Patents by Inventor Norihiko Kaga
Norihiko Kaga 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: 11585044Abstract: A cord for reinforcing elastomers excellent in adhesion to elastomers such as rubber is provided. The cord is a cord for reinforcing elastomers (10) that includes metallic filaments (1) and a resin filament (2) twisted together, the resin filament (2) being made from a polymeric material having a melting point or softening point of 80 to 160° C.Type: GrantFiled: October 25, 2019Date of Patent: February 21, 2023Assignee: BRIDGESTONE CORPORATIONInventors: Takahisa Shizuku, Nobuhiro Ando, Norihiko Kaga
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Publication number: 20200231014Abstract: To provide a suspension arm having good rigidity and reduced weight, which includes a member A composed of a resin composition containing short fibers having a fiber length of less than 10 mm (short-fiber resin composition), and a member B composed of a resin composition containing continuous fibers having a fiber length of 10 mm or more (continuous-fiber resin composition).Type: ApplicationFiled: April 2, 2020Publication date: July 23, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Kanji Tanaka, Norihiko Kaga, Yoichi Nishimuro, Gaku Yakushiji
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Publication number: 20200108535Abstract: A resin member including an annular portion that defines a through hole with a circular cross section, and made of a resin containing reinforcing fibers, where the resin member has at least one gate trace; a weld portion is formed in the annular portion; and in a case where a polished surface along a perpendicular-to-axial direction perpendicular to a central axis of the through hole is formed in the annular portion, a sum of valley widths at half-value Txxh in a fiber orientation tensor waveform is 1.20 mm or more.Type: ApplicationFiled: May 14, 2018Publication date: April 9, 2020Applicant: Bridgestone CorporationInventors: Kanji TANAKA, Norihiko KAGA, Yoichi NISHIMURO
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Publication number: 20200055340Abstract: A cord for reinforcing elastomers excellent in adhesion to elastomers such as rubber is provided. The cord is a cord for reinforcing elastomers (10) that includes metallic filaments (1) and a resin filament (2) twisted together, the resin filament (2) being made from a polymeric material having a melting point or softening point of 80 to 160° C.Type: ApplicationFiled: October 25, 2019Publication date: February 20, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Takahisa Shizuku, Nobuhiro Ando, Norihiko Kaga
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Patent number: 9673345Abstract: The present invention provides a composition for a solar cell sealing film prepared by mixing an ethylene-?-olefin copolymer a metallocene catalyst (m-LLDPE) and another polymer as resin components, wherein the composition has the same processability as a composition containing m-LLDPE alone as a resin component and provides a solar cell sealing film having the same transparency as the composition containing m-LLDPE alone as resin component. A composition for a solar cell sealing film comprising m-LLDPE and low-density polyethylene (LDPE), wherein the weight average molecular weight of m-LLDPE (Mw(m-LLDPE)) is 200,000 or less, the weight average molecular weight of LDPE (Mw(LDPE)) is 250,000 or less, and the mass ratio of m-LLDPE to LDPE (m-LLDPE:LDPE) is in a range of 80:20 to 30:70, and a solar cell sealing film prepared using the same.Type: GrantFiled: May 23, 2014Date of Patent: June 6, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Yasunori Tarutani, Norihiko Kaga, Hisataka Kataoka, Takato Inamiya, Akira Yoshitake
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Publication number: 20160087130Abstract: The present invention provides a composition for a solar cell sealing film prepared by mixing an ethylene-?-olefin copolymer (m-LLDPE) polymerized using a metallocene catalyst and other polymers as resin components, wherein the composition has the same processability as a composition containing m-LLDPE alone and provides a solar cell sealing film having the same transparency as the case where m-LLDPE is used alone. A composition for a solar cell sealing film comprising m-LLDPE and low-density polyethylene (LDPE), wherein the weight average molecular weight of m-LLDPE (Mw(m-LLDPE)) is 200,000 or less, the weight average molecular weight of LDPE (Mw(LDPE)) is 250,000 or less, and the mass ratio of m-LLDPE to LDPE (m-LLDPE:LDPE) is in a range of 80:20 to 30:70, and a solar cell sealing film prepared using the same.Type: ApplicationFiled: May 23, 2014Publication date: March 24, 2016Applicant: BRIDGESTONE CORPORATIONInventors: Yasunori TARUTANI, Norihiko KAGA, Hisataka KATAOKA, Takato INAMIYA, Akira YOSHITAKE
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Patent number: 9293616Abstract: The present invention provides a solar cell sealing film whereby generation of gas is decreased. The solar cell sealing film comprises a resin mixture of an ethylene-vinyl acetate copolymer and a polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7, the content of the organic peroxide is 0.1 to 1.0 parts by mass based on 100 parts by mass of the resin mixture, and the gel rate after crosslinking is 20 to 80% by mass.Type: GrantFiled: January 25, 2013Date of Patent: March 22, 2016Assignee: BRIDGESTONE CORPORATIONInventors: Takato Inamiya, Hisataka Kataoka, Norihiko Kaga, Yasunori Tarutani
