Patents by Inventor Fumio Nakai

Fumio Nakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190100408
    Abstract: A method for detecting deterioration of a plurality of wire ropes is provided. Each of the wire ropes extends over a conductive sheave in parallel. The wire ropes define a measurement length extending between one end of the wire ropes and contact points of the wire ropes with the conductive sheave. The method comprises measuring the resistance through a conductive path passing through the measurement lengths of two of the wire ropes and the conductive sheave and detecting the deterioration of the wire ropes from the measured resistance.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventors: Masafumi Okawa, Fumio Nakai
  • Patent number: 5250590
    Abstract: A flame retardant resin composition comprising (A) 70 to 10% by weight of a rubber-reinforced styrene base resin, (B) 20 to 85% by weight of a polycarbonate resin, (C) 5 to 35% by weight of a high molecular weight halogen-containing compound of the formula: ##STR1## wherein n is an average polymerization degree and an integer of 4 to 30, R and R' are independently a hydrogen atom, a methyl group, an epoxypropyl group, a phenyl group, a halogenated phenyl group or a group of the formula: wherein m is an integer of 0 to 3, which compound has a bromine content of at least 45% by weight and an epoxy equivalent of at least 10,000 g/mol, and (D) 0 to 10% by weight of an antimony compound, which resin composition is excellent not only in heat stability but also in heat resistance, impact resistance, processability and light resistance.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: October 5, 1993
    Assignee: Sumitomo Naugatuck Co., Ltd.
    Inventors: Fumio Nakai, Hidetaka Matsuzaki, Koji Matsumoto, Ichiro Kondou
  • Patent number: 4518914
    Abstract: A testing apparatus of semiconductor wafers includes a base plate and a probe card including probe needles, wherein the probe card is detachably affixed to the base plate under air suction, which is derived from a vacuum produced in an airtightly sealed space provided between the base plate and the probe card.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: May 21, 1985
    Assignee: Japan Electronic Materials Corportion
    Inventors: Masao Okubo, Yasuro Yoshimitsu, Fumio Nakai, Oliver R. Garretson
  • Patent number: 4419491
    Abstract: A thermoplastic resin composition with excellent color development which comprises (A) a graft polymer comprising an ethylene-propylene elastomeric polymer and units of at least two kinds of monomers chosen from aromatic vinyl compounds, vinyl cyanide compounds and other copolymerizable monomers grafted thereon, and if necessary, (A') a copolymer comprising units of at least two kinds of monomers chosen from aromatic vinyl compounds, vinyl cyanide compounds and other copolymerizable monomers in an amount of not more than 95% by weight based on the combined weight of the graft polymer (A) and the copolymer (A'), with (B) a methyl methacrylate polymer, the proportion of the combined weight of the graft polymer (A) and the copolymer (A') and the weight of the methyl methacrylate polymer being from 5:95 to 95:5.
    Type: Grant
    Filed: February 23, 1982
    Date of Patent: December 6, 1983
    Assignee: Sumitomo Naugatuck Co., Ltd.
    Inventors: Hajime Sakano, Fumio Nakai, Yukio Tomari
  • Patent number: 4373063
    Abstract: An elastomeric composition having excellent properties such as excellent heat aging characteristics, dimensional stability, processability, fabrication qualities, hydrolytic resistance, yellowing resistance, and weatherability, which comprises(A) a graft polymer of a rubbery copolymer consisting predominantly ethylene-propylene with at least two groups of the monomers selected from an aromatic vinyl compound, an ethylenically unsaturated nitrile and a methacrylic acid ester, and(B) a polymer selected from a thermoplastic polyurethane, an aromatic vinyl-conjugated diene block copolymer, a polyester elastomer and an olefinic elastomer, in the weight ratio of 10:90 to 90:10.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: February 8, 1983
    Assignee: Sumitomo Naugatuck Co. Ltd.
    Inventors: Hajime Sakano, Fumio Nakai, Yukio Tomari
  • Patent number: 4271230
    Abstract: A foamed urethane composites comprising foaming urethane and a covering material and having excellent in thermal aging-resistance, which is obtained by applying to the covering material surface to be contacted with the foamed urethane (A) an organic solvent solution or aqueous emulsion comprising (A-1) at least one of flexible urethane resins, starting materials for preparation of flexible urethane resins and vinyl chloride resins, further applying thereto (B) an organic solvent solution comprising (B-1) a copolymer of a carboxyl group-containing ethylenically unsaturated monomer(s) with an acrylic and/or methacrylic acid ester(s) and (B-2) at least one of blocked isocyanate compounds, poly-N-alkoxymethylmelamine compounds, polyepoxy compounds, polyoxazoline compounds, polydihydrooxazine compounds and reactive polyamide compounds, and then subjecting the coated product to crosslinking under heating.
    Type: Grant
    Filed: August 17, 1979
    Date of Patent: June 2, 1981
    Assignee: Sumitomo Naugatuck Co., Ltd.
    Inventors: Hajime Sakano, Fumio Nakai, Yukio Tomari