Patents by Inventor Toshiro Matsuo
Toshiro Matsuo 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: 11377539Abstract: The conjugated diene-based polymer of the invention comprises an aromatic vinyl unit based on an aromatic vinyl compound and a conjugated diene unit based on a conjugated diene compound, is modified with a compound containing a heteroatom, and has an SP value of 16.80 MPa1/2 to 17.10 MPa12.Type: GrantFiled: February 14, 2019Date of Patent: July 5, 2022Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.Inventors: Jesus Rodriguez Castanon, Toshiro Matsuo, Masako Imai, Yosuke Miyazaki
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Publication number: 20190256691Abstract: The conjugated diene-based polymer of the invention comprises an aromatic vinyl unit based on an aromatic vinyl compound and a conjugated diene unit based on a conjugated diene compound, is modified with a compound containing a heteroatom, and has an SP value of 16.80 MPa1/2 to 17.10 MPa12.Type: ApplicationFiled: February 14, 2019Publication date: August 22, 2019Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.Inventors: Jesus Rodriguez CASTANON, Toshiro MATSUO, Masako IMAI, Yosuke MIYAZAKI
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Patent number: 9663445Abstract: The present invention provides a synthesis system that can synthesize aniline and/or styrene efficiently, a synthesis system that can synthesize butadiene (1,3-butadiene) efficiently, a rubber chemical for a tire which is synthesized from the aniline obtained by the synthesis system, a synthetic rubber for a tire which is synthesized from the styrene and/or butadiene obtained by the synthesis systems, and a pneumatic tire produced using the rubber chemical for a tire and/or the synthetic rubber for a tire. The present invention relates to a synthesis system for synthesizing aniline and/or styrene from an alcohol having two or more carbon atoms via an aromatic compound.Type: GrantFiled: July 16, 2015Date of Patent: May 30, 2017Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Takayuki Hattori, Takao Wada, Keitaro Fujikura, Yuka Yokoyama, Toshiro Matsuo
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Publication number: 20150315125Abstract: The present invention provides a synthesis system that can synthesize aniline and/or styrene efficiently, a synthesis system that can synthesize butadiene (1,3-butadiene) efficiently, a rubber chemical for a tire which is synthesized from the aniline obtained by the synthesis system, a synthetic rubber for a tire which is synthesized from the styrene and/or butadiene obtained by the synthesis systems, and a pneumatic tire produced using the rubber chemical for a tire and/or the synthetic rubber for a tire. The present invention relates to a synthesis system for synthesizing aniline and/or styrene from an alcohol having two or more carbon atoms via an aromatic compound.Type: ApplicationFiled: July 16, 2015Publication date: November 5, 2015Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Takayuki HATTORI, Takao WADA, Keitaro FUJIKURA, Yuka YOKOYAMA, Toshiro Matsuo
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Patent number: 9115047Abstract: The present invention provides a synthesis system that can synthesize aniline and/or styrene efficiently, a synthesis system that can synthesize butadiene (1,3-butadiene) efficiently, a rubber chemical for a tire which is synthesized from the aniline obtained by the synthesis system, a synthetic rubber for a tire which is synthesized from the styrene and/or butadiene obtained by the synthesis systems, and a pneumatic tire produced using the rubber chemical for a tire and/or the synthetic rubber for a tire. The present invention relates to a synthesis system for synthesizing aniline and/or styrene from an alcohol having two or more carbon atoms via an aromatic compound.Type: GrantFiled: January 25, 2012Date of Patent: August 25, 2015Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Takayuki Hattori, Takao Wada, Keitaro Fujikura, Yuka Yokoyama, Toshiro Matsuo