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Patent number: 9287429Abstract: The present invention provides a solar cell sealing film in which the shrinkage is prevented when heated. The solar cell sealing film 13A, 13B comprises a resin mixture of an ethylene-vinyl acetate copolymer and polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7 and the melting point of the resin mixture (temperature at a viscosity of 30,000 Pa·s) is 80 to 105° C.Type: GrantFiled: January 25, 2013Date of Patent: March 15, 2016Assignee: BRIDGESTONE CORPORATIONInventors: Takato Inamiya, Hisataka Kataoka, Norihiko Kaga, Yasunori Tarutani
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Publication number: 20160005901Abstract: Method for manufacturing a solar cell module in which a light-receiving side sealing film 13A and a backside sealing film 13B are each formed of a different resin composition from each other selected from a resin composition A and a resin composition B, both of the sealing films are heated when the pressurizing is initiated so as to reach to a minimum temperature X° C. and a maximum temperature Y° C., the resin composition A has a viscosity of 5.0×104 Pa·s or less at the temperature X° C., and the resin composition B has a viscosity of 7.0×104 Pa·s or less at the temperature X° C. and has a viscosity of 2.0×104 Pa·s or more at the temperature Y° C.Type: ApplicationFiled: February 27, 2014Publication date: January 7, 2016Applicant: BRIDGESTONE CORPORATIONInventors: Takato INAMIYA, Hisataka KATAOKA, Satoshi ARAAKE, Norihiko KAGA, Yasunori TARUTANI
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Publication number: 20150303339Abstract: To provide a sealing film for a solar cell, which can be effectively formed and is capable of preventing wraparound even if heating is performed in a wide temperature range when members of the solar cell module are integrated. A pair of sealing films 13A and 13B for a solar cell including a light-receiving side sealing film 13A formed from a resin composition A; and a colored backside sealing film 13B formed from a resin composition B, wherein a temperature at which the resin composition B has a viscosity of 50,000 Pa·s is 95° C. or lower, and the resin composition B has a viscosity higher than that of the resin composition A at 80° C. and 100° C.Type: ApplicationFiled: August 8, 2013Publication date: October 22, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Takato INAMIYA, Hisataka KATAOKA, Satoshi ARAAKE, Norihiko KAGA, Yasunori TARUTANI
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Publication number: 20150267012Abstract: There is provided a cured sheet and a laminate having the same, wherein the cured sheet is prepared by curing a laminate forming sheet containing an ethylene-vinyl acetate copolymer and a polyethylene, excellent in adhesion durability and has a sufficient flexibility even in the case of a high content of the polyethylene. A cured sheet constituting a laminate and a laminate having the same, wherein the cured sheet is prepared by curing through cross-linking a laminate forming sheet comprising a composition containing an ethylene-vinyl acetate copolymer, a polyethylene and an organic peroxide; a weight ratio of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) (EVA:PE) is in a range of 3:7 to 8:2; and the cured sheet has a sea-island structure wherein the ethylene-vinyl acetate copolymer constitutes a sea phase and the polyethylene constitutes an island phase.Type: ApplicationFiled: October 15, 2013Publication date: September 24, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Yasunori Tarutani, Norihiko Kaga, Hisataka Kataoka, Takato Inamiya, Satoshi Araake
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Publication number: 20150038646Abstract: To provide a composition for producing a sheet for forming a laminate, which contains an ethylene-vinyl acetate copolymer and a polyethylene resin, by which the above-described problems in the width of the temperature range in which a processable viscosity range is obtained and the like are improved and which excels in processing properties such as a film-forming property when producing a sheet, and a sheet for forming a laminate using this. A composition for producing a sheet for forming a laminate, which contains an ethylene-vinyl acetate copolymer and polyethylene, wherein the composition has a sea-island structure in which the ethylene-vinyl acetate copolymer is a sea phase and the polyethylene is an island phase, and a sheet for forming a laminate using this.Type: ApplicationFiled: January 24, 2013Publication date: February 5, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Yasunori Tarutani, Norihiko Kaga, Hisataka Kataoka, Takato Inamiya, Satoshi Araake
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Publication number: 20150007888Abstract: The present invention provides a solar cell sealing film in which the shrinkage is prevented when heated. The solar cell sealing film 13A, 13B comprises a resin mixture of an ethylene-vinyl acetate copolymer and polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7 and the melting point of the resin mixture (temperature at a viscosity of 30,000 Pa·s) is 80 to 105° C.Type: ApplicationFiled: January 25, 2013Publication date: January 8, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Takato Inamiya, Hisataka Kataoka, Norihiko Kaga, Yasunori Tarutani
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Publication number: 20140366945Abstract: The present invention provides a solar cell sealing film whereby generation of gas is decreased. The solar cell sealing film comprises a resin mixture of an ethylene-vinyl acetate copolymer and a polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7, the content of the organic peroxide is 0.1 to 1.0 parts by mass based on 100 parts by mass of the resin mixture, and the gel rate after crosslinking is 20 to 80% by mass.Type: ApplicationFiled: January 25, 2013Publication date: December 18, 2014Applicant: BRIDGESTONE CORPORATIONInventors: Takato Inamiya, Hisataka Kataoka, Norihiko Kaga, Yasunori Tarutani
