Patents by Inventor Naoya Ichikawa
Naoya Ichikawa 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: 11952423Abstract: A novel antibody that can be used as an anti-tumor agent and an anti-tumor agent that comprises, as an active ingredient, a molecule containing such an antibody.Type: GrantFiled: May 16, 2023Date of Patent: April 9, 2024Assignees: MIE UNIVERSITY, DAIICHI SANKYO COMPANY, LIMITEDInventors: Hiroshi Shiku, Yasushi Akahori, Kento Tanaka, Ayaka Yatsu, Junya Ichikawa, Toshiaki Ohtsuka, Shiho Kozuma, Ryuji Hashimoto, Makiko Nakayama, Naoya Shinozaki, Kensuke Nakamura, Ichiro Watanabe, Shinji Furuzono
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Patent number: 9758707Abstract: The present invention provides a tire puncture sealant which exhibits excellent storage stability while having reduced low-temperature viscosity and therefore improved low-temperature injection properties, and also exhibits excellent initial sealing properties and sealing force retention properties. The present invention relates to a tire puncture sealant containing rubber latex and 1,3-propanediol, the 1,3-propanediol being present in a proportion of 55 to 61% by mass of the liquid component.Type: GrantFiled: August 20, 2013Date of Patent: September 12, 2017Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Naoya Ichikawa
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Patent number: 9657313Abstract: The invention relates to an isoprene oligomer that contains a trans structural moiety and a cis structural moiety, which can be represented by the following formula (1), wherein at least 1 atom or group in the trans structural moiety is replaced by another atom or group. The invention also relates to a polyisoprene, which is biosynthesized using the isoprene oligomer and isopentenyl diphosphate. Further, this invention provides a rubber composition comprising the isoprene oligomer and/or the polyisoprene, and a pneumatic tire, including tire components (e.g., treads and sidewalls) formed from the rubber composition.Type: GrantFiled: April 19, 2016Date of Patent: May 23, 2017Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., YAMAGATA UNIVERSITYInventors: Yukino Miyagi, Naoya Ichikawa, Norimasa Ohya
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Patent number: 9617442Abstract: Provided is a tire puncture sealant having improved puncture sealing performance while showing excellent storage stability. The present invention relates to a tire puncture sealant including: rubber latex, a tackifying resin emulsion, and a rosin acid surfactant.Type: GrantFiled: June 26, 2013Date of Patent: April 11, 2017Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Naoya Ichikawa
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Patent number: 9481783Abstract: The present invention provides rubber compositions for tires which are capable of improving handling stability, fuel efficiency, and processability while sufficiently reducing the dependence on petroleum resources, and pneumatic tires including tire components (e.g. bead apex) formed from the rubber compositions for tires. The present invention relates to rubber compositions for tires, containing a rubber component and a naturally derived phenolic resin.Type: GrantFiled: August 2, 2012Date of Patent: November 1, 2016Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yukio Isobe, Takao Wada, Takayuki Hattori, Naoya Ichikawa
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Patent number: 9410033Abstract: The present invention provides a rubber composition for an undertread, which has improved in processability, fuel economy, and tensile properties in a balanced manner, and also provides a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for an undertread, including: a rubber component containing a modified natural rubber having a phosphorus content of 200 ppm or less; and carbon black and/or a white filler, wherein the modified natural rubber is contained in an amount of 5% by mass or more per 100% by mass of the rubber component.Type: GrantFiled: September 11, 2014Date of Patent: August 9, 2016Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yoshihiro Kagawa, Naoya Ichikawa
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Publication number: 20160222418Abstract: The invention relates to an isoprene oligomer that contains a trans structural moiety and a cis structural moiety, which can be represented by the following formula (1), wherein at least 1 atom or group in the trans structural moiety is replaced by another atom or group. The invention also relates to a polyisoprene, which is biosynthesized using the isoprene oligomer and isopentenyl diphosphate. Further, this invention provides a rubber composition comprising the isoprene oligomer and/or the polyisoprene, and a pneumatic tire, including tire components (e.g., treads and sidewalls) formed from the rubber composition.Type: ApplicationFiled: April 19, 2016Publication date: August 4, 2016Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., YAMAGATA UNIVERSITYInventors: Yukino MIYAGI, Naoya ICHIKAWA, Norimasa OHYA
