Patents by Inventor Shinichi Musha
Shinichi Musha 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: 20230331880Abstract: A rubber composition contains a rubber component, an organic phosphoric acid compound having at least one alkyl chain, a vulcanizing agent, and a vulcanization accelerator. A content of a cobalt-containing compound is 0.00 parts by mass or more and less than 0.01 parts by mass as converted to a cobalt amount per 100 parts by mass of the rubber component. A content of N,N-dicyclohexyl-2-benzothiazolylsulfenamide is 0.00 parts by mass or more and less than 0.08 parts by mass per 100 parts by mass of the rubber component. The rubber composition can be used to produce a rubber-metal composite excellent in heat-resistant adhesion between a vulcanized rubber and a metal.Type: ApplicationFiled: October 1, 2021Publication date: October 19, 2023Applicant: BRIDGESTONE CORPORATIONInventors: Aya SAIKI, Shinichi MUSHA
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Publication number: 20220048339Abstract: Provided is a tire capable of maintaining excellent appearance over a long time. A tire comprises a polyurethane foam layer laminated on an outer layer of the tire, wherein, in the polyurethane foam layer, a binder layer is provided on a surface of a polyurethane foam.Type: ApplicationFiled: September 12, 2019Publication date: February 17, 2022Applicant: BRIDGESTONE CORPORATIONInventors: Shinichi MUSHA, Yohei TAKEDA, Tomohiro URATA, Taisuke NAKAMURA
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Publication number: 20200307133Abstract: Provided is a tire on which cracks on sidewall portion outer surfaces are unlikely to progress. The tire comprises a depthwise structure on at least a part of a sidewall portion, the depthwise structure comprising, in a depth direction from a point on a sidewall portion outer surface, a depthwise part from the sidewall portion outer surface to 0.5 mm and a depthwise part II from 0.5 mm to 1.0 mm, wherein: the depthwise part I and the depthwise part II satisfy: the depthwise part I: peak temperature T1 of tan ? is ?20° C. or more and ?5° C. or less, and when tang at the peak temperature T1 is ?1 and storage modulus at the peak temperature T1 is E?1, ?1?0.90 and E?1?5 MPa; and the depthwise part II: when tan ? at peak temperature T1 is ?2, and storage modulus at peak temperature T1 is E?2, ?2<?1 and E?2<E?1.Type: ApplicationFiled: December 2, 2016Publication date: October 1, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Seiichi TAHARA, Shinichi MUSHA, Tomohiro URATA, Tatsuya NOMOTO
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Patent number: 10760211Abstract: This disclosure is to provide a brass-plated steel wire for reinforcing a rubber article, which is capable of improving the initial adhesiveness, heat-resistant adhesiveness and initial adhesion rate. This disclosure is a brass-plated steel wire for reinforcing a rubber article, wherein: when measured with XPS (X-ray photoelectron spectroscopy), an outermost surface contains zinc at an amount of 4.8 atom % or less, phosphorus at an amount of 0.5 atom % or more, and oxygen at an amount of 50 atom % or less; and in the outermost surface, an atomic ratio of copper to zinc is 1 to 6.Type: GrantFiled: April 6, 2015Date of Patent: September 1, 2020Assignee: BRIDGESTONE CORPORATIONInventors: Shinichi Musha, Yoshihiko Kanatomi, Junichi Yamagishi
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Publication number: 20200148860Abstract: Provided is a rubber composition capable of providing a vulcanized rubber excellent in fracture resistance, crack resistance, and low heat generation property. The rubber composition comprises a rubber component (A), a carbon black (B) having a CTAB specific surface area of 30-110 m2/g and a silica (C) having a CTAB specific surface area of 200 m2/g or larger. The total amount of the amount (b) of the carbon black (B) and the amount (c) of the silica (C) is 30-80 parts by mass relative to 100 parts by mass of the rubber component (A), and (b):(c)=(70-85):(30-15).Type: ApplicationFiled: January 10, 2020Publication date: May 14, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Yoshihiko KANATOMI, Shinichi MUSHA, Satoshi HAMATANI
