Patents by Inventor Hajime Kitano

Hajime Kitano 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: 10414131
    Abstract: An adhesive sheet includes an adhesive composition layer. The adhesive composition layer is formed using a composition including a polythiol compound, a compound having plural epoxy groups, a radical generator and an amine-based catalyst. The ratio (Ep/SH (epoxy groups/thiol groups ratio)) of a total molar number (Ep) of epoxy groups contained in the compound having plural epoxy groups to a total molar number (SH) of thiol groups contained in the polythiol compound is higher than 0.20 but lower than 1.00.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: September 17, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hajime Kitano
  • Patent number: 9637666
    Abstract: A composition includes: a polythiol compound; a compound having plural epoxy groups; a radical generator; and an amine-based catalyst. In the composition, the ratio (Ep/SH (epoxy groups/thiol groups)) of the total molar number (Ep) of epoxy groups contained in the compound having plural epoxy groups to the total molar number (SH) of thiol groups contained in the polythiol compound is 0.50 or higher but lower than 2.00.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: May 2, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hajime Kitano
  • Publication number: 20170037190
    Abstract: A composition includes: a polythiol compound; a (meth)acrylic compound having a plurality of at least one of an acryloyl group or a methacryloyl group and having a ring structure; and a radical generator, the ratio (Ac/SH) of the total molar number (Ac) of the at least one of an acryloyl group or a methacryloyl group contained in the (meth)acrylic compound to the total molar number (SH) of thiol groups contained in the polythiol compound is higher than 0.20 but lower than 0.70.
    Type: Application
    Filed: April 1, 2015
    Publication date: February 9, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Hajime KITANO
  • Publication number: 20170037189
    Abstract: A composition includes: a polythiol compound; an aliphatic (meth)acrylic compound having a plurality of at least one of an acryloyl group or a methacryloyl group and being acyclic; and a radical generator, the ratio (Ac/SH) of the total molar number (Ac) of the at least one of an acryloyl group or a methacryloyl group contained in the aliphatic (meth)acrylic compound to the total molar number (SH) of thiol groups contained in the polythiol compound is from 0.70 to 1.20.
    Type: Application
    Filed: April 1, 2015
    Publication date: February 9, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Hajime KITANO
  • Publication number: 20170029677
    Abstract: A composition which includes: a polythiol compound; a compound having a carbon-carbon double bond at a terminal of a molecule thereof; a photo radical generator; and a thermal radical generator, a ratio (Ene/SH) of a total molar number (Ene) of the carbon-carbon double bond contained in terminals of a molecule of the compound having a carbon-carbon double bond at a terminal of a molecule thereof to a total molar number (SH) of thiol groups contained in the polythiol compound being higher than 0.20 but equal to or less than 0.70.
    Type: Application
    Filed: April 1, 2015
    Publication date: February 2, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Hajime KITANO
  • Publication number: 20170021593
    Abstract: An adhesive sheet, the adhesive sheet having an adhesive composition layer, the adhesive composition layer being formed using a composition including: a polythiol compound; a (meth)acrylic compound having a plurality of at least one of an acryloyl group or a methacryloyl group; a radical generator; and a Michael addition catalyst, a ratio (Ac/SH) of a total molar number (Ac) of the at least one of an acryloyl group or a methacryloyl group contained in the (meth)acrylic compound to a total molar number (SH) of thiol groups contained in the polythiol compound being from 0.25 to 0.80.
    Type: Application
    Filed: April 1, 2015
    Publication date: January 26, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Hajime KITANO
  • Publication number: 20160303832
    Abstract: An adhesive sheet includes an adhesive composition layer. The adhesive composition layer is formed using a composition including a polythiol compound, a compound having plural epoxy groups, a radical generator and an amine-based catalyst. The ratio (Ep/SH (epoxy groups/thiol groups ratio)) of a total molar number (Ep) of epoxy groups contained in the compound having plural epoxy groups to a total molar number (SH) of thiol groups contained in the polythiol compound is higher than 0.20 but lower than 1.00.
