Patents Assigned to Nippon Kayaku Kabushiki-Kaisha
  • Gas generator
    Patent number: 6823796
    Abstract: A gas generator G of the present invention has a construction in which a holder (3, 73) is fitted into a cup body (1, 71) and a tube body (2) or a container body (72) and encloses gas generants P and ignition agents (6, 76). The holder (3, 73) is formed of resin. A metallic reinforcement 4 is integrated with the resin holder (3) by insert molding. Or, a ring body (74) for sealing the cup body (71) and the holder (73) is mounted on the holder (73).
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: November 30, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventor: Junya Amano
  • Dye-sensitized photoelectric conversion device
    Patent number: 6822159
    Abstract: The present invention aims at developing a low-cost photoelectric conversion device having favorable conversion efficiency and a solar cell and, accordingly, relates to a photoelectric conversion device of a semiconductor fine particles, being sensitized with an organic dye, which adsorbs thereon a specified azo dye expressed by the general formula 1: wherein Ar 1 represents an aromatic group having at least one substituent selected from the group consisting of a carboxylic acid group, a hydroxyl group, a phosphoric acid group, a phosphoric acid ester group and a mercapto group either directly or via a cross-linking group; and Ar 2 represents an aromatic group having at least one electron-donating group as a substituent, and also to a solar cell using the photoelectric conversion device.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: November 23, 2004
    Assignees: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaaki Ikeda, Koichiro Shigaki, Teruhisa Inoue, Shozo Yanagida
  • Catalyst for methacrylic acid production, coated catalyst, and process for producing the same
    Patent number: 6812188
    Abstract: The present invention relates to a catalyst for producing methacrylic acid by the vapor-phase catalytic oxidation of methacrolein, comprising Mo, V, P and Cu as the indispensable active components, wherein copper acetate is used for all or a part of the necessary amount of a material for said Cu, a coated catalyst and a method for manufacturing the coated catalyst, and methacrolein is reacted in a high conversion and methacrylic acid is produced in a high selectivity by use of the catalyst of the present invention, and the catalyst can be used for reaction under high loading condition.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: November 2, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yoshimasa Seo, Atsushi Sudo, Hideki Sugi
  • Epoxy resins, epoxy resin mixtures, epoxy resin compositions and products of curing of the same
    Patent number: 6812318
    Abstract: The object of the present invention is to provide an epoxy resin and epoxy resin composition having a low viscosity which can afford a cured product having an excellent heat resistance. The present invention is characterized by using an epoxy resin which is obtained by reacting 5-methylresorcin with epihalohydrin in the presence of alkali metal hydroxide.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: November 2, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yasumasa Akatsuka, Koji Nakayama, Katsuhiko Oshimi, Syouichi Tomida
  • Gas generator for actuating vehicle passenger constrainer
    Patent number: 6796580
    Abstract: A gas generator for actuating a vehicle occupant restraint device, including a first hollow body with a bottom and sides, gas generants filled densely in the first hollow body, an electric ignitor formed by housing igniting agents in a second hollow body with a bottom and sides, and closing the second hollow body with a plug, and a holder positioning the second hollow body in a center of the first hollow body and fixing the first hollow body while holding the plug of the electric ignitor. Particularly, a ratio of an empty space to a full volume of a space partitioned by an inner surface of the first hollow body, an outer surface of the second hollow body, and the holder is less than 20% by volume.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: September 28, 2004
    Assignee: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Dairi Kubo, Junya Amano, Koji Nakamura, Kenjiro Ikeda
  • Dye type polarizing plate
    Patent number: 6790490
    Abstract: This invention relates to a polyvinyl alcohol type polarizing film or plate which comprises a water-soluble dye having the formula (1) in a free acid form or a copper complex salt thereof. The said polarizing plate has excellent polarizing performance capability and durability, and is suitably used for the green channel of a liquid crystal projector when B in formula (1) is a benzoylamino group and the water-soluble dye has a wavelength for maximum absorption (&lgr;max) of 520 nm or more and less than 580 nm.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: September 14, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Shoji Oiso, Kumiko Ishii, Yoshitaka Kajiwara, Toru Tabei
  • Gas generator
    Patent number: 6779812
    Abstract: A gas generator S applicable to a side airbag or a passenger-side airbag. The gas generator S comprises an elongated cylindrical housing 1. The housing 1 has, in its interior, a first combustion chamber 3, a third combustion chamber 5 formed in a filtering member 2 and a second combustion chamber 4 which are formed in this order along an axial direction of the housing 1. The combustion chambers 3-5 are each packed with gas generating agents 6 that generate high temperature gas by burning, and ignition means 7 for igniting only the gas generating agents packed in the first combustion chamber 3 is disposed in a holder 9 fitted in the housing 1.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: August 24, 2004