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Patent number: 10544287Abstract: The rubber composition of the present invention is prepared by mixing a rubber component (A), zinc oxide (B), and a co-condensate (C) having a softening point of 150° C. or lower and containing a p-tert-butylphenol-derived constituent unit represented by the following formula (1), an o-phenylphenol-derived constituent unit represented by the following formula (2) and a resorcinol-derived constituent unit represented by the following formula (3), wherein the nitrogen adsorption specific surface area (N2SA) of the zinc oxide (B) measured according to the BET method is 6 m2/g or more and 110 m2/g or less, the mixing amount of the zinc oxide (B) is 5 parts by mass or more and 13 parts by mass or less based on 100 parts by mass of the rubber component (A), and the mixing amount of the co-condensate (C) is 0.1 parts by mass or more and 10 parts by mass or less based on 100 parts by mass of the rubber component (A).Type: GrantFiled: September 28, 2015Date of Patent: January 28, 2020Assignee: BRIDGESTONE CORPORATIONInventors: Junichi Yamagishi, Shinichi Musha, Yoshihiko Kanatomi
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Publication number: 20180371291Abstract: An object of the present invention is to provide a coating composition that is capable of providing a cured film excellent in adhesion to a base material and flexural fatigue resistance. Another object of the present invention is to provide a cured film obtained from the coating composition, and a laminate and a tire each having the cured film formed thereon. The coating composition of the present invention contains a polythiol compound (A), a polyurethane having an ethylenically unsaturated group (B), and a radical generator (C).Type: ApplicationFiled: December 15, 2016Publication date: December 27, 2018Applicant: BRIDGESTONE CORPORATIONInventors: Tomohiro URATA, Shinichi MUSHA, Kotaro HAYAKAWA, Tatsuya FUNAKI, Akihide OOSAKU
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Publication number: 20180345737Abstract: Provided is a tire on which cracks on sidewall portion outer surfaces are unlikely to progress. The tire comprises a depthwise part I from a point on a sidewall portion outer surface to 0.5 mm on at least a part of a sidewall portion, wherein: the depthwise part I satisfies the following requirement: the depthwise part I: comprising a natural rubber, a butadiene rubber, and a thermoplastic elastomer; a peak temperature T1 (° C.) of tan ? is ?20° C. or more and ?5° C. or less; and when tan ? at the peak temperature T1 (° C.) is ?1 and a storage modulus at the peak temperature T1 (° C.) is E?1 (MPa), ?1?0.90 and E?1?MPa.Type: ApplicationFiled: December 2, 2016Publication date: December 6, 2018Applicant: BRIDGESTONE CORPORATIONInventors: Seiichi TAHARA, Shinichi MUSHA, Tomohiro URATA, Tatsuya NOMOTO
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Publication number: 20170233557Abstract: The rubber composition of the present invention is prepared by mixing a rubber component (A), zinc oxide (B), and a co-condensate (C) having a softening point of 150° C. or lower and containing a p-tert-butylphenol-derived constituent unit represented by the following formula (1), an o-phenylphenol-derived constituent unit represented by the following formula (2) and a resorcinol-derived constituent unit represented by the following formula (3), wherein the nitrogen adsorption specific surface area (N2SA) of the zinc oxide (B) measured according to the BET method is 6 m2/g or more and 110 m2/g or less, the mixing amount of the zinc oxide (B) is 5 parts by mass or more and 13 parts by mass or less based on 100 parts by mass of the rubber component (A), and the mixing amount of the co-condensate (C) is 0.1 parts by mass or more and 10 parts by mass or less based on 100 parts by mass of the rubber component (A).Type: ApplicationFiled: September 28, 2015Publication date: August 17, 2017Applicant: BRIDGESTONE CORPORATIONInventors: Junichi YAMAGISHI, Shinichi MUSHA, Yoshihiko KANATOMI
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Patent number: 9708464Abstract: A rubber-metal composite body constituted of a rubber composition and a metal material embedded therein is conventionally used in a rubber article requiring high strength in order to reinforce rubber to improve strength and durability thereof. The present invention provides a rubber composition having good initial adhesive properties and good heat resistant adhesive properties with respect to a metal material, mainly for use in the rubber-metal composite body as described above. Specifically, the present invention provides a rubber composition, containing a cobalt compound by an amount, according to cobalt atoms, in the range of 0.0025 to 0.05 parts by mass with respect to 100 parts by mass of a rubber component.Type: GrantFiled: March 22, 2013Date of Patent: July 18, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Shinichi Musha, Junichi Yamagishi