    Type: Application
    Filed: December 22, 2014
    Publication date: October 20, 2016
    Inventor: Hajime KITANO
  • Patent number: 9376094
    Abstract: A pedal bracket is fixed to a dash panel on an interior side of a vehicle room. A brake arm is oscillatably supported by the pedal bracket and has a brake pedal pad at its one end. A coupling arm is supported by the pedal bracket and couples a push rod and the brake arm together. A rotating arm is supported by the coupling arm in a rotatable state. One end of the rotating arm contacts with a fixed bracket and thereby rotates the rotating arm when the pedal bracket is displaced in a vehicle rearward direction. The rotation causes contact of another end of the rotating arm with the push rod to induce curving of the push rod.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: June 28, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hajime Kitano
  • Publication number: 20150183408
    Abstract: A pedal bracket is fixed to a dash panel on an interior side of a vehicle room. A brake arm is oscillatably supported by the pedal bracket and has a brake pedal pad at its one end. A coupling arm is supported by the pedal bracket and couples a push rod and the brake arm together. A rotating arm is supported by the coupling arm in a rotatable state. One end of the rotating arm contacts with a fixed bracket and thereby rotates the rotating arm when the pedal bracket is displaced in a vehicle rearward direction. The rotation causes contact of another end of the rotating arm with the push rod to induce curving of the push rod.
    Type: Application
    Filed: August 21, 2013
    Publication date: July 2, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hajime Kitano
  • Publication number: 20150175857
    Abstract: A composition includes: a polythiol compound; a compound having plural epoxy groups; a radical generator; and an amine-based catalyst. In the composition, the ratio (Ep/SH (epoxy groups/thiol groups)) of the total molar number (Ep) of epoxy groups contained in the compound having plural epoxy groups to the total molar number (SH) of thiol groups contained in the polythiol compound is 0.50 or higher but lower than 2.00.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 25, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Hajime KITANO
  • Patent number: 8865841
    Abstract: The invention provides a rubber composition comprising a styrene-butadiene copolymer and having improved compatibility with a thiol-based crosslinking agent and also having increased curability. As means for solving the problems, the inventive thiol-containing liquid rubber composition comprises (A) a styrene-butadiene copolymer which is liquid at 25° C. and (B) a polythiol derived from mercaptocarboxylic acid, wherein the styrene-butadiene copolymer (A) desirably has a bound styrene content of 20 to 90% by mass.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: October 21, 2014
    Assignee: Bridgestone Corporation
    Inventors: Hajime Kitano, Shuyou Akama
  • Patent number: 8859634
    Abstract: This invention relates to a photo-curing or electron beam-curing adherent resin composition being excellent in the adhesiveness to various adherends such as metal oxide, metal, resin and so on, and more particularly to an adherent resin composition of a photo-curing or electron beam-curing type comprising a difunctional urethane (metha)acrylate oligomer (A) and a monomer component (B), characterized in that the urethane (metha)acrylate oligomer includes a urethane prepolymer portion composed of a polyol and a polyisocyanate wherein repetitive number of urethane prepolymer portion (n) is 10-30, and the monomer component (B) is a cyclic monomer having a (metha)acryloyl group.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: October 14, 2014
    Assignee: BRIDGESTONE Corporation
    Inventors: Junji Sakata, Hajime Kitano, Hiroyuki Kanesugi
  • Patent number: 8541510
    Abstract: This invention relates to a thermosetting composition having an excellent thermosetting property, and more particularly to a thermosetting composition comprising (A) a diene-based polymer having two or more unsaturated bonds, (B) a polythiol derived from a mercaptocarboxylic acid, and (c) a thermally radical-generating agent.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: September 24, 2013
    Assignee: Bridgestone Corporation
    Inventors: Hajime Kitano, Shuyou Akama
  • Patent number: 8476333
    Abstract: The present invention relates to a photocurable composition which exhibits excellent adhesiveness not only to thermoplastic resins such as PET and polyimide but also to adherends of metal oxides such as IZO and metals such as gold, more particularly to a photocurable composition which comprises a urethane oligomer (A) having two or more allyl ether and/or vinyl ether groups and a polythiol (B) having two or more thiol groups.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: July 2, 2013
    Assignee: Bridgestone Corporation
    Inventors: Hajime Kitano, Shuyou Akama
  • Publication number: 20120165498
    Abstract: The present invention relates to a photocurable composition which exhibits excellent adhesiveness not only to thermoplastic resins such as PET and polyimide but also to adherends of metal oxides such as IZO and metals such as gold, more particularly to a photocurable composition which comprises a urethane oligomer (A) having two or more allyl ether and/or vinyl ether groups and a polythiol (B) having two or more thiol groups.