    Assignee: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Takeshi Ishida, Yoshiyuki Kishino
  • Catalyst process of making
    Patent number: 6762148
    Abstract: An object of the present invention is to provide a catalyst that is highly active and has a large mechanical strength. The catalyst of the present invention contains molybdenum, vanadium, copper and antimony as the essential components, being produced by using antimony acetate for an antimony source material and preferably used for producing acrylic acid by vapor-phase catalytic oxidation of acrolein.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: July 13, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Junzo Ohishi, Masahiro Senyo, Yoshimasa Seo, Hideki Sugi
  • Transparent sheet or film
    Patent number: 6723423
    Abstract: The present invention is relating to a transparent sheet or film which is good in productivity, high in transparency, excellent in antistatic property and reflection preventing property, high in hardness, and excellent in scratch resistance and solvent resistance. A transparent sheet or film of the present invention is a sheet or film having on one surface of a transparent support, a first electroconductive transparent layer comprising a cured layer of a resin containing fine particles of electroconductive zinc antimonate anhydride, and a second electroconductive transparent layer formed on the first layer, of which a refractive index is lower than that of the first layer.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: April 20, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Shoichi Kaneko, Hiroshi Sakurai, Takeshi Takahashi
  • Polyphenol resin, process for its production, epoxy resin composition and its use
    Patent number: 6723801
    Abstract: An object of the present invention is to provide an epoxy resin composition which has high flexibility, can be molded to a thin membrane, and can become a noninflammable cured product. The present invention comprises a polyphenol compound obtained by reacting to condense phenol with bischloromethyl biphenyl or bismethoxymethyl biphenyl, removing unreacted phenol and then reacting with BCMB again, wherein the polyphenol compound has a weight-average molecular weight of 3,000 or more as determined by GPC, and using the polyphenol compound as an agent for curing an epoxy resin.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: April 20, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yasumasa Akatsuka, Toyofumi Asano, Masahiro Imaizumi, Katsuhiko Oshimi, Syouichi Tomida
  • Gas generating composition
    Publication number: 20040069383
    Abstract: A gas generating composition which contains a nitrogenous organic compound as a fuel component and generates, at a high gasification rate, a clean gas harmless to the human body. The composition of the present invention comprises a nitrogenous organic compound as a fuel component and ammonium perchlorate and the nitrate of an alkaline metal or alkaline earth metal as oxidizing agents, wherein where a quantity of nitrate required solely for forming an oxide of alkaline metal or alkaline earth metal that can stoichiometrically neutralize hydrogen chloride generated from ammonium perchlorate is taken as 1, a quantity of nitrate of said alkaline metal or alkaline earth metal exceeds 0.9.
    Type: Application
    Filed: October 7, 2003
    Publication date: April 15, 2004
    Applicant: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
  • Urethane oligomer, resin compositions thereof, and cured article thereof
    Patent number: 6716892
    Abstract: The present invention relates to a new urethane oligomer (A) and a resin composition comprising (A) and an unsaturated group containing polycarboxylic acid resin (B) that can be diluted with water and is excellent in providing a cured product and that is suitable for a solder resist and an interlayer dielectric layer because the cured product is excellent in flexibility, soldering-heat resistance or the like and allows a development with an organic solvent or a dilute alkali solution; a photosensitive resin composition suitable for an etching resist or a cover lay; and a photosensitive film obtained thereby.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: April 6, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Satoshi Mori, Minoru Yokoshima, Noriko Kiyoyanagi, Yuichiro Matsuo, Hiroo Koyanagi
  • Hard coating material and film comprising the same
    Patent number: 6713170
    Abstract: The present invention provides heat-curable or UV-curable transparent hard coating materials suitable for forming a low refractive antireflection coating on a substrate such as a film or sheet to reduce reflection of external light or increase light transmittance. A UV-curable or heat-curable transparent hard coating material comprising a UV-curable resin having one or more (meth)acryloyl groups in one molecule or a heat-curable resin and silica-magnesium fluoride hydrate composite colloidal particles such that the transparent film obtained by curing said transparent hard coating material has a refractive index of 1.48 or less.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: March 30, 2004
    Assignees: Nippon Kayaku Kabushiki Kaisha, Nissan Chemical Industries, Ltd.
