Patents by Inventor Daisuke Nohara
Daisuke Nohara 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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Publication number: 20090242094Abstract: A pneumatic tire in which the average peel strength between the surface of (A) a layer of a single-layered or multi-layered film of a thermoplastic resin and (B) a rubbery elastic layer, which are used as the inner liner layer, is 6 kN/m or greater at ?20° C., i.e., a pneumatic tire exhibiting excellent average peel strength between the surface of layer (A) and layer (B), which are used in combination as the inner liner layer exhibiting excellent gas barrier property and flexibility, at a low temperature and at the room temperature, is provided.Type: ApplicationFiled: April 27, 2007Publication date: October 1, 2009Applicant: BRIDGESTONE CORPORATIONInventors: Daisuke Kato, Daisuke Nohara, Yuwa Takahashi, Daisuke Nakagawa
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Publication number: 20090229726Abstract: In the present invention, a tire for heavy loading which is excellent in an air holding property and a durability of a bead part and can stand use over a long period of time can be provided by disposing an air blocking layer having a thickness of 1 mm or less and an oxygen permeation amount of 3×10?13 cm3·cm/cm2·sec·Pa or less at 60° C. and 65% RH on a whole outermost layer of a carcass layer 50 that an end of the air blocking layer is set within 100 mm from a toe tip of a bead part in a direction along a bead base line. Further, a conventional inner liner can be reduced in a thickness or removed, and the tire can be reduced in a weight.Type: ApplicationFiled: February 24, 2006Publication date: September 17, 2009Applicant: BRIDGESTONE CORPORATIONInventors: Shinsuke Nakane, Daisuke Nohara
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Publication number: 20090114328Abstract: An innerliner for tire is formed by laminating a composition containing an elastomer component onto a resin layer and then irradiating energy beams required for generating partial crosslinking between the resin layer and the elastomer component.Type: ApplicationFiled: November 5, 2008Publication date: May 7, 2009Applicant: BRIDGESTONE CORPORATIONInventors: Yuuwa Takahashi, Daisuke Nohara, Daisuke Nakagawa, Kentaro Fujino
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Publication number: 20080124523Abstract: The present invention provides a laminate formed by binding (A) a layer including a resin film layer and (B) a rubbery elastomer layer through (C) an adhesive layer, in which an adhesive composition constituting the above (C) an adhesive layer includes (a) a rubber component and (b) at least one of poly-p-dinitrosobenzene and 1,4-phenylenedimaleimide, as a crosslinking agent and a crosslinking aid, in an amount of 0.1 mass parts or more relative to 100 mass parts of the rubber component, and provides a tire using the above laminate. The laminate has a resin film layer and a rubbery elastomer layer which are bound and integrated through the above adhesive layer, can be produced with good workability, and also is excellent in the peeling strength, and thus can be suitably used as an inner liner having a less thickness.Type: ApplicationFiled: November 30, 2005Publication date: May 29, 2008Applicant: BRIDGESTONE CORPORATIONInventors: Daisuke Nohara, Daisuke Kato, Yuwa Takahashi
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Patent number: 7365112Abstract: A rubber composition comprises 0.1-10 parts by mass of at least one of non-ionic surfactants having a special structure based on 100 parts by mass of at least one rubber component selected from natural rubber and synthetic diene rubbers.Type: GrantFiled: March 26, 2004Date of Patent: April 29, 2008Assignee: Bridgestone CorporationInventors: Fumihiro Shiraishi, Norikazu Otoyama, Daisuke Nohara
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Publication number: 20060167160Abstract: A rubber composition for tires which comprises 100 parts by mass of (A) copolymer (a) which is a styrene-butadiene copolymer having a weight-average molecular weight of 4.0×105 to 3.0×106; as obtained in accordance with gel permeation chromatography and expressed as the value of corresponding polystyrene, a content of the bound styrene St(a) of 10 to 50% by mass and a content of the vinyl unit in the butadiene portion of 20 to 70%; 10 to 200 parts by mass of (B) copolymer (b) which is a hydrogenated styrene-butadiene copolymer having a weight-average molecular weight of 5.0×103 to 2.Type: ApplicationFiled: June 19, 2003Publication date: July 27, 2006Applicant: BRIDGESTONE CORPORATIONInventors: Ryuji Nakagawa, Norikazu Otoyama, Daisuke Nohara
