Patents Examined by Beverly K. Johnson
  • Patent number: 4632873
    Abstract: Ultrafine fiber of an ethylene tetrafluoride copolymer having an orientation degree (.pi.) of at least 0.6 and an average fineness of 0.0001 to 0.9 denier. A process for producing such fiber or a porous membrane thereof is also disclosed.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: December 30, 1986
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Toshiya Mizuno, Nobuhiro Moriyama, Naohiro Murayama, Shigeru Saitoh
  • Patent number: 4599267
    Abstract: Polyvinyl alcohol of molecular weight over 500,000 (i.e. 1,500,000 to 2,500,000) is spun as a dilute solution (2-15%) in a relatively non-volatile solvent such as glycerin. The resultant gel fiber is extracted with a volatile solvent such as methanol and dried. Upon stretching at one or more stages during the process, fibers of tenacity above 10 g/denier and modulus above 200 g/denier (e.g. 18 and 450, respectively) are produced.
    Type: Grant
    Filed: January 11, 1984
    Date of Patent: July 8, 1986
    Assignee: Allied Corporation
    Inventors: Young D. Kwon, Sheldon Kavesh, Dusan C. Prevorsek
  • Patent number: 4585696
    Abstract: A superconducting fiber of a superconducting fiber bundle, in which a base layer of a carbide or oxide is applied to the outer surface of a carrier fiber and subsequently a superconducting layer is deposited on the base layer to which the superconducting layer adheres.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: April 29, 1986
    Assignees: Brown, Boveri & Cie AG, Kernforschungszentrum Karlsruhe GmbH
    Inventors: Cord-Heinrich Dustmann, Georg Wahl, Franz Schmaderer, Erich Fitzer, Karl Brennfleck, Manfred Dietrich, Lienhard Paterok
  • Patent number: 4584229
    Abstract: Glazing comprising a support, an interlayer of a polyurethane-polyurea having energy absorbing properties, and an outer layer comprising a material having self-healing properties.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: April 22, 1986
    Assignee: Saint-Gobain Vitrage
    Inventors: Claude Bourelier, Gerard Daude, Roger Orain
  • Patent number: 4581289
    Abstract: Superconducting fiber bundle which contains a multiplicity of carrier fibers such as, for instance, carbon fibers, boron fibers, steel fibers coated with a superconducting layer of a niobium compound of the general formula NbC.sub.x N.sub.y O.sub.
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: April 8, 1986
    Assignees: Brown, Boveri & Cie AG, Kernforschungszentrum Karlsruhe GmbH
    Inventors: Manfred Dietrich, Cord-Heinrich Dustmann, Franz Schmaderer, Georg F. H. Wahl
  • Patent number: 4559268
    Abstract: A filament for brushmaking which is excellent in yield and in bend recovery, and when used in making paintbrushes, can give brushes with good paintability.A filament has a specified cross section having a plurality of cavity of hollow structures, the hollow ratio being 20 to 60% based on the whole cross-sectional area, capable of affording greater yield, ready processability at its end, excellent stiffness and excellent cleanability.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: December 17, 1985
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Nakashima, Atuyoshi Tamura, Yoichi Kanbara, Masaharu Fujii
  • Patent number: 4557972
    Abstract: Improved ultrafine sheath-core composite fibers and composite sheets composed of these fibers are disclosed. The composite fibers have a fineness in the range of 0.0001 to 0.5 denier and a core/sheath weight ratio in the range of 10/90 to 70/30. The core has a very high intrinsic viscosity within a specific range and is located at the center of the sheath. The sheath is composed of a polyester copolymerized with 1.5 to 8 mole % of 5-sodium (or lithium or potassium) sulfoisophthalate, based on the total acid component, of 5-sodium (or lithium or potassium) sulfoisophthalate and having a thickness of 0.04 to 2 microns. The composite fibers have a high strength and are dyeable with a cationic dye. When the composite fibers are combined with an elastic material such as polyurethane, suede-like artificial leathers having excellent softness, touch, feel and color can be obtained.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: December 10, 1985
    Assignee: Toray Industries, Inc.
