Patents by Inventor Tsuyoshi Tsuchida

Tsuyoshi Tsuchida 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: 11124632
    Abstract: The present invention provides a rubber composition for tires which provides significantly improved abrasion resistance while maintaining fuel economy, and a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires including: a silane coupling agent containing an alkoxysilyl group and a sulfur atom, the alkoxysilyl group being linked to the sulfur atom by six or more carbon atoms; and sulfur, the rubber composition including, per 100 parts by mass of the rubber component therein, 1.5 parts by mass or less of the sulfur.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: September 21, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Tsuyoshi Tsuchida
  • Publication number: 20210002460
    Abstract: A pneumatic tire comprising a tread composed of a rubber composition, the rubber composition containing 30 to 120 parts by mass of silica having a BET specific surface area of 180 to 280 m2/g based on 100 parts by mass of a rubber component, wherein, under a normal state with no load where the pneumatic tire is mounted with a normal rim and filled with a normal internal pressure, a grounding surface shape in which a normal load is applied and the tread is pressed against a plane surface satisfies the following equation (1): 0.95?SL0/SL80?1.6 (wherein, SL0 is a ground contact length in a circumferential direction of the tire on a tire equator, and SL80 is a ground contact length in a circumferential direction of the tire on a position away from the tire equator by a distance in a tire axial direction of 80% of a tread grounding half width.
    Type: Application
    Filed: November 21, 2018
    Publication date: January 7, 2021
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryoji KOJIMA, Tsuyoshi TSUCHIDA, Yukari TOMISAKI
  • Patent number: 10808082
    Abstract: Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of ?20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine)3?(Volume V of polymer ready for introduction into kneading machine)?2.0×104 cm3??(I).
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: October 20, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Yukari Tomisaki, Ryoji Kojima, Tsuyoshi Tsuchida, Ayaka Kitaou
  • Publication number: 20190375920
    Abstract: The present invention provides a rubber composition for tires which provides significantly improved abrasion resistance while maintaining fuel economy, and a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires including: a silane coupling agent containing an alkoxysilyl group and a sulfur atom, the alkoxysilyl group being linked to the sulfur atom by six or more carbon atoms; and sulfur, the rubber composition including, per 100 parts by mass of the rubber component therein, 1.5 parts by mass or less of the sulfur.
    Type: Application
    Filed: January 29, 2018
    Publication date: December 12, 2019
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Tsuyoshi TSUCHIDA
  • Patent number: 10479880
    Abstract: Provided are a rubber composition for tires which achieves both abrasion resistance and processability while maintaining fuel economy, and a pneumatic tire including the rubber composition. A rubber composition for tires, containing an organosilicon compound represented by the average compositional formula (I) below having a ratio of the number of sulfur atoms to the number of silicon atoms of 1.0 to 1.5, wherein x represents the average number of sulfur atoms; m represents an integer of 6 to 12; and R1 to R6 are the same or different and each represent a C1-C6 alkyl or alkoxy group, at least one of R1 to R3 and at least one of R4 to R6 are the alkoxy groups, and two or more of the alkyl or alkoxy groups for R1 to R6 may be joined to form a ring.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 19, 2019
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Ryuichi Tokimune, Tsuyoshi Tsuchida, Ryota Kitago, Soh Ishino, Hiroyuki Kishimoto, Munenao Hirokami, Tetsuro Yamada
  • Publication number: 20190300658
    Abstract: Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of ?20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine)3?(Volume V of polymer ready for introduction into kneading machine)?2.0×104 cm3??(I).
    Type: Application
    Filed: June 17, 2019
    Publication date: October 3, 2019
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Yukari TOMISAKI, Ryoji KOJIMA, Tsuyoshi TSUCHIDA, Ayaka KITAOU
  • Patent number: 10137733
    Abstract: Provided is a pneumatic tire including a tread formed from a predetermined rubber composition to achieve greatly improved abrasion resistance while maintaining good wet-grip performance and good durability. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing predetermined amounts of a specific oil-extended polybutadiene rubber, of an isoprene-based diene rubber and/or a styrene-butadiene rubber, of a specific carbon black, and of stearic acid, the oil-extended polybutadiene rubber being synthesized using a rare earth catalyst, the rubber composition having an amount of process oil of a predetermined value or less.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: November 27, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tsuyoshi Tsuchida, Tatsuya Miyazaki
  • Patent number: 10046600
    Abstract: Provided is a pneumatic tire including a tread formed from a specified rubber composition, thereby achieving a balanced improvement in fuel economy, wet-grip performance, and abrasion resistance while simultaneously having excellent durability. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing: an oil-extended BR having a cis content of 95 mol % or more, a vinyl content of 1 mol % or less, and a weight average molecular weight of 530,000 or more; a SBR having a bound styrene content of 30-50% by mass and a weight average molecular weight of 700,000 or more; silica; and carbon black, the oil-extended BR being synthesized using a rare earth catalyst, the rubber composition containing, based on 100% by mass of rubber solids, 10-67% by mass of the BR component contained in the oil-extended BR and 10-50% by mass of the SBR.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: August 14, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tsuyoshi Tsuchida, Tatsuya Miyazaki, Soh Ishino
  • Publication number: 20180118896
    Abstract: Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of ?20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine)3?(Volume V of polymer ready for introduction into kneading machine)?2.0×104 cm3 ?? (I).
