulman
  • Method for continuous curing of hipe into hipe foams
    Patent number: 6525106
    Abstract: This application relates to flexible, microporous, open-celled polymeric foam materials with physical characteristics that make them suitable for a variety of uses. This application particularly relates to methods particularly suitable for continuously curing high internal phase emulsions to form such foams.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: February 25, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Thomas Allen DesMarais, Thomas Michael Shiveley, John Collins Dyer, Stephen Thomas Dick, Bryn Hird
  • Open-cell particulate foams
    Patent number: 6521672
    Abstract: Open-cell moldable foams are based on a thermoplastic matrix which comprises A. from 99 to 50% by weight of a styrene polymer and B. from 1 to 50% by weight of a polymer of low compatibility with the styrene polymer.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: February 18, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Guiscard Glück, Franz-Josef Dietzen, Klaus Hahn, Gerd Ehrmann
  • Polymer compound, the production and use thereof, and sintered compacts produced therefrom
    Patent number: 6518323
    Abstract: A polymer compound containing a ceramic powder and a polymer is described, the ceramic powder having a specific surface area of more than 1.8·108 m2/m3 and constituting more than 5 vol. % of the polymer compound, the polymer being shear resistant, and the pore sizes in the polymer compound being 3-15 nm. Furthermore, a method for manufacturing this polymer compound, its use, and a sintered body manufactured therefrom are also described.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: February 11, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Scheying, Johannes Kanters, Ingrid Wuehrl, Ulrich Eisele, Horst Boeder, Lutz Dorfmueller, Werner Gruenwald
  • Polyolefin products and process additives therefor having reduced transfer to substrates
    Patent number: 6518320
    Abstract: A process additive for polyolefin films and foams produces products having reduced aging time and reduced greasiness and reduced grease-like transfer as compared to glycerol monostearate (GMS). Carbon dioxide based blowing agents are suitable. The process additive comprises a fatty acid Naliphatic alcohol amide of the general formula R—CON(R′)R″. R is a fatty hydrocarbon radical having from about 8 to 30 carbons. R′ typically is hydrogen. R′ can also be an alkyl radical of from about 1 to 6 carbons or an alkyl alcohol radical of from about 1 to 6 carbons. R″ is an alkyl alcohol fragment of from about 1 to 6 carbons. The alkyl alcohol fragments can be monohydric or polyhydric. Secondary fatty monoalkanolamides in which R′ is hydrogen are particularly useful, especially stearamide monoethanolamine (MEA).
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: February 11, 2003
    Assignee: Sealed Air Corporation (U.S)
    Inventors: Nelson E. Malwitz, Natarajan S. Ramesh
  • Polypropylene base resin composition for foam-molding, foamed article using the same composition, production process for the same foamed article and foam-molded product using the foamed-article
    Patent number: 6515037
    Abstract: A polypropylene base resin composition for foam-molding which use's a propylene•&agr;,&ohgr;-diene base copolymer containing a small amount of &agr;,&ohgr;-diene and obtained by copolymerizing propylene with a specific amount of &agr;,&ohgr;-diene in the presence of a catalyst system for polymerizing olefin comprising a metallocene supported catalyst or a pre-activated metallocene supported catalyst and an organic aluminum compound and which provides a foamed article having uniform and fine foamed cells (bubbles) and a high foaming magnification, a foamable polypropylene base resin composition comprising the propylene•&agr;,&ohgr;-diene base copolymer and a specific amount of a foaming agent, a foamed article obtained by foam-molding the above composition, a production process for the above foamed article and a foam-molded product prepared by heat-molding the above foamed article.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 4, 2003
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Mototake Tsutsui, Hiroyuki Maehara, Kouichi Hatada, Tsutomu Ushioda
  • Polypropylene copolymer foams and their use
    Patent number: 6512019
    Abstract: This invention relates generally to foamable crystalline propylene polymers obtained from metallocene catalysis and to their methods of production. The foamed crystalline propylene polymers have molecular weight distributions and densities that fall within broad ranges. The crystalline propylene polymers may be prepared in a multiple stage polymerization process using a combination of metallocene components in at least two stages.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: January 28, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Pawan Kumar Agarwal, Aspy K. Mehta
  • Titanium dioxide nucleating agent systems for foamable polymer compositions
    Patent number: 6512013
    Abstract: The invention concerns nucleating agent systems for foamable polymer compositions, preferably fluoropolymer resins, having foam cell nucleation sites using titanium dioxide based nucleating agents, and foamable polymers comprising the nucleating agents. The nucleating agent systems comprise TiO2, certain inorganic salts, and, optionally, sulfonic acid salts and/or phosphonic acid salts. The invention also concerns foamable composition concentrates and foamed thermoplastic insulation material comprising fluoropolymer and the nucleating agent systems.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: January 28, 2003
    Assignee: Ausimont USA, Inc.