    Inventors: Miyoshi Okamoto, Hiromichi Iijima, Akito Miyoshi
  • Patent number: 4555439
    Abstract: According to the present invention, rolled sheet-like materials having superior mechanical properties, in particular toughness and high-impact properties, as well as superior heat resistance and showing no whitening can be provided.Such rolled sheet-like materials are manufactured by isotropically rolling sheet-like materials, which were obtained by melting, blending and forming the mixture consisting of thermoplastic resin having the degree of crystallinity of 10% or more of 20 to 90% by weight and flaky fillers of 10 to 80% by weight, to orientate a part of crystals after it was melted at the melting point of said sheet-like materials and then recrystallizing the melted crystals under the rolled condition.
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: November 26, 1985
    Assignee: Kuraray Company, Ltd.
    Inventors: Ryuhei Ueeda, Kiyonobu Fujii, Hiroshi Narukawa
  • Patent number: 4555446
    Abstract: Carbon fiber superior in processability and in physical properties as a composite is obtained by treating carbon fiber with an epoxy resin composition incorporating a polyalkylene ether glycol derivative represented by the following general formula (I) or (II): ##STR1## wherein R.sub.1 is alkylene of C.sub.1 to C.sub.30, R.sub.2 is alkyl of C.sub.1 to C.sub.30, R.sub.3 and R.sub.4 are each hydrogen or methyl, R.sub.5 is glycidyl, X is ether linkage (--O--) or ester linkage ##STR2## m and n are integers of 1 to 20.
    Type: Grant
    Filed: June 28, 1983
    Date of Patent: November 26, 1985
    Assignee: Toray Industries, Incorporated
    Inventors: Atsushi Sumida, Shizuo Watanabe
  • Patent number: 4552433
    Abstract: A cabling machine for making single optical fibre cable with two layers of stranded armid yarn enclosed in a yarn outer wrap which employs a vertical axis for cabling and uses peripheral pay-off of the aramid yarn (34,39) from bobbins 33 mounted on a pair of separately driven turntables (21,22) and peripheral pay-off of the yarn wrap (45) from a spool (44).
    Type: Grant
    Filed: September 21, 1983
    Date of Patent: November 12, 1985
    Assignee: Standard Telephones and Cables, plc
    Inventors: James G. Titchmarsh, Peter G. Hale
  • Patent number: 4548975
    Abstract: Increased resistance to discoloration induced by smog or heat is imparted to a spandex fiber by incorporating within the fiber a phenolic antioxidant and a dialkyl phenyl phosphite in which at least half of the alkyl groups are branched at the alpha position and the phenyl groups are unsubstituted or monoalkyl substituted.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: October 22, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William Lewis
  • Patent number: 4546031
    Abstract: Reinforcing elements comprise a plurality of elongated metallic members, with substantially rectangular cross sections, having parallel longitudinal axes and at least one of the wide sides of each being contiguous with a wide side of another of said elongated metallic members. A single wrap member is helically disposed around the elongated metallic members such that each turn of the wrap filament member is spaced apart from the next adjacent turns of the wrap member. Elastomeric articles reinforced with these reinforcing elements are also disclosed.
    Type: Grant
    Filed: February 7, 1985
    Date of Patent: October 8, 1985
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Jimmy L. Richards
  • Patent number: 4546041
    Abstract: A corona-resistant wire enamel composition is described comprising a polyetherimide resin and from about 1% to about 35% by weight of dispersed alumina particles of a finite size less than about 0.1 micron, the alumina particles being dispersed therein by high shear mixing. A method of providing corona resistant insulations for an electrical conductor employing the above composition and an electrical conductor insulated with a coating of the wire enamel composition are also disclosed.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: October 8, 1985
    Assignee: General Electric Company
    Inventors: John J. Keane, Denis R. Pauze
  • Patent number: 4544603
    Abstract: Reinforcing elements comprise a plurality of elongated metallic members, with substantially rectangular cross sections, having parallel longitudinal axes and at least one of the wide sides of each being contiguous with a wide side of another of said elongated metallic members. A single wrap member is helically disposed around the elongated metallic members such that each turn of the wrap filament member is spaced apart from the next adjacent turns of the wrap member. Elastomeric articles reinforced with these reinforcing elements are also disclosed.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: October 1, 1985
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Jimmy L. Richards
  • Patent number: 4543409
    Abstract: The invention refers to water-insoluble fibers of cellulose acetate cellulose propionate and cellulose butyrate with an extremely high absorptive capacity for water and physiological liquids and to a process for their preparation.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: September 24, 1985
    Assignee: AKZO NV
    Inventors: Michael Diamantoglou, Alexander Brandner, Gerhard Meyer
  • Patent number: 4542065
    Abstract: Treated glass fibers having improved utilization of silane coupling agents are produced which have good strand handling and processing properties and which result in reinforced polymeric materials having good strength properties and good UV color stability. The treated glass fibers having an aqueous treating composition present on a substantial portion of the surface of the glass fibers, wherein the aqueous chemical treating composition has an aqueous dispersion of an internally silylated polyurethane polymer having siliconate anions and one or more dispersing agents in at least an effective dispersing amount, and water in an amount to give a total solids for the aqueous chemical composition for treatment of the glass fibers. The one or more dispersing agents, can be present as external dispersing agents in which case their amounts could be both an effective dispersing amount and an effective lubricating amount.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: September 17, 1985
    Assignee: PPG Industries, Inc.