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Patent number: 8144386Abstract: There are provided particles for display media capable of properly controlling change in an amount of charge by heating and an information display panel, by using the particles for display media capable of eliminating a display failure and reduction in contrast ratio.Type: GrantFiled: September 20, 2004Date of Patent: March 27, 2012Assignee: Bridgestone CorporationInventors: Norihiko Kaga, Kazuya Murata, Gaku Yakushiji
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Publication number: 20120049138Abstract: Particles for display media having charging properties used for information display panel, is characterized in that, in the particles for display media in which an external additive is applied on a surface of a mother particle made of resin, the external additive made of an external additive of an weak hydrophobic property and an external additive made of a metal oxide is used. Herewith, the particles for display media which can drive under a low voltage driving, and thus reduce a cost of the information display panel using such particles for display media are provided.Type: ApplicationFiled: April 30, 2010Publication date: March 1, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Hiroyuki Anzai, Norihiko Kaga, Gaku Yakushiji
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Patent number: 8120837Abstract: A display media particle used for an information display panel having display media constituted of particles sealed between two substrates, at least one of which is transparent, for displaying information by moving the display media, is formed of a mother particle 32 made from materials including a base resin having child particles 33 added to a surface thereof. The base resin is a thermoplastic resin having a viscosity of no more than 1000 Pa·s at 260° C. and a shear rate at 122 s?1, and a heatproof temperature at no less than 430° C. Since optimal conditions of the viscosity and the heatproof temperature are specified, it is possible to round the resin effectively by a heat treatment for spheronization as a post-treatment after manufacturing.Type: GrantFiled: August 5, 2009Date of Patent: February 21, 2012Assignee: Bridgestone CorporationInventors: Toshiyuki Oosaki, Hideo Ishigouoka, Norihiko Kaga, Kentaro Hanzawa
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Publication number: 20110228377Abstract: The present invention provides an information display panel capable of maintaining an excellent image property even after repeated rewrite, and particles for display media used therefor. The information display panel, in which at least one kind of display media including a charged particle for display media are sealed in a space between substrates at least one of which is transparent, for displaying an image by application of electrostatic force to the display media by means of an electronic field forming means, uses the particle for display media comprised of a mother particle, child particles and fine particles. The child particles, having a molecular structure of three-dimensional crosslinked structure and a particle diameter smaller than that of the mother particle which has no molecular structure of three-dimensional crosslinked structure, are embedded in a surface of the mother particle. It thereby hardens the surface of the mother particle.Type: ApplicationFiled: August 6, 2008Publication date: September 22, 2011Applicant: BRIDGESTONE CORPORATIONInventors: Norihiko Kaga, Takahisa Shizuku
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Patent number: 7995266Abstract: Particles for display media are constructed as spherical resin fine particles, in which functional groups indicating positively-charging properties are existent on their surfaces, which are obtained by polymerizing monomer by utilizing initiator having functional groups indicating positively-charging properties produced by reacting organic alkyl sulfonates and both terminal ends of azo initiator having cationic functional group including nitrogen-containing heterocycle or nitrogen-containing fatty series, or, are constructed as spherical resin fine particles, in which functional group indicating charging properties or ionic properties are existent on their surfaces, which are obtained by polymerizing monomer by utilizing initiator having functional groups indicating charging properties or ionic properties at its both terminal ends.Type: GrantFiled: February 8, 2008Date of Patent: August 9, 2011Assignee: Bridgestone CorporationInventors: Masahiro Homma, Norihiko Kaga, Kazuya Murata
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Publication number: 20100284058Abstract: The present invention provides an information display panel capable of achieving good display performance (high contrast and low voltage driving), especially high contrast for a long term from the initial stage by using particles for display media whose charge amount is controllable In an information display panel, in which at least one kind of display media are sealed in a space between two substrates at least one of which is transparent, for displaying an image by electrically moving the display media, a particle for display media combined in a form of a mother particle embedded with first child particles and second child particles, wherein the first child particles and the second child particles have a smaller particle diameter and higher hardness than those of the mother particle and the first child particles and the second child particles have different charging characteristics with each other is used as the display media.Type: ApplicationFiled: September 17, 2008Publication date: November 11, 2010Applicant: BRIDGESTONE CORPORATIONInventors: Norihiko Kaga, Toshiaki Arai, Akira Okuno