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Patent number: 9371342Abstract: The invention relates to an isoprene oligomer that contains a trans structural moiety and a cis structural moiety, which can be represented by the following formula (1), wherein at least 1 atom or group in the trans structural moiety is replaced by another atom or group. The invention also relates to a polyisoprene, which is biosynthesized using the isoprene oligomer and isopentenyl diphosphate. Further, this invention provides a rubber composition comprising the isoprene oligomer and/or the polyisoprene, and a pneumatic tire, including tire components (e.g., treads and sidewalls) formed from the rubber composition.Type: GrantFiled: June 28, 2011Date of Patent: June 21, 2016Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., YAMAGATA UNIVERSITYInventors: Yukino Miyagi, Naoya Ichikawa, Norimasa Ohya
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Patent number: 9334427Abstract: The present invention provides a puncture sealant for tires capable of achieving improved injectability while having excellent initial sealing performance and seal retention performance. The puncture sealant includes rubber latex, a tackifier, an antifreezing agent, and a thixotropy-imparting agent.Type: GrantFiled: June 26, 2013Date of Patent: May 10, 2016Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Naoya Ichikawa
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Publication number: 20150344743Abstract: The present invention provides a puncture sealant for tires capable of achieving improved injectability while having excellent initial sealing performance and seal retention performance. The puncture sealant includes rubber latex, a tackifier, an antifreezing agent, and a thixotropy-imparting agent.Type: ApplicationFiled: June 26, 2013Publication date: December 3, 2015Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Naoya ICHIKAWA
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Publication number: 20150337155Abstract: Provided is a tire puncture sealant having improved puncture sealing performance while showing excellent storage stability. The present invention relates to a tire puncture sealant including: rubber latex, a tackifying resin emulsion, and a rosin acid surfactant.Type: ApplicationFiled: June 26, 2013Publication date: November 26, 2015Inventor: Naoya ICHIKAWA
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Patent number: 9181355Abstract: The present invention provides a modified natural rubber having a reduced tan ?, a method for producing the modified natural rubber, a rubber composition produced using the modified natural rubber, and a pneumatic tire produced using the rubber composition. The present invention also provides a modified natural rubber having a reduced tan ?, a method for producing the modified natural rubber, a rubber composition produced using the modified natural rubber and achieving good fuel economy and abrasion resistance at the same time, and a pneumatic tire produced using the rubber composition. The present invention relates to a modified natural rubber having a phosphorus content of 200 ppm or less and a total content of sodium and potassium of 350 ppm or less. The invention also relates to a modified natural rubber having a phosphorus content of 200 ppm or less and a nitrogen content of 0.2% by mass or less.Type: GrantFiled: June 9, 2011Date of Patent: November 10, 2015Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Naoya Ichikawa, Toshiaki Sakaki, Lucksanaporn Tarachiwin, Kamalin Kanyawararak
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Publication number: 20150175862Abstract: The present invention provides a tire puncture sealant which exhibits excellent storage stability while having reduced low-temperature viscosity and therefore improved low-temperature injection properties, and also exhibits excellent initial sealing properties and sealing force retention properties. The present invention relates to a tire puncture sealant containing rubber latex and 1,3-propanediol, the 1,3-propanediol being present in a proportion of 55 to 61% by mass of the liquid component.Type: ApplicationFiled: August 20, 2013Publication date: June 25, 2015Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Naoya Ichikawa