    Inventor: Peter C. Gaa
  • Patent number: 4535028
    Abstract: A hollow fiber of cuprammonium regenerated cellulose having an axially disposed cylindrical bore extending throughout the fiber length, said bore being filled with a gas. The hollow fiber exhibits an improved dialysis performance and ultrafiltration rate over the conventional hollow fiber. Such a hollow fiber can be produced by a process comprising (a) extruding a spinning dope through an annular orifice while simultaneously injecting a gas into the bore as it is formed, and (b) allowing the fiber extrudate to free fall in an air space and dive into a depth of from 2 to 20 mm below the surface of a coagulation bath only with a downward force gained during said free fall.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: August 13, 1985
    Assignees: Asahi Kasei Kogyo Kabushiki Kaisha, Asahi Medical Co., Ltd.
    Inventors: Masanobu Yokogi, Yoshifumi Sugimoto, Yotsuo Ono
  • Patent number: 4532170
    Abstract: The scuff resistance of a high-pressure laminate is improved by incorporating in or very near the surface thereof, finely divided polyethylene wax preferably having a particle size of about 1-25 microns and a melting point of 220.degree.-230.degree. F. The wax is incorporated as part of a coating mixture applied to the face of an unimpregnated decor paper sheet in an ultra-thin layer, which layer is dried at a temperature below the wax melting point and then impregnated with conventional melamine-formaldehyde resin. The impregnated sheet is placed onto a sheet of convention phenolic resin impregnated core sheets and consolidated in the conventional way under heat and pressure. During consolidation, the wax particles "bloom", or migrate to the surface. The finished laminate surface has greatly improved scuff resistance.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: July 30, 1985
    Assignee: Nevamar Corporation
    Inventors: Robin D. O'Dell, Israel S. Ungar, Herbert I. Scher
  • Patent number: 4532171
    Abstract: Each of the multifibers which are stacked in parallel and compressed together to form a boule during the process of manufacturing microchannel plates is hexagonal in cross-section, and single fibers having thicker channel walls are placed at corners of the hexagon in order to prevent damages to corner fibers which are exposed to the strongest external forces.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: July 30, 1985
    Assignee: Varian Associates, Inc.
    Inventor: John T. Balkwill
  • Patent number: 4526822
    Abstract: Copolyesters of poly(ethylene terephthalate) modified with greater than 10 to about 40 mol % trans-4,4'-stil-benedicarboxylic acid can be melt spun to give as-spun fibers with exceptionally low shrinkage at elevated temperatures and with tensile strengths and moduli equivalent to those of fully oriented poly(ethylene terephthalate). They may be drafted to give fibers with tenacities >8 g/den and moduli >150 g/den. In addition to the unobviously high tenacities and moduli of as-spun fibers, oriented shaped articles, such as films and bottles, of copolyesters of this invention have lower gas permeabilities than poly(ethylene terephthalate). For example, the oxygen permeability of these copolyesters is 25 to 50% lower than that of poly(ethylene terephthalate).
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: July 2, 1985
    Assignee: Eastman Kodak Company
    Inventors: John C. Morris, Winston J. Jackson, Jr.