Patents by Inventor Hideshi Yanagi
Hideshi Yanagi 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: 9834658Abstract: The present invention provides: a rubber composition obtained by mixing 30 to 80 parts by mass of carbon black, whose DBP absorption value and CTAB adsorption specific surface area satisfy the following relational formulas (I) and (II), into 100 parts by mass of a rubber component, wherein macrodispersion D(%) of the carbon black in the rubber composition is 1% or more and less than 10%, and the rubber composition has high performance and excellent processability such as roll workability and the like; and a rubber product such as a tire having reduced rolling resistance and excellent fatigue resistance and abrasion resistance. DBP absorption value(cm3/100 g)<3.0×(CTAB adsorption specific surface area(m2/g))?270??(I) DBP absorption value(cm3/100 g)<115??(II) CTAB adsorption specific surface area(m2/g)<230??(III).Type: GrantFiled: April 30, 2015Date of Patent: December 5, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Hideshi Yanagi
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Publication number: 20170044347Abstract: The present invention provides: a rubber composition obtained by mixing 30 to 80 parts by mass of carbon black, whose DBP absorption value and CTAB adsorption specific surface area satisfy the following relational formulas (I) and (II), into 100 parts by mass of a rubber component, wherein macrodispersion D (%) of the carbon black in the rubber composition is 1% or more and less than 10%, and the rubber composition has high performance and excellent processability such as roll workability and the like; and a rubber product such as a tire having reduced rolling resistance and excellent fatigue resistance and abrasion resistance. DBP absorption value(cm3/100 g)<3.0×(CTAB adsorption specific surface area(m2/g))?270??(I) DBP absorption value(cm3/100 g)<115??(II) CTAB adsorption specific surface area(m2/g)<230??(III).Type: ApplicationFiled: April 30, 2015Publication date: February 16, 2017Applicant: BRIDGESTONE CORPORATIONInventor: Hideshi YANAGI
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Patent number: 8110618Abstract: A sealing agent stock solution 20 is prepared by preparing a mixed solution 14 by mixing a rubber latex, a resin emulsion and a surfactant, and a predetermined amount of water in a solution preparation vessel 12, followed by adding an anti-freeze agent 18 to the mixed solution 14. The sealing agent stock solution 20 is held (left standing still) at least over for 24 hr or more and preferably over for 48 hr or more without stirring in the solution preparation vessel 12, followed by filtering the sealing agent stock solution 20 with a filter member 26 made of a mesh filter having the mesh number from 50 to 400 mesh to remove latex aggregates 36 generated in the sealing agent stock solution 20, and thereby a sealing agent 10 that does not contain the latex aggregates 36 is produced.Type: GrantFiled: November 15, 2007Date of Patent: February 7, 2012Assignee: Bridgestone CorporationInventors: Hideshi Yanagi, Narukuni Hirata, Haruki Minoshima, Daisuke Sugio
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Patent number: 7891385Abstract: To reliably supply a predetermined amount of sealing agent into a pneumatic tire even if the device is inclined and after the predetermined amount of sealing agent is supplied, to automatically start feeding compressed air into the pneumatic tire. In pumping device 30, when compressed air is supplied to air chamber 54, internal pressure of air chamber 54 increases, and as the internal pressure of air chamber 54 rises, a contained volume of air chamber 54 increases while a contained volume of liquid container 52 decreases. Thus, sealing agent 100 in an amount corresponding to the amount corresponding to the reduction in the contained volume of liquid container 52, is forcibly discharged from discharge outlet 64 and the discharged sealing agent 100 is injected into tire 90.Type: GrantFiled: May 26, 2005Date of Patent: February 22, 2011Assignee: Bridgestone CorporationInventors: Hideshi Yanagi, Daisuke Sugio, Kazuma Nakazawa, Shinichi Iwasaki, Rieko Iwasaki, legal representative, Yuji Takeda, Masaki Yoshida
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Patent number: 7745524Abstract: A puncture sealing agent that is excellent in storage stability, and good in puncture sealing properties, and the like, is provided. A puncture sealing agent containing at least a synthetic rubber latex, wherein the gelation ratio as evaluated in a Maron-type mechanical stability test performed in accordance with JIS K 6387 is 0.001 to 10%.Type: GrantFiled: November 1, 2005Date of Patent: June 29, 2010Assignee: Bridgestone CorporationInventors: Hideshi Yanagi, Ichirou Yamaguchi, Daisuke Sugio