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Publication number: 20050176861Abstract: The rubber composition of the present invention is prepared by mixing 10 to 200 parts by mass of silica and 1 to 30 parts by mass of a silane compound having sulfur atom, which has a specific structure such that an organooxysilyl group is present at both ends of the molecule and sulfide or a polysulfide is present at the central portion of the molecule, with 100 parts by mass of a polymer. The rubber composition of the present invention has a small viscosity in the unvulcanized condition and provides excellent dispersion of silica. When this composition is used as a material for a tire tread, a tire exhibiting excellent abrasion resistance, a small rolling resistance and excellent braking property and steering stability on wet roads, can be obtained.Type: ApplicationFiled: June 9, 2003Publication date: August 11, 2005Inventors: Atsushi Nakayama, Daisuke Nohara
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Publication number: 20050176858Abstract: A rubber composition comprising 100 parts by weight of a rubber ingredient comprising natural rubber and/or a synthetic rubber, 0.1 to 50 parts by weight of at least one nitrogenous compound selected among benzimidazole derivatives having a specific structure and hydrazide derivatives having a specific structure, and 0.1 to 50 parts by weight of a protonic acid; and a pneumatic tire including a member formed from this rubber composition. The rubber composition enables excellent gripping performance while attaining intact productivity. The pneumatic tire produced from this rubber composition, in particular, the tire whose tread has been formed from the composition, has significantly improved gripping performance in high-speed driving, etc.Type: ApplicationFiled: February 17, 2003Publication date: August 11, 2005Inventors: Daisuke Nohara, Akinori Oka, Ken Sonoki, Syuichi Kijima, Jun Igarashi
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Publication number: 20040249032Abstract: Provided is a rubber composition comprising an inorganic filler, a compound having at least one group A reacting with a rubber and two or more groups B adsorbing on the inorganic filler described above in the same molecule, a compound having the group A reacting with a rubber and an amino group in the same molecule or acrylate or methacrylate having a specific structure and further comprising, if necessary, a silane coupling agent. This makes it possible to provide a rubber composition which is excellent in the dispersibility of an inorganic filler, so that it does not elevate a viscosity of a non-vulcanized rubber and does not damage the processability and which does not bring about roughening on the surface of a rubber and is improved in a storage modulus.Type: ApplicationFiled: March 31, 2004Publication date: December 9, 2004Inventors: Daisuke Nohara, Masaaki Tsuchihashi, Isao Nishi, Tetsuo Takano
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Patent number: 6806303Abstract: An additive for a rubber composition consists essentially of an ester of (i) an aliphatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group in its molecule, or an ester of (ii) an aromatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group bonded to an aromatic ring in its molecule. And also, it relates to an additive composition, a rubber composition and a pneumatic tire using such an additive for a rubber composition.Type: GrantFiled: August 8, 2001Date of Patent: October 19, 2004Assignees: Bridgestone Corporation, Kao CorporationInventors: Daisuke Nohara, Jingo Shirasaka, Isao Nishi, Masaaki Tsuchihashi, Tetsuo Takano
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Publication number: 20040198876Abstract: A rubber composition comprises 0.1-10 parts by mass of at least one of non-ionic surfactants having a special structure based on 100 parts by mass of at least one rubber component selected from natural rubber and synthetic diene rubbers.Type: ApplicationFiled: March 26, 2004Publication date: October 7, 2004Applicant: BRIDGESTONE CORPORATIONInventors: Fumihiro Shiraishi, Norikazu Otoyama, Daisuke Nohara
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Patent number: 6667356Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.Type: GrantFiled: November 25, 2002Date of Patent: December 23, 2003Assignees: Bridgestone Corporation, Otsuka Chemical Co., Ltd.Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
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Publication number: 20030134947Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.Type: ApplicationFiled: November 25, 2002Publication date: July 17, 2003Applicant: BRIDGESTONE CORPORATION, OTSUKA CHEMICAL CO., LTD.Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