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Publication number: 20170121904Abstract: This disclosure is to provide a brass-plated steel wire for reinforcing a rubber article, which is capable of improving the initial adhesiveness, heat-resistant adhesiveness and initial adhesion rate. This disclosure is a brass-plated steel wire for reinforcing a rubber article, wherein: when measured with XPS (X-ray photoelectron spectroscopy), an outermost surface contains zinc at an amount of 4.8 atom % or less, phosphorus at an amount of 0.5 atom % or more, and oxygen at an amount of 50 atom % or less; and in the outermost surface, an atomic ratio of copper to zinc is 1 to 6.Type: ApplicationFiled: April 6, 2015Publication date: May 4, 2017Applicant: BRIDGESTONE CORPORATIONInventors: Shinichi MUSHA, Yoshihiko KANATOMI, Junichi YAMAGISHI
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Publication number: 20170101736Abstract: This disclosure is to provide a brass-plated steel wire for reinforcing a rubber article, which is capable of improving overvulcanization adhesiveness. This disclosure is a brass-plated steel wire for reinforcing a rubber article, wherein: when measured with XPS (X-ray photoelectron spectroscopy), an outermost surface contains zinc at an amount of 4.93 to 14 atom %, and contains oxygen at an amount of 50 atom % or less; and in the outermost surface, an atomic ratio of copper to zinc is more than 2.33 and 6 or less.Type: ApplicationFiled: April 6, 2015Publication date: April 13, 2017Applicant: BRIDGESTONE CORPORATIONInventors: Shinichi MUSHA, Junichi YAMAGISHI
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Publication number: 20160122944Abstract: Provide are a rubber composition which is excellent in an initial adhesive property and a hygrothermal adhesive property with metals, a rubber-metal composite suited to rubber articles such as tires for automobiles, industrial belts and the like to which a strength is required, and a production method for the same. The metal cord-rubber composite of the present invention is prepared by coating a metal cord with a rubber composition, wherein an N atom on a surface of the metal cord accounts for 2 atomic % or more and 60 atomic % or less, and a Cu/Zn ratio is 1 or more and 4 or less.Type: ApplicationFiled: May 28, 2014Publication date: May 5, 2016Applicant: BRIDGESTONE CORPORATIONInventors: Shinichi MUSHA, Yoshihiko KANATOMI, Junichi YAMAGISHI
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Patent number: 9169803Abstract: A seal member (3) is disposed between a cylinder head cover (1) in which an ignition plug mounting hole (1a) is formed and a plug tube (2) which is inserted in the ignition plug mounting hole (1a). The seal member (3) is provided with: a base section (31) configured to be elastically deformable and inserted into the ignition plug mounting hole (1a); a protrusion section (32) formed so as to protrude outward in the radial direction from the outer peripheral surface of the base section (31) and engaging with a groove (12b) formed in the inner peripheral surface of the ignition plug mounting hole (1a); a seal lip section (33) in elastic contact with the outer peripheral surface of the plug tube (2); and a grip section (34) formed between the base section (31) and the seal lip section (33) and protruding downward from the ignition plug mounting hole (1a).Type: GrantFiled: April 2, 2012Date of Patent: October 27, 2015Assignees: HONDA MOTOR CO., LTD., MAHLE FILTER SYSTEMS JAPAN CORPORATIONInventors: Yoshihiro Akiyama, Shinichi Musha
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Publication number: 20150050506Abstract: A rubber-metal composite body constituted of a rubber composition and a metal material embedded therein is conventionally used in a rubber article requiring high strength in order to reinforce rubber to improve strength and durability thereof. The present invention provides a rubber composition having good initial adhesive properties and good heat resistant adhesive properties with respect to a metal material, mainly for use in the rubber-metal composite body as described above. Specifically, the present invention provides a rubber composition, containing a cobalt compound by an amount, according to cobalt atoms, in the range of 0.0025 to 0.05 parts by mass with respect to 100 parts by mass of a rubber component.Type: ApplicationFiled: March 22, 2013Publication date: February 19, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Shinichi Musha, Junichi Yamagishi