    Type: Application
    Filed: October 16, 2017
    Publication date: May 3, 2018
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Yukari TOMISAKI, Ryoji KOJIMA, Tsuyoshi TSUCHIDA, Ayaka KITAOU
  • Publication number: 20180112065
    Abstract: Provided are a rubber composition for tires which achieves both abrasion resistance and processability while maintaining fuel economy, and a pneumatic tire including the rubber composition. A rubber composition for tires, containing an organosilicon compound represented by the average compositional formula (I) below having a ratio of the number of sulfur atoms to the number of silicon atoms of 1.0 to 1.5, wherein x represents the average number of sulfur atoms; m represents an integer of 6 to 12; and R1 to R6 are the same or different and each represent a C1-C6 alkyl or alkoxy group, at least one of R1 to R3 and at least one of R4 to R6 are the alkoxy groups, and two or more of the alkyl or alkoxy groups for R1 to R6 may be joined to form a ring.
    Type: Application
    Filed: September 21, 2017
    Publication date: April 26, 2018
    Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Ryuichi TOKIMUNE, Tsuyoshi TSUCHIDA, Ryota KITAGO, Soh ISHINO, Hiroyuki KISHIMOTO, Munenao HIROKAMI, Tetsuro YAMADA
  • Patent number: 9855798
    Abstract: The inner liner is composed of a polymer layer stack including a first layer containing an SIBS and a second layer containing at least one of an SIS and an SIB. At least one of the first layer and the second layer is a polymer composition containing one of a C4 polymer obtained by polymerizing a monomer unit having 4 carbon atoms, a layered clay mineral with an organic compound intercalated therein and at least one kind of rubber component selected from the group consisting of a natural rubber, an isoprene rubber and a butyl rubber. The second layer is arranged to come into contact with a rubber layer of the carcass ply. The inner liner has a thickness Ge at a shoulder position Pe exceeding 100% and being less than or equal to 500% of a thickness Gc at a crown central position Pc.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: January 2, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mutsuki Sugimoto, Tsuyoshi Tsuchida, Tomomi Masui, Reika Otake
  • Publication number: 20170233545
    Abstract: The present invention provides a pneumatic tire having improved rubber tensile strength, fuel economy, and handling stability. The present invention relates to a pneumatic tire formed from a rubber composition, the rubber composition containing: a hydrogenated copolymer obtained by copolymerization of an aromatic vinyl compound and a conjugated diene compound, the hydrogenated copolymer having a degree of hydrogenation of the conjugated diene units of 75 mol % or more; and carbon black, the rubber composition containing, per 100% by mass of the rubber component, 75% by mass or more of the hydrogenated copolymer, the rubber composition containing, relative to 100 parts by mass of the rubber component, 30 to 80 parts by mass of the carbon black.
    Type: Application
    Filed: July 10, 2015
    Publication date: August 17, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Tsuyoshi TSUCHIDA
  • Publication number: 20170151834
    Abstract: Provided is a pneumatic tire having improved air permeability resistance by improving adhesive property between an inner liner and a tire component adjacent thereto, reduced rolling resistance, and improved low temperature durability. The inner liner is composed of a polymer layer stack including a first layer containing an SIBS and a second layer containing at least one of an SIS and an SIB. At least one of the first layer and the second layer is a polymer composition containing one of a C4 polymer obtained by polymerizing a monomer unit having 4 carbon atoms, a layered clay mineral with an organic compound intercalated therein and at least one kind of rubber component selected from the group consisting of a natural rubber, an isoprene rubber and a butyl rubber. The second layer is arranged to come into contact with a rubber layer of the carcass ply.
    Type: Application
    Filed: February 13, 2017
    Publication date: June 1, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mutsuki SUGIMOTO, Tsuyoshi TSUCHIDA, Tomomi MASUI, Reika OTAKE
  • Publication number: 20160263942
    Abstract: Provided is a pneumatic tire including a tread formed from a predetermined rubber composition to achieve greatly improved abrasion resistance while maintaining good wet-grip performance and good durability. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing predetermined amounts of a specific oil-extended polybutadiene rubber, of an isoprene-based diene rubber and/or a styrene-butadiene rubber, of a specific carbon black, and of stearic acid, the oil-extended polybutadiene rubber being synthesized using a rare earth catalyst, the rubber composition having an amount of process oil of a predetermined value or less.