    Inventor: Jeffrey A. Hrivnak
  • Preparing porous hydrogel products
    Patent number: 6511650
    Abstract: This invention is directed to a new approach to form porous hydrogel materials by first creating gas pockets in the gel and then removing this gas. The removal of the gas creates a porous material, and the initial incorporation of sufficient gas allows one to create a material with an open, interconnected pore structure. Advantageous features of the resulting materials, in addition to their interconnected pore structure, may include that the pore structure is maintained over extended time periods and that the gels maintain a high mechanical integrity that allows seeding with cells and implantation without destruction or compression of the material.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: January 28, 2003
    Assignee: The Regents of the University of Michigan
    Inventors: Petra Eiselt, Craig Halberstadt, David Mooney, Julia Yeh, Rachel Latvala, Jon A. Rowley
  • Process for preparing rigid foamed materials containing urethane groups
    Patent number: 6509387
    Abstract: The description relates to production of rigid foamed plastics containing urethane groups, by use of a blowing-agent mixture containing 5 to 50 parts by weight of C3 and/or C4 alkanes and 50 to 95 parts by weight of cyclopentane. There is also a description of use of the thus-produced rigid foamed plastics as composite components or for foam filling of cavities in refrigerator construction.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: January 21, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl Werner Dietrich, Norbert Eisen, Gerhard Heilig
  • Porous insulating compounds and method for making same
    Patent number: 6509386
    Abstract: A method of forming a porous insulating composition comprising the steps of (A) providing at least one organic sacrificial material/dielectric material composition comprising at least one organic sacrificial material and at least one dielectric material; and (B) removing the at least one organic sacrificial material in the at least one organic sacrificial material/dielectric material composition, in order to generate pores in the at least one dielectric material. Also disclosed is a composition useful in making a porous insulator, comprising a heat-activated, pore-forming, sacrificial material; and a dielectric material. Alternatively, the composition useful in making a porous insulator, comprises at least one pore-forming, organic sacrificial material; and at least one dielectric material, wherein the at least one pore-forming, material is a norbornene-type polymer.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: January 21, 2003
    Assignee: Georgia Tech Research Corporation
    Inventor: Paul A. Kohl
  • Chemical product and method
    Patent number: 6509384
    Abstract: The invention relates to thermally expandable microspheres comprising a thermoplastic polymer shell and a propellant entrapped therein, wherein said polymer shell is made of a homo- or co-polymer from ethylenically unsaturated monomers comprising more than 85 wt % of nitrile containing monomers and said propellant comprises at least 50 wt % of isooctane. The invention further relates to preparation and use of expandable microspheres, a composition comprising expandable microspheres and articles comprising foamed material containing expanded microspheres.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: January 21, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Anna Kron, Peter Sjögren, Odd Bjerke
  • Trauma mitigation and pressure reducing composition
    Patent number: 6509385
    Abstract: This invention provides deformable low density trauma mitigation or pressure reducing composition comprising a viscous fluid and a plurality of macroparticulates and, optionally, microparticulates dispersed within the viscous fluid. The viscous fluid can comprise a water/oil emulsion, a glycerin/water mixture, a plasticizer or the like. In a further embodiment the composition comprises a viscous fluid and an enhancer which is a polytetrafluoroethylene-molybdenum disulfide combination.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: January 21, 2003
    Inventor: Joel L. Sereboff
  • Method of producing rigid foams and products produced therefrom
    Patent number: 6506812
    Abstract: A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate-based foam; (b) a polyol-based foam; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate-based foam and the polyol-based foam; and (d) a blowing agent which comprises a high purity cyclopentane product, wherein the high purity cyclopentane product is about 95% or greater pure cyclopentane, and, optionally, (e) water and/or (f) liquid flame retardant.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: January 14, 2003
    Assignee: Exxon Mobil Chemical Patents Inc
    Inventors: Robert H. Blanpied, James Darryl Thornsberry, Steven E. Silverberg, James R. Lattner, C. Harry McMullen, Leonel E. Sanchez, Tronze-I Dennis Wu
  • Microcellular thermoset foams and method for producing the same
    Patent number: 6506808
    Abstract: Microcellular rigid foams with a matrix consisting of cross-linked duromers, especially of polytriazine resins, and with an apparent density of 20 to 95 percent of the density of the compact matrix material. The rigid foams are highly stable and highly temperature resistant and are suitable for use, e.g., as material for aircraft lining.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: January 14, 2003
    Assignee: Lonza AG
    Inventors: Ulrich Daum, Dietmar Rakutt
  • Titanium dioxide nucleating agent systems for foamable polymer compositions
    Patent number: 6506809
    Abstract: The invention concerns nucleating agent systems for foamable polymer compositions, preferably fluoropolymer resins, having foam cell nucleation sites using titanium dioxide based nucleating agents, and foamable polymers comprising the nucleating agents. The nucleating agent systems comprise TiO2, certain inorganic salts, and, optionally, sulfonic acid salts and/or phosphonic acid salts. The invention also concerns foamable composition concentrates and foamed thermoplastic insulation material comprising fluoropolymer and the nucleating agent systems.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: January 14, 2003
    Assignee: Ausimont USA, Inc.
