Patents by Inventor Tsukasa Toyoshima

Tsukasa Toyoshima 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).

  • Patent number: 9172092
    Abstract: A binder composition for batteries, including (A) a polymer that has at least one structural unit selected from the group consisting of structural units represented by the following formulae (a1) to (a5), respectively, and (f) a functional group containing a nitrogen atom, an oxygen atom, a silicon atom, a germanium atom, a tin atom or a combination thereof; and (B) a liquid medium, the polymer (A) having a solubility of no less than 5 g in 100 g of cyclohexane at 25° C. and 1 atom.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: October 27, 2015
    Assignee: JSR CORPORATION
    Inventors: Takuo Sone, Tsukasa Toyoshima
  • Publication number: 20130260241
    Abstract: A binder composition for batteries, including (A) a polymer that has at least one structural unit selected from the group consisting of structural units represented by the following formulae (a1) to (a5), respectively, and (f) a functional group containing a nitrogen atom, an oxygen atom, a silicon atom, a germanium atom, a tin atom or a combination thereof; and (B) a liquid medium, the polymer (A) having a solubility of no less than 5 g in 100 g of cyclohexane at 25° C. and 1 atom.
    Type: Application
    Filed: November 11, 2011
    Publication date: October 3, 2013
    Applicant: JSR CORPORATION
    Inventors: Takuo Sone, Tsukasa Toyoshima
  • Publication number: 20100048803
    Abstract: A method for producing a polymer for oil-resistant rubber, which comprises adding, to an aqueous dispersion of an unsaturated nitrile-conjugated diene copolymer (component A), a monomer composition (component B) containing at least one kind of monomer selected from the group consisting of a nitrile group-containing monomer (component B-1), a (meth)acrylic acid ester monomer (component B-2) and an aromatic vinyl compound monomer (component B-3), and conducting a polymerization reaction in a state that the ratio of the conjugated diene monomer present in the system, to the total monomers present in the system is controlled at 10 mol % or less.
    Type: Application
    Filed: December 28, 2007
    Publication date: February 25, 2010
    Applicant: JSR CORPORATION
    Inventors: Minoru Tsuneyoshi, Yukihiro Sawada, Tsukasa Toyoshima, Kenji Hasegawa, Toshihiro Tadaki
  • Publication number: 20090269683
    Abstract: A radiation sensitive resin composition comprising (A) a colorant, (B) an alkali-soluble resin, (C) a polyfunctional monomer and (D) a radiation sensitive radical generator, wherein the alkali-soluble resin (B) is a resin having a group containing a dithiocarbonyl bond at least one terminal of its polymer chain. A color filter which is free from burning can be manufactured from this composition at a high yield.
    Type: Application
    Filed: September 7, 2006
    Publication date: October 29, 2009
    Applicant: JSR CORPORATION
    Inventors: Tatsuyoshi Kawamoto, Tsukasa Toyoshima, Masashi Arai, Ryu Matsumoto, Tomio Nagatsuka, Toshihiro Tadaki
  • Publication number: 20080081873
    Abstract: A thermoplastic elastomer composition obtained by dynamically heat-treating a mixture containing a thermoplastic resin (A) having a melting point of not less than 200° C. and an elastomer (B) having a constitutional unit derived from an ester group-containing monomer in the presence of, as a crosslinking agent (C), a polymer (C-1) comprising a (meth)acrylate (c-1) unit having a weight average molecular weight (Mw) of 1,000 to 30,000 and a molecular weight distribution (Mw/Mn) of 1.0 to 4.0 and/or a polymer (C-2) which comprises 5 to 35 mass % of the (meth)acrylate (c-1) unit and 65 to 95 mass % of an aromatic vinyl monomer (c-2) unit, the polymer (C-2) having a weight average molecular weight (Mw) of 1,000 to 30,000 and a molecular weight distribution (Mw/Mn) of 1.0 to 4.0. The composition has a good sea-island structure as a whole and excellent heat resistance, and is useful as a substitute for acrylic rubbers.
    Type: Application
    Filed: November 25, 2005
    Publication date: April 3, 2008
    Applicant: JSR CORPORATION
    Inventors: Kentarou Kanae, Masato Kobayashi, Minoru Maeda, Tsukasa Toyoshima, Minoru Tsuneyoshi
  • Patent number: 7342070
    Abstract: Disclosed are a conjugated diolefin (co) polymer rubber formed from either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound, wherein the (co) polymer rubber has a primary amino group and an alkoxysilyl group which are bonded to a (co) polymer chain; a process for producing the same; a rubber composition; a composite; and a tire. The (co) polymer rubber has satisfactory processability, and can give an automotive tire tread having a balance among wear resistance, failure characteristics, low hysteresis loss and wet-skid characteristics.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: March 11, 2008
    Assignee: JSR Corporation
    Inventors: Keisuke Tsukimawashi, Naokazu Kobayashi, Tsukasa Toyoshima, Toshihiro Tadaki, Kouta Taniguchi
  • Publication number: 20050182159
    Abstract: An objective of the present invention is to provide a production process capable of improving an operation efficiency of a diene-based rubber-inorganic compound composite during production by forming a composite having high dispersibility of an inorganic compound in a diene-based rubber and having relatively large crumb diameter upon coagulation. The present invention provides a process for producing a composite comprising a diene-based rubber and an inorganic compound represented by the general formula: wM.xSiOy.zH2O (where M is at least one metal element selected from the group consisting of Al, Mg, Ti and Ca, metal oxide thereof or metal hydroxide thereof, and w, x, y, and z are an integer of from 1 to 5, an integer of from 0 to 10, an integer of from 2 to 5, and an integer of from 0 to 10, respectively.), and comprises a step of mixing the inorganic compound and/or a material capable of forming the inorganic compound, an anionic compound and a dispersion liquid of the diene-based rubber.
