Patents Examined by Lorraine T. Kendell
  • Patent number: 5180630
    Abstract: This invention relates to fibrillated fibers having particular physical characteristics, articles made therefrom as well as methods of producing the same. In particular the fibrillated fibers are defined by their Canadian Standard Freeness in combination with their Tensile Strength when formed into a sheet.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: January 19, 1993
    Assignee: American Cyanamid Company
    Inventor: Robert D. Giglia
  • Patent number: 5168004
    Abstract: An acrylic multifilamentary material possessing an internal structure which is particularly suited for thermal conversion to high strength carbon fibers is formed via a specifically defined combination of processing conditions. The acrylic polymer while in substantially homogeneous admixture with appropriate concentrations (as defined) of acetonitrile and water is melt extruded and is drawn at a relatively low draw ratio which is substantially less than the maximum draw ratio achievable. This fibrous material which is capable of readily undergoing drawing is passed through a heat treatment zone wherein the evolution of residual acetonitrile and water takes place. The resulting fibrous material following such heat treatment is subjected to additional drawing to accomplish further orientation and internal structure modification and to produce a fibrous material of the appropriate denier for carbon fiber production.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: December 1, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Gene P. Daumit, Yoon S. Ko, Christopher R. Slater, Jozef G. Venner, Chi C. Young
  • Patent number: 5160789
    Abstract: Disclosed is a fiber comprising, chemically bonded together, (a) a conventional cellulosic fiber, such as a Kraft fiber or a chemithermomechanical pulp fiber; (b) poly(acrylate-co-itaconate), such as the acid form of a poly(acrylate-co-itaconate) comprising 90-95 mole % acrylate and 5-10 mole % itaconate having weight average molecular weight of about 600,000-900,000; and (c) a polyol, such as polyethylene glycol; also disclosed are methods for making such fibers, especially evaporatively depositing an intimate mixture of the copolymer and polyol on the fiber followed by thermally crosslinking at specific temperatures for limited periods; absorbent paper which can be made by wet-laying the fiber, especially in admixture with conventional fiber; and derivative paper structures, such as multi-ply disposable absorbent towels.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: November 3, 1992
    Assignee: The Procter & Gamble Co.
    Inventors: Robert L. Barcus, David W. Bjorkquist
  • Patent number: 5147704
    Abstract: A process wherein freshly-spun, undrawn, nonconductive filaments are combined with one or more spin-oriented, conductive filaments having a nonconductive component made from a major portion of nonconductive, fiber-forming polymeric material and a minor amount of polystyrene, the combined fibers being drawn and co-bulked to produce an anti-static yarn. The conductive filaments used in this process have higher elongations to break, and carpets tufted from the yarns of the process show improved anti-static properties.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: September 15, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Perry H. Lin
  • Patent number: 5143786
    Abstract: The present invention uses, as a base material, a multi-layer film comprising more than two layers and formed from thermoplastic resins different in melting point from one another. A sectional construction of the multi-layer film or a tape obtained from the multi-layer film is applied to a sectional construction of a fibre without modification, the multi-layer film or tape being formed into the fibre. The invention provides a composite fibre which is much more excellent as compared to a conventional heat adhesive composite fibre by melt spinning, a water-absorbing material using the composite fibre as a base material and a method for the production of the same by the stated simple means.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: September 1, 1992
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Toyoaki Tanaka, Akira Nakamura, Yoshisuke Kamei, Akihiro Hashimoto
  • Patent number: 5141805
    Abstract: The cushion material according to the invention is prepared by mixing(A) polyester fibers having a fineness of 4 to 30 denier and a cut length of 25 to 150 mm with(B) core-sheath type conjugated fibers having a fineness of 2 to 20 denier and a cut length of 25 to 76 mm in a weight ratio of 95.about.40:5.about.60, the sheath component of said conjugated fibers having a melting point lower than that of the core component of said conjugated fibers and said polyester fibers with a difference of 30.degree. C. or more. In the cushion material, cubically and continuously interconnected portions of the fibers are adhered by fusion of the sheath portion of the above core-sheath type conjugated fibers.The cushion material having a thickness of 10 cm or more and a good quality can be stably prepared by combining far-infrared ray or hot air flow heating and steaming in the heat-treatment.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: August 25, 1992
    Assignee: Kanebo Ltd.