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Publication number: 20100032612Abstract: A sealing agent stock solution 20 is prepared by preparing a mixed solution 14 by mixing a rubber latex, a resin emulsion and a surfactant, and a predetermined amount of water in a solution preparation vessel 12, followed by adding an anti-freeze agent 18 to the mixed solution 14. The sealing agent stock solution 20 is held (left standing still) at least over for 24 hr or more and preferably over for 48 hr or more without stirring in the solution preparation vessel 12, followed by filtering the sealing agent stock solution 20 with a filter member 26 made of a mesh filter having the mesh number from 50 to 400 mesh to remove latex aggregates 36 generated in the sealing agent stock solution 20, and thereby a sealing agent 10 that does not contain the latex aggregates 36 is produced.Type: ApplicationFiled: November 15, 2007Publication date: February 11, 2010Applicant: BRIDGESTONE CORPORATIONInventors: Hideshi Yanagi, Narukuni Hirata, Haruki Minoshima, Daisuke Sugio
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Publication number: 20090056850Abstract: To reliably supply a predetermined amount of sealing agent into a pneumatic tire even if the device is inclined and after the predetermined amount of sealing agent is supplied, to automatically start feeding compressed air into the pneumatic tire. In pumping device 30, when compressed air is supplied to air chamber 54, internal pressure of air chamber 54 increases, and as the internal pressure of air chamber 54 rises, a contained volume of air chamber 54 increases while a contained volume of liquid container 52 decreases. Thus, sealing agent 100 in an amount corresponding to the amount corresponding to the reduction in the contained volume of liquid container 52, is forcibly discharged from discharge outlet 64 and the discharged sealing agent 100 is injected into tire 90.Type: ApplicationFiled: May 26, 2005Publication date: March 5, 2009Applicant: BRIDGESTONE CORPORATIONInventors: Hideshi Yanagi, Daisuke Sugio, Kazuma Nakazawa, Shinichi Iwasaki, Rieko Iwasaki, Yuji Takeda, Masaki Yoshida
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Publication number: 20080306197Abstract: [Problem] A puncture sealing agent that is excellent in storage stability, and good in puncture sealing properties, and the like, is provided. [Solution means] A puncture sealing agent containing at least a synthetic rubber latex, wherein the gelation ratio as evaluated in a Maron-type mechanical stability test performed in accordance with JIS K 6387 is 0.001 to 10%.Type: ApplicationFiled: November 1, 2005Publication date: December 11, 2008Applicant: BRIDGESTONE CORPORATIONInventors: Hideshi Yanagi, Ichirou Yamaguchi, Daisuke Sugio
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Publication number: 20060142420Abstract: The present invention is directed to provide a puncture-sealant that can maintain high sealing ability and is excellent in practicality. The invention is a puncture-sealant for sealing a hole in a punctured tire, the puncture-sealant including: (1) at least one type of rubber latex selected from the group consisting of SBR latex, NBR latex, carboxyl-modified SBR latex and carboxyl-modified NBR latex; (2) an antifreezing agent; and (3) at least one of a short fiber or a resin adhesive that is compatible with the rubber latex.Type: ApplicationFiled: November 25, 2003Publication date: June 29, 2006Applicant: BRIDGESTONE CORPORATIONInventors: Kazuma Nakazawa, Hideshi Yanagi, Ryuji Izumoto, Shinichi Iwasaki
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Publication number: 20040044104Abstract: A low-cost, low-noise pavement is realized by a waste-rubber-containing elastic pavement material which includes waste rubber resulting from waste spent-tires and the like, a binder and an aggregate while a pavement after application has a coefficient of restitution to a golf ball of 20 to 60. An urethane-based or epoxy-based curable resin is suitable for use as the binder. Preferably, the contents of the waste rubber and the binder are 30% to 70% by volume and 10% to 30% by volume respectively.Type: ApplicationFiled: June 17, 2003Publication date: March 4, 2004Inventors: Mitsuaki Maeda, Ryuji Izumoto, Hideshi Yanagi, Satoru Kawamata
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Patent number: 6379786Abstract: A ligneous finishing material including a base plate, a sheet formed from a sheet base impregnated with a thermosetting resin and attached to the base plate, and a decorative sheet impregnable with a resin and attached to the sheet. The base plate, sheet and decorative sheet are laminated on each other by a hot-press process. The thermosetting resin is preferably a phenol resin having a fluidity in a pre-pregnated state of 3% to 50%. The ligneous finishing material is inexpensive and highly resistant to surface damaging, and can be used as a surface facing material for floors, etc., and as a facing material for fittings and furnishings.Type: GrantFiled: July 15, 1999Date of Patent: April 30, 2002Assignee: Bridgestone CorporationInventors: Michitaka Takeshita, Sei Aoki, Hideshi Yanagi, Takeichi Yoshida, Masanori Abe