    Type: Application
    Filed: March 16, 2004
    Publication date: August 18, 2005
    Applicant: JRS Corporation
    Inventors: Yoshiyuki Udagawa, Tsukasa Toyoshima, Toshihiro Tadaki
  • Publication number: 20050131156
    Abstract: An object of the present invention is to provide an oil resistant and weather resistant rubber composition which leads to a molded product (rubber product) that has a sufficiently high strength and hardness, and low compression set, and that is excellent in ozone resistance; and a molded product such as a hose and a seal using the same. The oil resistant and weather resistant rubber composition of the present invention comprises an epoxy group-containing acrylic-based rubber having an epoxy group in an amount from 0.01 to 1.5 mmol/g, and a carboxyl group-containing unsaturated nitrile-conjugated diene-based copolymer having a carboxyl group in an amount from 0.02 to 2.5 mmol/g. The rubber composition may further comprise a reinforcing agent, a plasticizer, a crosslinking agent and the like.
    Type: Application
    Filed: November 18, 2004
    Publication date: June 16, 2005
    Applicant: JSR CORPORATION
    Inventors: Yukihiro Sawada, Tsukasa Toyoshima, Minoru Tsuneyoshi, Kenji Hasegawa
  • Publication number: 20040254301
    Abstract: Disclosed are a conjugated diolefin (co)polymer rubber formed from either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound, wherein the (co) polymer rubber has a primary amino group and an alkoxysilyl group which are bonded to a (co)polymer chain; a process for producing the same; a rubber composition; a composite; and a tire. The (co) polymer rubber has satisfactory processability, and can give an automotive tire tread having a balance among wear resistance, failure characteristics, low hysteresis loss and wet-skid characteristics.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 16, 2004
    Inventors: Keisuke Tsukimawashi, Naokazu Kobayashi, Tsukasa Toyoshima, Toshihiro Tadaki, Kouta Taniguchi
  • Patent number: 6280905
    Abstract: A photosensitive resin composition which comprises (1) a particulate copolymer comprising 10-99.8% by mole of the unit of (i) an aliphatic conjugated diene monomer, 0.1-30% by mole of the unit of (ii) a monomer having one polymerizable unsaturated group and an amino group, 0.1-20% by mole of the unit of (iii) a monomer having at least two polymerizable unsaturated groups and 0-40% by mole of the unit of (iv) a copolymerizable other monomer having one polymerizable unsaturated group, (2) a photopolymerizable unsaturated monomer and (3) a photopolymerization initiator typically represented by 9-fluorenone or 2-i-propylthioxanthone. A photosensitive resin composition is provided which can be developed by using water, has a low hardness and high resilience, and is excellent in balance of properties.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: August 28, 2001
    Assignee: JSR Corporation
    Inventors: Katsuo Koshimura, Tsukasa Toyoshima, Takashi Nishioka, Tadaaki Tanaka
  • Patent number: 5969055
    Abstract: A liquid crystal alignment agent containing at least two kinds of polymers selected from the group consisting of polyamic acids and imidized polymers and having a structure obtained by dehydration and ring closure of polyamic acid. In the at least two kinds of polymers contained in the liquid crystal alignment agent, the polymer of higher imidization degree has a smaller surface free energy. The liquid crystal alignment agent gives a liquid crystal display device having less stuck image and high pretilt angle.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: October 19, 1999
    Assignee: JSR Corporation
    Inventors: Michinori Nishikawa, Kyouyu Yasuda, Shigeo Kawamura, Tsukasa Toyoshima, Yasuo Matsuki, Kengo Wakabayashi
  • Patent number: 5783656
    Abstract: There are provided a polyamic acid obtainable by reacting a diamine compound of the formula (1) ##STR1## wherein R.sup.1 is an alkyl group having 1 to 12 carbon atoms, a haloalkyl group having 1 to 12 carbon atoms or a halogen atom, each of X and Y is independently a divalent linking group,with a tetracarboxylic acid dianhydride; a polyimide obtainable by dehydrating and ring-closing the above polyamic acid; and a liquid crystal aligning agent containing the above polyamic acid and/or the above polyimide.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: July 21, 1998
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Masayuki Kimura, Tsukasa Toyoshima, Keiichi Yamamoto, Kengo Wakabayashi, Yasuo Matsuki, Kyouyu Yasuda