Patents by Inventor Masataka Hiro
Masataka Hiro 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: 11312191Abstract: A pneumatic tire 1 comprises a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tire radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tire 1 further comprises a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tire axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tire axial direction of the belt layer 7, and a water absorption rate of the noise damper 20 is in a range of from 10% to 25%.Type: GrantFiled: April 16, 2020Date of Patent: April 26, 2022Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masako Nakatani, Takahiro Kawachi, Ayuko Yamada, Takuya Horiguchi, Masataka Hiro, Takayuki Nagase, Hiroshi Ito, Fumiya Kato, Subaru Toya
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Publication number: 20200238768Abstract: A pneumatic tire 1 comprises a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tire radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tire 1 further comprises a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tire axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tire axial direction of the belt layer 7, and a water absorption rate of the noise damper 20 is in a range of from 10% to 25%.Type: ApplicationFiled: April 16, 2020Publication date: July 30, 2020Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Masako NAKATANI, Takahiro KAWACHI, Ayuko YAMADA, Takuya HORIGUCHI, Masataka HIRO, Takayuki NAGASE, Hiroshi ITO, Fumiya KATO, Subaru TOYA
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Publication number: 20190299722Abstract: A pneumatic tire 1 comprises a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tire radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tire 1 further comprises a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tire axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tire axial direction of the belt layer 7, and a water absorption rate of the noise damper 20 is in a range of from 10% to 25%.Type: ApplicationFiled: November 27, 2017Publication date: October 3, 2019Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Masako NAKATANI, Takahiro KAWACHI, Ayuko YAMADA, Takuya HORIGUCHI, Masataka HIRO, Takayuki NAGASE, Hiroshi ITO, Fumiya KATO, Subaru TOYA
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Publication number: 20190248182Abstract: A pneumatic tire 1 comprises a carcass 6 extending between a pair of bead portions 4, 4, an inner liner 10 arranged on an inner side in a tire radial direction of the carcass 6 and forming a tire inner cavity surface 16, and a noise damper 20 made of a porous material and fixed to the tire inner cavity surface 16 of the inner liner 10. A glass transition temperature Tg1 of the noise damper 20 is lower than a glass transition temperature Tg2 of the inner liner 10.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Masako NAKATANI, Takahiro KAWACHI, Ayuko YAMADA, Masataka HIRO, Satomi YAMAUCHI, Shuichiro ONO, Tetsuya MAEKAWA, Natsuki MAEKAWA, Subaru TOYA
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Publication number: 20190185639Abstract: The present invention provides a rubber composition for tires which is excellent in performance on ice, and a pneumatic tire formed from the rubber composition. Included is a rubber composition for tires, containing: a rubber component; a farnesene polymer; and a carbon black having a cetyltrimethylammonium bromide adsorption specific surface area of 140 m2/g or more and a ratio (CTAB/IA) of the cetyltrimethylammonium bromide adsorption specific surface area (CTAB) to an iodine adsorption number (IA) of 1.10 or higher.Type: ApplicationFiled: December 12, 2018Publication date: June 20, 2019Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yuki KASAI, Masataka HIRO, Noriyuki NISHI
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Publication number: 20190030954Abstract: [ solution] A pneumatic tire 1 comprises a carcass 6 extending between a pair of bead portions 4, 4, an inner liner 10 arranged on an inner side in a tire radial direction of the carcass 6 and forming a tire inner cavity surface 16, and a noise damper 20 made of a porous material and fixed to the tire inner cavity surface 16 of the inner liner 10. A glass transition temperature Tg1 of the noise damper 20 is lower than a glass transition temperature Tg2 of the inner liner 10.Type: ApplicationFiled: December 6, 2017Publication date: January 31, 2019Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Masako NAKATANI, Takahiro KAWACHI, Ayuko YAMADA, Masataka HIRO, Satomi YAMAUCHI, Shuichiro ONO, Tetsuya MAEKAWA, Natsuki MAEKAWA, Subaru TOYA
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Patent number: 8163821Abstract: The present invention provides: a rubber composition for a tire that achieves both good fuel economy and abrasion resistance, and also achieves good degradation resistance and processability; and a heavy-load tire having a tread produced therefrom. The present invention relates to a rubber composition for a tire, comprising a rubber component that contains a modified natural rubber having a phosphorus content of 200 ppm or less and a butadiene rubber, wherein the amount of the modified natural rubber is 60 to 95% by mass and the amount of the butadiene rubber is 5 to 40% by mass, based on 100% by mass of the rubber component.Type: GrantFiled: March 16, 2011Date of Patent: April 24, 2012Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Masataka Hiro
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Publication number: 20110230613Abstract: The present invention provides: a rubber composition for a tire that achieves both good fuel economy and abrasion resistance, and also achieves good degradation resistance and processability; and a heavy-load tire having a tread produced therefrom. The present invention relates to a rubber composition for a tire, comprising a rubber component that contains a modified natural rubber having a phosphorus content of 200 ppm or less and a butadiene rubber, wherein the amount of the modified natural rubber is 60 to 95% by mass and the amount of the butadiene rubber is 5 to 40% by mass, based on 100% by mass of the rubber component.Type: ApplicationFiled: March 16, 2011Publication date: September 22, 2011Inventor: Masataka HIRO
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Publication number: 20100168312Abstract: Abrasion resistance can be improved without impairing tip cut resistance by using polybutadiene comprising specific syndiotactic-1,2-polybutadiene in a tread rubber. Namely, the present invention provides a rubber composition for a tread which comprises a rubber component comprising 10 to 30% by weight of a butadiene rubber in which syndiotactic-1,2-polybutadiene having an average primary particle diameter of not more than 100 nm is dispersed in the butadiene rubber.Type: ApplicationFiled: December 25, 2006Publication date: July 1, 2010Inventors: Hirokazu Ishida, Masataka Hiro, Takashi Wada
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Patent number: D485802Type: GrantFiled: April 1, 2003Date of Patent: January 27, 2004Assignee: The Goodyear Tire & Rubber CompanyInventor: Masataka Hiro