    Type: Application
    Filed: August 9, 2010
    Publication date: June 28, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hajime Kitano, Shuyou Akama
  • Publication number: 20120071579
    Abstract: The invention provides a light-curable adhesive resin composition, which exhibits good adhesion to adherends, including not only thermoplastic resins such as PET or polyimide, but also metal oxides such as IZO and metals such as gold. As means for solving the problems, the inventive thiol group-containing adhesive resin composition contains (A) a urethane (meta-) acrylate oligomer having a weight average molecular weight (Mw) of 5,000-40,000, (B) a (meta-) acryloyl morpholine monomer, (C) a polythiol, and (D) a photopolymerization initiator, wherein the polythiol (C) has thiol groups in an amount of 0.4 equivalents or more per 1 equivalent of the total (meta-) acrylate groups contained in the thiol group-containing adhesive resin composition.
    Type: Application
    Filed: April 19, 2010
    Publication date: March 22, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hajime Kitano, Shuyou Akama
  • Publication number: 20120041154
    Abstract: The invention provides a rubber composition comprising a styrene-butadiene copolymer and having improved compatibility with a thiol-based crosslinking agent and also having increased curability. As means for solving the problems, the inventive thiol-containing liquid rubber composition comprises (A) a styrene-butadiene copolymer which is liquid at 25° C. and (B) a polythiol derived from mercaptocarboxylic acid, wherein the styrene-butadiene copolymer (A) desirably has a bound styrene content of 20 to 90% by mass.
    Type: Application
    Filed: April 16, 2010
    Publication date: February 16, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hajime Kitano, Shuyou Akama
  • Patent number: 8110629
    Abstract: A flame-retardant composition includes: a powdery acid-modified hydrogenated block copolymer (a) having a bulk density of 0.1 to 0.4 g/ml and which is a hydrogenated block copolymer modified by addition of an unsaturated carboxylic acid or a derivative thereof, the hydrogenated block copolymer comprises a polymer block A composed mainly of a vinyl aromatic compound unit and a polymer block B composed mainly of a conjugated diene unit, and has a weight average molecular weight of 50,000 to 500,000; a polyolefin resin (b); a non-aromatic rubber softener (c); and a metal hydrate (d). The flame-retardant composition contains the components (a), (b), (c) and (d) in proportions that satisfy the following relationships (1) to (3): 0.1?Wa/(Wa+Wb)?0.9??(1) 0.05?Wc/(Wa+Wb+Wc)?0.5??(2) 0.4?Wd/(Wa+Wb+Wc+Wd)?0.75??(3) wherein Wa, Wb, Wc and Wd represent masses of the acid-modified hydrogenated block copolymer (a), the polyolefin resin (b), the non-aromatic rubber softener (c) and the metal hydrate (d), respectively.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: February 7, 2012
    Assignee: Kuraray Co., Ltd.
    Inventors: Hajime Kitano, Koichi Wada, Hideo Takamatsu
  • Publication number: 20110224382
    Abstract: This invention relates to a thermosetting composition having an excellent thermosetting property, and more particularly to a thermosetting composition comprising (A) a diene-based polymer having two or more unsaturated bonds, (B) a polythiol derived from a mercaptocarboxylic acid, and (c) a thermally radical-generating agent.
    Type: Application
    Filed: September 25, 2009
    Publication date: September 15, 2011
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hajime Kitano, Shuyou Akama
  • Patent number: 7982940
    Abstract: The present invention provides particles for display media constituting the display media used for an information display panel, in which the display media are sealed between two substrates, at least one of two substrates being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information, comprising: the particles having a substantially spherical shape, which are made by polymerizing raw materials including monomers, which include (acrylic or methacrylic) resin-hydrocarbon resin copolymer in the particles, in which a part of or all of the monomers are a multifunctional monomer having a plurality of polymerization reactive groups in one molecule, and which have minute irregularities on their surface evenly. By such a construction, the particles for display media can obtain irregularities firmly fixed on their surface. Poor display can be solved by using the same.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: July 19, 2011
    Assignee: Bridgestone Corporation
    Inventors: Kazuya Murata, Takao Ohuchi, Hajime Kitano