    Type: Application
    Filed: October 21, 2014
    Publication date: September 15, 2016
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tsuyoshi TSUCHIDA, Tatsuya MIYAZAKI
  • Publication number: 20160200901
    Abstract: Provided is a pneumatic tire including a tread formed from a specified rubber composition, thereby achieving a balanced improvement in fuel economy, wet-grip performance, and abrasion resistance while simultaneously having excellent durability. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing: an oil-extended BR having a cis content of 95 mol % or more, a vinyl content of 1 mol % or less, and a weight average molecular weight of 530,000 or more; a SBR having a bound styrene content of 30-50% by mass and a weight average molecular weight of 700,000 or more; silica; and carbon black, the oil-extended BR being synthesized using a rare earth catalyst, the rubber composition containing, based on 100% by mass of rubber solids, 10-67% by mass of the BR component contained in the oil-extended BR and 10-50% by mass of the SBR.
    Type: Application
    Filed: August 18, 2014
    Publication date: July 14, 2016
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tsuyoshi TSUCHIDA, Tatsuya MIYAZAKI, Soh ISHINO
  • Patent number: 9012560
    Abstract: The present invention provides a rubber composition that can enhance the fuel economy, wet-grip performance, and abrasion resistance in a balanced manner, and a pneumatic tire using this rubber composition. The present invention relates to a rubber composition that contains a rubber component, silica, and a silane coupling agent, wherein the rubber component contains, based on 100% by mass of the rubber component, not less than 5% by mass of a conjugated diene polymer containing a constituent unit based on a conjugated diene and a constituent unit represented by formula (I) below, at least one terminal of the polymer being modified with a specific compound; an amount of the silica is 5 to 150 parts by mass per 100 parts by mass of the rubber component; and the silane coupling agent contains a mercapto group.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: April 21, 2015
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Tetsuya Kunisawa, Tsuyoshi Tsuchida, Kenichi Uesaka, Isamu Tsumori, Reika Otake, Noboru Okabe, Naoya Omura, Tatsuhiro Tanaka, Takafumi Taguchi, Kenya Watanabe, Toru Iizuka
  • Publication number: 20140138005
    Abstract: The inner liner is composed of a polymer layer stack including a first layer containing an SIBS and a second layer containing at least one of an SIS and an SIB. At least one of the first layer and the second layer is a polymer composition containing one of a C4 polymer obtained by polymerizing a monomer unit having 4 carbon atoms, a layered clay mineral with an organic compound intercalated therein and at least one kind of rubber component selected from the group consisting of a natural rubber, an isoprene rubber and a butyl rubber. The second layer is arranged to come into contact with a rubber layer of the carcass ply. The inner liner has a thickness Ge at a shoulder position Pe exceeding 100% and being less than or equal to 500% of a thickness Gc at a crown central position Pc.
    Type: Application
    Filed: April 10, 2012
    Publication date: May 22, 2014
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mutsuki Sugimoto, Tsuyoshi Tsuchida, Tomomi Masui, Reika Otake
  • Publication number: 20130303679
    Abstract: The present invention provides a rubber composition that can enhance the fuel economy, wet-grip performance, and abrasion resistance in a balanced manner, and a pneumatic tire using this rubber composition. The present invention relates to a rubber composition that contains a rubber component, silica, and a silane coupling agent, wherein the rubber component contains, based on 100% by mass of the rubber component, not less than 5% by mass of a conjugated diene polymer containing a constituent unit based on a conjugated diene and a constituent unit represented by formula (I) below, at least one terminal of the polymer being modified with a specific compound; an amount of the silica is 5 to 150 parts by mass per 100 parts by mass of the rubber component; and the silane coupling agent contains a mercapto group.
    Type: Application
    Filed: March 22, 2012
    Publication date: November 14, 2013
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tetsuya Kunisawa, Tsuyoshi Tsuchida, Kenichi Uesaka, Isamu Tsumori, Reika Otake, Noboru Okabe, Naoya Omura, Tatsuhiro Tanaka, Takafumi Taguchi, Kenya Watanabe, Toru Iizuka
  • Patent number: 5062496
    Abstract: A structure for mounting an air cleaner in an engine compartment. The air cleaner is supported on an engine and a transmission having different vibration frequencies. Therefore, the frequency of an applied vibration force does not coincide with the natural frequency of the air cleaner, with the result that resonance of the air cleaner is prevented and reliability of the air cleaner is improved.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: November 5, 1991
    Assignee: Mazda Motor Corporation
    Inventors: Hirotaka Fukada, Koichi Kondoh, Tsuyoshi Tsuchida
  • Patent number: D930251
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: September 7, 2021
    Assignee: Aderans Company Limited
    Inventors: Yoshihiro Tsumura, Hitoshi Tanaka, Tsuyoshi Teraoka, Masashi Tsuchida