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Patent number: 8869856Abstract: A pneumatic tire capable of reducing rolling resistance and discharging static electricity generated during running, wherein each of a tread rubber, a breaker rubber, and a sidewall rubber formed on the tread part, the breaker part, and the sidewall part, respectively, has a volume specific resistivity of 1×108 ?·cm or more, the pneumatic tire further including a conduction rubber embedded in the tread part so as to be at least partially exposed to a surface of the tread part, bead part rubber disposed at a region contacting a rim flange of the bead part, and electroconductive rubber electrically connecting the conduction rubber to the beat part rubber, wherein each of the conduction rubber, the bead part rubber, and the electroconductive rubber has a volume specific resistivity of less than 108 ?·cm.Type: GrantFiled: June 2, 2008Date of Patent: October 28, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Tetsuya Kunisawa, Keiichi Nakadera, Toru Iizuka, Takao Wada, Shinichi Miyazaki, Toshiro Matsuo
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Patent number: 8686085Abstract: The present invention has its object to provide a rubber composition having excellent low-exothermic property and high strength together, and a pneumatic tire produced using the rubber composition. The present invention relates to a rubber composition which contains a rubber component and 10 to 150 parts by mass of silica per 100 parts by mass of the rubber component. The rubber component contains a butadiene rubber modified by a compound represented by the formula (1): wherein, R1, R2 and R3 are the same or different and independently represent an alkyl group, an alkoxy group, a silyloxy group, an acetal group, a carboxyl group, a mercapto group, or a derivative thereof; R4 and R5 are the same or different and independently represent a hydrogen atom or an alkyl group; and n represents an integer.Type: GrantFiled: July 29, 2009Date of Patent: April 1, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kenichi Uesaka, Toshiro Matsuo
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Publication number: 20130090445Abstract: The present invention provides a synthesis system that can synthesize aniline and/or styrene efficiently, a synthesis system that can synthesize butadiene (1,3-butadiene) efficiently, a rubber chemical for a tire which is synthesized from the aniline obtained by the synthesis system, a synthetic rubber for a tire which is synthesized from the styrene and/or butadiene obtained by the synthesis systems, and a pneumatic tire produced using the rubber chemical for a tire and/or the synthetic rubber for a tire. The present invention relates to a synthesis system for synthesizing aniline and/or styrene from an alcohol having two or more carbon atoms via an aromatic compound.Type: ApplicationFiled: January 25, 2012Publication date: April 11, 2013Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Takayuki Hattori, Takao Wada, Keitaro Fujikura, Yuka Yokoyama, Toshiro Matsuo
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Patent number: 7829621Abstract: A rubber composition which provides an improved balance in grip performance, grip durability and abrasion resistance, and a tire and/or tire tred made from the same Wherein the rubber composition includes a diene rubber, 50 to 120 parts by weight of a reinforcing agent containing particular carbon black and 10 to 100 parts by weight of silica based on 100 parts by weight of a the diene rubber, 2 to 50 parts by weight of a styrene-butadiene polymer, in which weight average molecular weight is 1,000 to 15,000, the amount of a styrene being 17 to 27% by weight and the amount of vinyl being 60 to 80% by weight, and 2 to 25 parts by weight of an indene resin, in which the melting point is 100 to 150° C., based on 100 parts by weight of the diene rubber which includes at least 60% by weight of a particular solution polymerization styrene-butadiene rubber and at most 40% by weight of a natural rubber and/or a butadiene rubber.Type: GrantFiled: September 26, 2005Date of Patent: November 9, 2010Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Tetsuya Kunisawa, Toshiro Matsuo, Takuya Horiguchi, Takashi Nakamura
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Publication number: 20100084065Abstract: The present invention has its object to provide a rubber composition having excellent low-exothermic property and high strength together, and a pneumatic tire produced using the rubber composition. The present invention relates to a rubber composition which contains a rubber component and 10 to 150 parts by mass of silica per 100 parts by mass of the rubber component. The rubber component contains a butadiene rubber modified by a compound represented by the formula (1): wherein, R1, R2 and R3 are the same or different and independently represent an alkyl group, an alkoxy group, a silyloxy group, an acetal group, a carboxyl group, a mercapto group, or a derivative thereof; R4 and R5 are the same or different and independently represent a hydrogen atom or an alkyl group; and n represents an integer.Type: ApplicationFiled: July 29, 2009Publication date: April 8, 2010Inventors: Kenichi Uesaka, Toshiro Matsuo