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Publication number: 20150175781Abstract: The present invention provides rubber compositions for tires which are capable of improving handling stability, fuel efficiency, and processability while sufficiently reducing the dependence on petroleum resources, and pneumatic tires including tire components (e.g. bead apex) formed from the rubber compositions for tires. The present invention relates to rubber compositions for tires, containing a rubber component and a naturally derived phenolic resin.Type: ApplicationFiled: August 2, 2012Publication date: June 25, 2015Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yukio Isobe, Takao Wada, Takayuki Hattori, Naoya Ichikawa
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Publication number: 20140378593Abstract: The present invention provides a rubber composition for an undertread, which has improved in processability, fuel economy, and tensile properties in a balanced manner, and also provides a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for an undertread, including: a rubber component containing a modified natural rubber having a phosphorus content of 200 ppm or less; and carbon black and/or a white filler, wherein the modified natural rubber is contained in an amount of 5% by mass or more per 100% by mass of the rubber component.Type: ApplicationFiled: September 11, 2014Publication date: December 25, 2014Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yoshihiro KAGAWA, Naoya ICHIKAWA
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Patent number: 8875765Abstract: The present invention provides a rubber composition for a clinch apex which improves in fuel economy, flex crack growth resistance, and processability in a balanced manner, and also provides a pneumatic tire produced using the rubber composition. The present invention relates to a rubber composition for a clinch apex, including: a modified natural rubber having a phosphorus content of 200 ppm or less; and at least one of carbon black and a white filler.Type: GrantFiled: September 14, 2012Date of Patent: November 4, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Isamu Tsumori, Naoya Ichikawa
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Patent number: 8857482Abstract: The present invention provides a rubber composition for a tread which enables improvement in fuel economy, breaking performance, and abrasion resistance in a balanced manner; a method for producing the rubber composition; and a heavy-load tire. The present invention relates to a rubber composition for a tread of a heavy-load tire, including a modified natural rubber having a phosphorus content of 200 ppm or less, and carbon black.Type: GrantFiled: July 27, 2012Date of Patent: October 14, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Takafumi Taguchi, Naoya Ichikawa
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Patent number: 8813798Abstract: A rubber composition for a tire, and a pneumatic tire are provided in which the fuel economy, abrasion resistance, and deterioration resistance can be improved in a good balance. The present invention relates to a rubber composition for a tire, containing a rubber component that contains: a modified natural rubber having a phosphorus content of not more than 200 ppm; and butadiene rubber, wherein 60 to 95% by mass of the modified natural rubber and 5 to 40% by mass of the butadiene rubber are contained based on 100% by mass of the rubber component.Type: GrantFiled: March 13, 2014Date of Patent: August 26, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Isamu Tsumori, Naoya Ichikawa
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Patent number: 8809450Abstract: The present invention provides a modified natural rubber which simultaneously achieves good fuel economy and good heat-aging resistance, and the production method thereof. The present invention also provides a tire rubber composition and a pneumatic tire which are produced using the modified natural rubber. The present invention relates to a modified natural rubber which is obtainable by treating a rubber coagulated from a saponified natural rubber latex, with a basic compound and then with an acidic compound.Type: GrantFiled: January 13, 2012Date of Patent: August 19, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Toshiaki Sakaki, Naoya Ichikawa, Masako Iwamoto
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Publication number: 20140194578Abstract: A rubber composition for a tire, and a pneumatic tire are provided in which the fuel economy, abrasion resistance, and deterioration resistance can be improved in a good balance. The present invention relates to a rubber composition for a tire, containing a rubber component that contains: a modified natural rubber having a phosphorus content of not more than 200 ppm; and butadiene rubber, wherein 60 to 95% by mass of the modified natural rubber and 5 to 40% by mass of the butadiene rubber are contained based on 100% by mass of the rubber component.Type: ApplicationFiled: March 13, 2014Publication date: July 10, 2014Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Isamu TSUMORI, Naoya ICHIKAWA