    Inventors: Saburo Nohara, Yugoro Masuda
  • Patent number: 5141812
    Abstract: Central is a nonstretchable, high strength thread that extends transverse to stretching, either of individual heat recoverable strands or of an embedding layer. The thread is either placed across plural heat recoverable strands, or plural threads are individually wrapped around the strands, or there is a plurality of helices on thermoplastic strings in a heat recoverable embedment, with further transverse high strength threads being interwoven with the helices.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: August 25, 1992
    Assignee: Kabelmetal-Electro GmbH
    Inventors: Karl-Heinz Marx, Franz Grajewski
  • Patent number: 5136679
    Abstract: The invention relates to an optical glass fibre 1 having a synthetic resin coating which consists of at least two layers 2 and 3 in which the first layer 2 is formed from an elastomer forming material which can be cured by exposure to actinic radiation, and in which the optical glass fibre exhibits a great tensile strength, a small risk of static fatigue fracture and a low ageing rate, owing to the fact that the synthetic resin composition comprises between 0.1 and 5% by weight of one or more phosphorus compounds of the following structural formula: ##STR1## wherein n has a value of 1 or 2 and wherein R represents an organic group, preferably an organic group which co-reacts during curing of the elastomer forming material and is built into the polymeric network thus formed.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: August 4, 1992
    Assignee: U.S. Philips Corp.
    Inventors: Dirk J. Broer, Petrus C. P. Bouten, Cornelis M. G. Jochem
  • Patent number: 5135811
    Abstract: Polyamide yarn provided with a built-in antimicrobial capacity characterized by the adhesive on the fiber surface of an antimicrobial agent comprising an organosilicon quaternary ammonium salt and a surfactant comprising an alkyl-, aryl-, alkenyl-, or arylsulfonate salt, optionally with the presence of a level-dyeing promoter.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: August 4, 1992
    Assignee: Dow Corning Corporation
    Inventors: William C. White, Yukio Yamahara, Koji Tajiri
  • Patent number: 5130193
    Abstract: A fiber-reinforced composite material is disclosed for use as a cable which comprises a master filament and a plurality of slave filaments disposed in surrounding relation thereto, both filaments being impregnated with a resin and thereafter coated by a knitted fiber web. The filaments are formed of a fibrous material of a selected class and have their respective tensile strength, elongation and moduli specified to achieve a desired cable quality.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: July 14, 1992
    Assignee: Nippon Oil Co., Ltd.
    Inventor: Tetsufumi Ikeda
  • Patent number: 5130195
    Abstract: An acrylic fiber tow is disclosed which comprises 1) monocomponent filaments of each of two acrylonitrile polymers differing in hydrophilic properties, 2) bicomponent filaments of both of said polymers having one interface between polymers components and 3) bicomponent filaments of both of said polymers having more than one interface between polymer components. This fiber, however, in spite of its composition of numerous filaments of differing structure provides a tow bundle having a desirable level of reversible crimp measured in a manner specific to the type of crimp designated.Also disclosed is a method for wet-spinning the novel fiber using a static mixing unit in conjunction with a spinnerette normally used for wet-spinning monocomponent filaments.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: July 14, 1992
    Assignee: American Cyanamid Company
    Inventors: Spero Sampanis, Ronald E. Pfeiffer, Francesco De Maria, William E. Streetman, Maurice M. Zwick
  • Patent number: 5130197
    Abstract: Glass fibers are prepared with a chemical treatment resulting in chemically treated glass fibers having utility in reinforcing thermoplastic polymers such as polyolefins. The chemically treated glass fibers have a dried residue of an aqueous chemical treating composition having one or more amino organo coupling agents, an aqueous emulsion of an acid or anhydride modified polyolefin having one or more surfactants, wherein the polyolefin is neutralized with an organic or inorganic base with a basicity less than the basicity of the amino moiety of the coupling agent, a binder stabilizer, one or more film forming polymers, and water. The aqueous chemical treating composition is essentially free of cationic lubricants that are amidated fatty acids and polyvinyl acetate homopolymer.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: July 14, 1992
    Assignee: PPG Industries, Inc.