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Publication number: 20080308203Abstract: A pneumatic tire capable of reducing rolling resistance and discharging static electricity generated during running, wherein each of a tread rubber, a breaker rubber, and a sidewall rubber formed on the tread part, the breaker part, and the sidewall part, respectively, has a volume specific resistivity of 1×108 ?·cm or more, the pneumatic tire further including a conduction rubber embedded in the tread part so as to be at least partially exposed to a surface of the tread part, bead part rubber disposed at a region contacting a rim flange of the bead part, and electroconductive rubber electrically connecting the conduction rubber to the beat part rubber, wherein each of the conduction rubber, the bead part rubber, and the electroconductive rubber has a volume specific resistivity of less than 108 ?·cm.Type: ApplicationFiled: June 2, 2008Publication date: December 18, 2008Inventors: Tetsuya Kunisawa, Keiichi Nakadera, Toru Iizuka, Takao Wada, Shinichi Miyazaki, Toshiro Matsuo
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Patent number: 7235599Abstract: There is provided a racing tire improving grip performance, processability and rubber strength at a high temperature in highly good balance and a rubber composition capable of producing a tread having thereof. A rubber composition comprising 70 to 150 parts by weight of carbon black with a nitrogen adsorption specific area of 100 to 300 m2/g based on 100 parts by weight of a rubber component comprising a solution polymerization styrene-butadiene rubber satisfying the formula below: (Vinyl content)?100?2×(styrene content), 30 to 170 parts by weight of a softener and 1 to 30 parts by weight of a compound satisfying the general formula (1): —(R—Sx)n—??(1) (wherein R is —(CH2—CH2—O)m—CH2—CH2— , x is an integer of 3 to 6, n is an integer of 10 to 400 and m represents an integer of 2 to 5.).Type: GrantFiled: January 20, 2006Date of Patent: June 26, 2007Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Tetsuya Kunisawa, Toshiro Matsuo
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Patent number: 7172003Abstract: A lightweight tire with reduced rolling resistance and improved steering stability without decreasing tire durability, said tire containing a sidewall made of a rubber composition including 20 to 70 parts by weight of an inorganic filler, and 5 to 35 parts by weight of polypropylene powder, based on 100 parts by weight of a rubber component, which satisfies the following equation: (amount of polypropylene powder).gtoreq.(amount of inorganic filler+amount of polypropylene powder)/2.Type: GrantFiled: April 8, 2004Date of Patent: February 6, 2007Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Takashi Nakamura, Tetsuya Kunisawa, Toshiro Matsuo
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Publication number: 20060189746Abstract: There is provided a racing tire improving grip performance, processability and rubber strength at a high temperature in highly good balance and a rubber composition capable of producing a tread having thereof. A rubber composition comprising 70 to 150 parts by weight of carbon black with a nitrogen adsorption specific area of 100 to 300 m2/g based on 100 parts by weight of a rubber component comprising a solution polymerization styrene-butadiene rubber satisfying the formula below: (Vinyl content)?100?2×(styrene content), 30 to 170 parts by weight of a softener and 1 to 30 parts by weight of a compound satisfying the general formula (1): —(R—Sx)n—??(1) (wherein R is —(CH2—CH2—O)m—CH2—CH2— , x is an integer of 3 to 6, n is an integer of 10 to 400 and m represents an integer of 2 to 5.).Type: ApplicationFiled: January 20, 2006Publication date: August 24, 2006Inventors: Tetsuya Kunisawa, Toshiro Matsuo