    Inventors: Shoichi Kaneko, Takeshi Takahashi, Yoshitane Watanabe, Keitaro Suzuki, Osamu Tanegashima, Yoshinari Koyama
  • Gas generator
    Patent number: 6709012
    Abstract: It is the object of the present invention to provide a gas generator that can provide a controlled expansion and inflation of the airbag with improved reliability. The gas generator D of the present invention is so structured that gas generating agents 7 packed in combustion chambers 3, 4 can be burnt by two ignitors 8, 9 independently of each other, wherein the ignitors 8, 9 electrically ignite ignition agents 26 by use of bridge wires 24 for generating heat by electrifying, and resistance values thereof are differentiated from each other.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: March 23, 2004
    Assignee: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Koji Tanaka, Takashi Saso, Hiroshi Hori
  • Leakage water cut-off agent and method of preventing water leakage
    Patent number: 6679944
    Abstract: An object of the present invention is to provide a leakage water cut-off agent that has an excellent power to seal a water leakage site by a simple process without damaging the appearance of a building. A leakage water cut-off agent of the present invention comprises (a) a surfactant, (b) an aluminium compound and (c) a basic substance, and further comprises water if necessary.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: January 20, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yuji Ito, Akemi Shiraishi, Wakako Tamura
  • Formazane compounds and method of dyeing using the same
    Patent number: 6653454
    Abstract: The present invention relates to a novel blue dye compound represented by Formula (1) as shown below, which can be synthesized without a dianisidine compound used for a raw material and can dye a cellulosic high molecular material to provide the blue dyed product that has a high color value, a good build-up and various kinds of good fastness; a method for dyeing a cellulosic high molecular material by using the same; and a cellulosic high molecular material dyed with the same. A formazan compound represented by (In Formula (1), R1 is hydrogen, sulfo, hydroxy, chloro, methoxy, carboxyl or alkyl; either of R2 and R3 is hydrogen and the other is sulfo; X is morpholino, 2-hydroxyethylamino or bis(2-hydroxyethyl)amino; and Y is a phenylene diimino represented by Formula (2) as shown below (In Formula (2), R4 is sulfo or carboxyl)) or the salt thereof.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: November 25, 2003
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Mariko Umeda, Hideshiro Nomura, Yasuo Shirasaki, Eiichi Ogawa
  • Anthrapyridone compound, aqueous magenta ink compositions and ink-jet recording method
    Patent number: 6648952
    Abstract: The present invention relates to anthrapyridone disulfonic acid represented by Formula (1) as shown below or the salt thereof, a water-based magenta ink composition containing the same, and a method for ink-jet recording by using the same. The compound of the present invention is excellent in water-solubility. The magenta ink composition containing the compound has a good storage stability. The product recorded by the ink-jet recording method appears with a vivid and reproducible hue, and has high light fastness and water fastness.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: November 18, 2003
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Hiroyuki Matsumoto, Yasuo Murakami, Junko Yoshioka, Yasuo Shirasaki, Katsunori Fujii
  • Anthrapyridone compounds, water-based magenta ink composition, and method of ink-jet printing
    Patent number: 6645283
    Abstract: The present invention relates to a novel anthrapyridone compound represented by Formula (1) as described below or the salt thereof which has hue and vividness suitable for ink-jet printing and give a print excellent in fastness to light and water, a water-based magenta ink composition containing any of the compounds or salt thereof, an ink-jet printing method using the ink composition and a new intermediate. wherein, R1 is hydrogen atom, an alkyl group etc; R2 is hydrogen atom, methyl etc; X and Y represent independently chlorine atom, hydroxy, etc.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: November 11, 2003
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Hiroyuki Matsumoto, Takafumi Fujii, Yasuo Shirasaki, Hirokazu Kitayama
  • Housing for a gas generator for a vehicle airbag device
    Patent number: D490822
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: June 1, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Akihiko Suehiro, Takayoshi Dosai, Tetsuo Saito
  • Gas generator for an air bag system
    Patent number: D499746
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: December 14, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Akihiko Suehiro, Takayoshi Dosai, Tetsuo Saito