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).
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Patent number: 10414131Abstract: 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: GrantFiled: December 22, 2014Date of Patent: September 17, 2019Assignee: BRIDGESTONE CORPORATIONInventor: Hajime Kitano
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Patent number: 9637666Abstract: 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: GrantFiled: December 23, 2014Date of Patent: May 2, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Hajime Kitano
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Publication number: 20170037190Abstract: 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: ApplicationFiled: April 1, 2015Publication date: February 9, 2017Applicant: BRIDGESTONE CORPORATIONInventor: Hajime KITANO
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Publication number: 20170037189Abstract: 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: ApplicationFiled: April 1, 2015Publication date: February 9, 2017Applicant: BRIDGESTONE CORPORATIONInventor: Hajime KITANO
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Publication number: 20170029677Abstract: 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: ApplicationFiled: April 1, 2015Publication date: February 2, 2017Applicant: BRIDGESTONE CORPORATIONInventor: Hajime KITANO
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Publication number: 20170021593Abstract: 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: ApplicationFiled: April 1, 2015Publication date: January 26, 2017Applicant: BRIDGESTONE CORPORATIONInventor: Hajime KITANO
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Publication number: 20160303832Abstract: 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: ApplicationFiled: December 22, 2014Publication date: October 20, 2016Inventor: Hajime KITANO
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Patent number: 9376094Abstract: 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: GrantFiled: August 21, 2013Date of Patent: June 28, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hajime Kitano
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Publication number: 20150183408Abstract: 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: ApplicationFiled: August 21, 2013Publication date: July 2, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hajime Kitano
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Publication number: 20150175857Abstract: 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: ApplicationFiled: December 23, 2014Publication date: June 25, 2015Applicant: BRIDGESTONE CORPORATIONInventor: Hajime KITANO
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Patent number: 8865841Abstract: 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: GrantFiled: April 16, 2010Date of Patent: October 21, 2014Assignee: Bridgestone CorporationInventors: Hajime Kitano, Shuyou Akama
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Patent number: 8859634Abstract: 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: GrantFiled: December 9, 2008Date of Patent: October 14, 2014Assignee: BRIDGESTONE CorporationInventors: Junji Sakata, Hajime Kitano, Hiroyuki Kanesugi
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Patent number: 8541510Abstract: 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: GrantFiled: September 25, 2009Date of Patent: September 24, 2013Assignee: Bridgestone CorporationInventors: Hajime Kitano, Shuyou Akama
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Patent number: 8476333Abstract: 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: GrantFiled: August 9, 2010Date of Patent: July 2, 2013Assignee: Bridgestone CorporationInventors: Hajime Kitano, Shuyou Akama
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Publication number: 20120165498Abstract: 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: ApplicationFiled: August 9, 2010Publication date: June 28, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Hajime Kitano, Shuyou Akama
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Publication number: 20120071579Abstract: 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: ApplicationFiled: April 19, 2010Publication date: March 22, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Hajime Kitano, Shuyou Akama
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Publication number: 20120041154Abstract: 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: ApplicationFiled: April 16, 2010Publication date: February 16, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Hajime Kitano, Shuyou Akama
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Patent number: 8110629Abstract: 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: GrantFiled: September 12, 2006Date of Patent: February 7, 2012Assignee: Kuraray Co., Ltd.Inventors: Hajime Kitano, Koichi Wada, Hideo Takamatsu
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Publication number: 20110224382Abstract: 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: ApplicationFiled: September 25, 2009Publication date: September 15, 2011Applicant: BRIDGESTONE CORPORATIONInventors: Hajime Kitano, Shuyou Akama
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Patent number: 7982940Abstract: 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: GrantFiled: December 14, 2005Date of Patent: July 19, 2011Assignee: Bridgestone CorporationInventors: Kazuya Murata, Takao Ohuchi, Hajime Kitano