    Inventor: Chester S. Temple
  • Patent number: 5126200
    Abstract: Small diameter fibers formed from the use of laser energy and gaseous reactants and are disclosed. Also disclosed is an apparatus and method for the formation of continuous, substrate free, crystalline or amorphous fibers. Materials which can be formed into small diameter fibers include boron, silicon, germanium, zinc, tungsten, cadium, gallium, thenium, and compounds and mixtures thereof. The fibers have a diameter of about 10 micrometers to about 170 micrometers. The apparatus for producing the fibers includes a laser, a reaction chamber, and gas supply means. The laser beam has a focal point adjusted to coincide with the tip of the growing fiber, the focal point of the laser creating a region of elevated temperature at the fiber tip.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: June 30, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Paul C. Nordine
  • Patent number: 5124206
    Abstract: An electrically insulated cable uses an insulator comprised of an ethylene-vinyl acetate copolymer and an ethylene-.alpha.-olefin copolymer having a density of 0.91 or more. An electrically insulated cable also uses as an insulator a cross-linked composition made of an ethylene-vinyl acetate copolymer and an ethylene-.alpha.-olefin copolymer.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: June 23, 1992
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hironaga Matsubara, Shosuke Yamanouchi, Yoshiyuki Inoue, Katsuhiro Hosoe
  • Patent number: 5124205
    Abstract: Disclosed is a novel ink reservoir containing a polyester fiber, such as a poly(ethylene terephthalate) fiber, having at least one continuous groove. The surface of the groove of the fiber is preferably rougher than the surface outside the groove. The ink reservoirs are useful for use with aqueous inks and have improved ink transport properties.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: June 23, 1992
    Assignee: Eastman Kodak Company
    Inventors: Peter W. Raynolds, Shriram Bagrodia
  • Patent number: 5116681
    Abstract: A process wherein freshly-spun, undrawn, nonconductive filaments are combined with one or more spin-oriented, conductive filaments having a nonconductive component made from a major portion of nonconductive, fiber-forming polymeric material and a minor amount of polystyrene, the combined fibers being drawn and co-bulked to produce an anti-static yarn. The conductive filaments used in this process have higher elongations to break, and carpets tufted from the yarns of the process show improved anti-static properties.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: May 26, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Perry H. Lin
  • Patent number: 5116668
    Abstract: This invention provides a hybrid yarn obtained by combining the filaments of a carbon fiber and a specific inorganic fiber composed substantially of elements Si, Ti or Zr, C and O having a ratio of tensile modulus of the inorganic fiber to tensile modulus of the carbon fiber in the range of from 0.6 to 1.4. Further, this invention provides a unidirectional prepreg obtained by unidirectionally arranging the hybrid yarn prepared from a carbon fiber and a specific inorganic fiber and impregnated with a thermosetting resin, and provides a laminated material obtained by laminating the prepregs.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: May 26, 1992
    Assignee: Ube Industries, Ltd.
    Inventors: Shinji Yamamoto, Hideho Tanaka, Fumio Adachi, Hisataka Uchimura
  • Patent number: 5114769
    Abstract: Disclosed is a resin mold clutch facing integrally heat molded out of a resin mold base member and a reinforcement member. The resin mold base member comprises a matrix composed of a glass fiber and an aromatic polyamide fiber, an inorganic filler, a solid lubricant, and a resin. The reinforcement member comprises a matrix composed of a glass strand or yarn and at least one strand or yarn selected from a group of rayon and an aromatic polyamide strand or yarn and a binder adhered to said matrix, and is shaped in a spirally wound configuration. Thus the weight of the resin mold clutch facing has been reduced, and its friction and anti-wear properties have been improved.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: May 19, 1992
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Harunobu Kani, Kenji Kakihara
  • Patent number: 5112684
    Abstract: Fiberballs for filling uses have been prepared from mechanically-crimped fibers having both a primary crimp and a secondary crimp with specific configurations, especially amplitudes and frequencies. The fiberballs may contain a proportion of other fibers, particularly binder fibers.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: May 12, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Walter B. Halm, William J. Jones, Jr., James F. Kirkbride, Ilan Marcus, Adrian C. Snyder
  • Patent number: RE34020
    Abstract: A fibrous composite material in the form of individual fibres, sheets, layers or lightweight blocks comprising non-combustible fibres and lamellae of a layer mineral, a method for the manufacture of the fibrous composite materials by applying lamellae of a layer mineral to the fibres preferably from suspension followed by removal of the liquid phase of the suspension, and use of the fibrous composite materials for the fire-protection of substrates.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: August 4, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Peter J. Briggs, Kevin McAloon