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Patent number: 6525121Abstract: A rubber composition containing, per 100 parts by weight of a vulcanizable rubber component, 0.2 to 20 parts by weight of an ester compound obtained by a reaction of alcohols with a fatty acid having a conjugated linoleic acid content of 40% by weight or more, which is markedly excellent in processability in the unvulcanized state and which has an excellent low heat-generating property without deteriorating mechanical properties after vulcanization and is excellent in adhesion between steel and vulcanized rubber.Type: GrantFiled: January 19, 2000Date of Patent: February 25, 2003Assignee: Bridgestone CorporationInventors: Daisuke Nohara, Susumu Kusakawa, Seizo Saito
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Patent number: 6515055Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.Type: GrantFiled: November 17, 2000Date of Patent: February 4, 2003Assignees: Bridgestone Corporation, Otsuka Chemical Co., Ltd.Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
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Patent number: 6497261Abstract: This invention relates to a pneumatic tire comprising a tread at least a surface portion of which is made of a foamed rubber composition, the foamed rubber composition including closed cells formed by compounding a foaming agent and a foaming assistant which contains sodium benzenesulfinate or a combination of sodium benzenesulfinate and urea.Type: GrantFiled: February 3, 2000Date of Patent: December 24, 2002Assignee: Bridgestone CorporationInventors: Yasuo Fukushima, Daisuke Nohara
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Publication number: 20020042462Abstract: An additive for a rubber composition consists essentially of an ester of (i) an aliphatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group in its molecule, or an ester of (ii) an aromatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group bonded to an aromatic ring in its molecule. And also, it relates to an additive composition, a rubber composition and a pneumatic tire using such an additive for a rubber composition.Type: ApplicationFiled: August 8, 2001Publication date: April 11, 2002Applicant: BRIDGESTONE CORPORATIONInventors: Daisuke Nohara, Jingo Shirasaka, Isao Nishi, Masaaki Tsuchihashi, Tetsuo Takano
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Patent number: 6187843Abstract: A rubber composition for use in a tread of a pneumatic tire comprises particular amounts of particular nitrogen-containing compound and particular proton acid or derivative thereof based on 100 parts by weight of rubber ingredient, and develops an excellent gripping performance.Type: GrantFiled: June 19, 1996Date of Patent: February 13, 2001Assignee: Bridgestone CorporationInventors: Daisuke Nohara, Kazuya Hatakeyama
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Patent number: 6135180Abstract: A rubber composition for a tire tread comprising a foamed rubber composition prepared by blending 100 parts by weight of at least one rubber component selected from the group consisting of natural rubber and diene based synthetic rubbers with 1 to 40 parts by weight of a thermoplastic resin having a melting point of 120 to 130.degree. C., a density of 0.92 to 0.935 and a softening point of 80 to 110.degree. C., and a pneumatic tire using the above rubber composition for a tire tread part. The above thermoplastic resin is preferably a linear polyethylene or a modified linear polyethylene obtained by modifying a part of a linear polyethylene.Type: GrantFiled: June 30, 1999Date of Patent: October 24, 2000Assignee: Bridgestone CorporationInventor: Daisuke Nohara
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Patent number: 6008304Abstract: An additive for masticating natural rubber comprising at least one compound selected from the group consisting of benzoic acids, naphthoic acids, dicarboxylic acids and compounds represented by Formula (IV): ##STR1## wherein m and n each represent an integer of 1 to 3; p represents an integer of 1 to 4; m+n+p=6; X is O, NR.sup.8 or (R.sup.9 O).sub.q ; R.sup.6 is a C.sub.1 .about.C.sub.24 alkyl, a C.sub.2 .about.C.sub.24 alkenyl, or a C.sub.6 .about.C.sub.24 aryl group; and R.sup.7 is H, OH, an alkyl, alkenyl or aryl group; R.sup.8 is H or a C.sub.1 .about.C.sub.24 alkyl group; R.sup.9 is a C.sub.1 .about.C.sub.4 alkyl group; q is an integer of 1 to 5, a mastication method and a natural rubber composition each of which uses the additive, and a pneumatic tire using the natural rubber composition.Type: GrantFiled: March 24, 1998Date of Patent: December 28, 1999Assignees: Bridgestone Corporation, KAO CorporationInventors: Daisuke Nohara, Masaaki Tsuchihashi, Isao Nishi