    Inventor: Jeffrey A. Hrivnak
  • Processes for forming styrene/methyl methacrylate copolymers
    Patent number: 6502621
    Abstract: Copolymers are formed by suspension polymerization of monomers, including one or more styrenic monomers, and methyl methacrylate. The polymerization can be carried out in the presence of one or more blowing agents, producing polymers that can be expanded. The methods are useful, for example, in forming expandable polymeric particles. The expandable polymer particles are useful in processes such as forming patterns for lost foam molding techniques.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: January 7, 2003
    Assignee: StyroChem Delaware, Inc.
    Inventors: Fred Sonnenberg, Vesselin Danailov Miladinov
  • Biomaterials
    Patent number: 6503958
    Abstract: The present invention relates to porous polymers incorporating dihydroperfluoroalkyl acrylates and methacrylates and the like and their production. The invention also relates to the use of polymers derived from dihydroperfluoroalkyl acrylates and methacrylates and like compounds, in both porous and non-porous forms, as substrates for the attachment and growth of mammalian cells and tissue. The invention also relates to the use of polymers derived from dihydroperfluoroalkyl acrylates and methacrylates as components of medical devices and prostheses, including implanted devices.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: January 7, 2003
    Assignee: Novartis AG
    Inventors: Timothy Charles Hughes, Gordon Francis Meijs, Hassan Chaouk, John Gerard Steele, Graham Johnson
  • Heat-resistant polymer foam, process for producing the same, and foam substrate
    Patent number: 6503427
    Abstract: A heat-resistant polymer foam is disclosed which has excellent heat resistance, a fine cellular structure, and a low apparent density. The heat-resistant polymer foam comprises a heat-resistant polymer having a glass transition point of 120° C. or higher, e.g., a polyimide or polyether imide, and has an average cell diameter of from 0.01 &mgr;m to less than 10 &mgr;m. This heat-resistant polymer foam can be produced by, for example, impregnating a heat-resistant polymer under pressure with an non-reactive gas such as carbon dioxide, which is in, e.g., a supercritical state, reducing the pressure, and then heating the polymer at a temperature exceeding 120° C. to foam the polymer.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: January 7, 2003
    Assignee: Nitto Denko Corporation
    Inventors: Takayuki Yamamoto, Amane Mochizuki, Takami Hikita, Tomohiro Taruno, Tomohide Banba, Mitsuhiro Kanada
  • Silicone rubber composition, silicone rubber sponge composition, and silicone rubber-covered wire
    Patent number: 6500874
    Abstract: A silicone rubber composition comprising (A) an organopolysiloxane, (B) an inorganic filler, typically fumed silica, and (C) a specific halogen-free organic peroxide, typically 1,6-bis(p-toluoylperoxycarbonyloxy)hexane or 1,6-bis(benzoylperoxycarbonyloxy)hexane is safe and lends itself to atmospheric hot air vulcanization so that it can be extrusion vulcanized into silicone rubber having satisfactory physical properties without voids or surface tack. The silicone rubber composition is extrusion molded around an electrical wire, constructing a covered wire.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: December 31, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Atsushi Yaginuma, Terukazu Satoh