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Publication number: 20140020647Abstract: A seal member (3) is disposed between a cylinder head cover (1) in which an ignition plug mounting hole (1a) is formed and a plug tube (2) which is inserted in the ignition plug mounting hole (1a). The seal member (3) is provided with: a base section (31) configured to be elastically deformable and inserted into the ignition plug mounting hole (1a); a protrusion section (32) formed so as to protrude outward in the radial direction from the outer peripheral surface of the base section (31) and engaging with a groove (12b) formed in the inner peripheral surface of the ignition plug mounting hole (1a); a seal lip section (33) in elastic contact with the outer peripheral surface of the plug tube (2); and a grip section (34) formed between the base section (31) and the seal lip section (33) and protruding downward from the ignition plug mounting hole (1a).Type: ApplicationFiled: April 2, 2012Publication date: January 23, 2014Applicants: MAHLE Filter Systems Japan Corporation, HONDA MOTOR CO., LTD.Inventors: Yoshihiro Akiyama, Shinichi Musha
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Patent number: 8202626Abstract: A brass-plated steel wire for reinforcing rubber articles capable of surely improving adhesiveness between brass-plated steel wire and rubber and a method for manufacturing the same.Type: GrantFiled: August 30, 2006Date of Patent: June 19, 2012Assignee: Kabushiki Kaisha BridgestoneInventors: Shinichi Musha, Kiyotaka Sueyoshi
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Patent number: 7811709Abstract: A negative electrode for a non-aqueous electrolyte secondary cell includes a current collector an, formed on a surface or both surfaces thereof, an active material structure containing an electroconductive material with a low capability of forming a compound with lithium, and the active material structure includes 5% to 80% by weight of active material particles containing a material having a high capability for forming a compound with lithium. The active material structure can include an active material layer containing the active material particles and a surface-covering layer on the active material layer.Type: GrantFiled: November 25, 2003Date of Patent: October 12, 2010Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Shinichi Musha, Hitohiko Honda, Yoshiki Sakaguschi, Kiyotaka Yasuda, Akihiro Modeki, Tomoyoshi Matsushima, Takeo Taguchi, Kazuko Taniguchi, Makoto Dobashi
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Publication number: 20090155620Abstract: Problems to be solved by the invention: It is an object of the present invention to provide a brass-plated steel wire for reinforcing rubber articles capable of surely improving adhesiveness between brass-plated steel wire and rubber and a method for manufacturing the same. Means for solving the problem: A brass-plated steel wire 10 for reinforcing rubber articles according to the invention comprises a steel wire having a brass-plating layer 11 thereon, wherein the brass-plating layer 11 has an amorphous portion 11a formed of crystal grains having a grain size of 20 nm or less. It may also be such that the brass-plating layer 11 is of a laminated structure 13 of an amorphous portion 11a on the surface side and a crystalline portion 11b on the inner side, wherein the amorphous portion 11a is formed of crystal grains having a grain size of 20 nm or less and the crystalline portion 11b is formed of crystal grains having a grain size of more than 20 nm.Type: ApplicationFiled: August 30, 2006Publication date: June 18, 2009Applicant: KABUSHIKI KAISHA BRIDGESTONEInventors: Shinichi Musha, Kiyotaka Sueyoshi
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Publication number: 20060147802Abstract: A negative electrode for nonaqueous secondary batteries is disclosed. The negative electrode has a pair of current collecting surface layers of which the surfaces are adapted to be brought into contact with an electrolyte and at least one active material layer interposed between the surface layers. The active material layer contains particles of an active material having high capability of forming a lithium compound. The material constituting the surfaces is preferably present over the whole thickness of the active material layer to electrically connect the surfaces so that the electrode exhibits a current collecting function as a whole. The surface layers each preferably have a thickness of 0.3 to 10 ?m.Type: ApplicationFiled: January 5, 2005Publication date: July 6, 2006Inventors: Kiyotaka Yasuda, Yoshiki Sakaguchi, Shinichi Musha, Makoto Dobashi, Akihiro Modeki, Tomoyoshi Matsushima, Hitohiko Honda, Takeo Taguchi