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Publication number: 20060094815Abstract: The present invention provides a rubber composition which is improved in grip performance, grip durability and abrasion resistance with a highly good balance and a tire comprising the same. The present invention relates to a rubber composition comprising 50 to 120 parts by weight of a reinforcing agent containing particular carbon black and 10 to 100 parts by weight of silica based on 100 parts by weight of a diene rubber, 2 to 50 parts by weight of a styrene-butadiene polymer, in which weight average molecular weight is 1,000 to 15,000, the amount of a styrene is 17 to 27% by weight and the amount of vinyl is 60 to 80% by weight, and 2 to 25 parts by weight of an indene resin, in which the melting point is 100 to 150° C., based on 100 parts by weight of a diene rubber comprising at least 60% by weight of a particular solution polymerization styrene-butadiene rubber and at most 40% by weight of a natural rubber and/or a butadiene rubber, and a tire having a tread comprising the same.Type: ApplicationFiled: September 26, 2005Publication date: May 4, 2006Inventors: Tetsuya Kunisawa, Toshiro Matsuo, Takuya Horiguchi, Takashi Nakamura
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Publication number: 20040204532Abstract: The present invention aims to provide a lightweight tire without decreasing durability and to reduce rolling resistance and improve steering stability of the tire.Type: ApplicationFiled: April 8, 2004Publication date: October 14, 2004Inventors: Takashi Nakamura, Tetsuya Kunisawa, Toshiro Matsuo
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Patent number: 6520229Abstract: A pneumatic tire is disclosed having an improved electric conductivity and an excellent rolling resistance, which includes a tread and a conductive thin film provided on the surface of the tread continuously in the circumferential direction of the tire, wherein the conductive thin film has a thickness of not more than 0.5 mm and a volume resistivity of not more than 105 &OHgr;·cm, and the tread is made from a rubber composition comprising a diene rubber and 40 to 100 parts by weight of silica having a BET specific surface area of 100 to 300 m2/g per 100 parts by weight of the diene rubber, the content of silica being at least 50% by weight based on the whole filler incorporated in the composition. The conductive thin film may be prepared from a rubber composition comprising at least 10 parts by weight of carbon black per 100 parts by weight of a rubber.Type: GrantFiled: December 22, 1995Date of Patent: February 18, 2003Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kiyoshige Muraoka, Toshiro Matsuo
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Patent number: 6481707Abstract: A paper-feeding roller, made of a cylindrical elastic material, which is used for a printing apparatus of ink jet type, with the paper-feeding roller mounted on a core, wherein a friction coefficient (&mgr;) of the paper-feeding roller is set not less than 1.5; and the following relationship is established among the friction coefficient (&mgr;) of the paper-feeding roller, a tensile elongation E (%) thereof, and a fracture-time strength T (MPa) thereof: 15>(E×T)/(&mgr;×100)≧5.Type: GrantFiled: July 18, 2001Date of Patent: November 19, 2002Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Toshiro Matsuo, Hideyuki Okuyama
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Publication number: 20020145247Abstract: A paper-feeding roller, made of a cylindrical elastic material, which is used for a printing apparatus of ink jet type, with the paper-feeding roller mounted on a core,Type: ApplicationFiled: July 18, 2001Publication date: October 10, 2002Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Toshiro Matsuo, Hideyuki Okuyama
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Patent number: 6378584Abstract: There is provided a rubber composition for tire tread, which can provide a tire having low decrease in abrasion resistance and balanced performance of traction property, braking property and cornering property. The rubber composition for tire tread is obtained by mixing 100 parts by weight of at least one rubber component selected from the group consisting of a natural rubber, an isoprene rubber and a butadiene rubber, 5 to 45 parts by weight of a silica, 0.5 to 4.0 parts by weight of a silane coupling agent and 3 to 8 parts by weight of a powdered article containing cellulose material.Type: GrantFiled: March 12, 1999Date of Patent: April 30, 2002Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Yoichi Mizuno, Masato Kawase, Toshiro Matsuo