Patents by Inventor Masakazu Nishiyama
Masakazu Nishiyama 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: 9718905Abstract: To provide a water-soluble polythiophene used as an electrically conductive material, and its production method. A polythiophene comprising at least one type of structural units selected from the group consisting of structural units represented by the formula (1), structural units represented by the formula (2), structural units represented by the formula (3), structural units represented by the formula (4), structural units represented by the formula (5) and structural units represented by the formula (6). The polythiophene is obtained by polymerizing at least one thiophene compound selected from the group consisting of a thiophene compound represented by the formula (15), a thiophene compound represented by the formula (16) and a thiophene compound represented by the formula (17) in water or an alcohol solvent in the presence of an oxidizing agent.Type: GrantFiled: July 3, 2013Date of Patent: August 1, 2017Assignee: TOSOH CORPORATIONInventors: Hirokazu Yano, Masakazu Nishiyama, Hiroshi Awano
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Publication number: 20150337061Abstract: To provide a water-soluble polythiophene used as an electrically conductive material, and its production method. A polythiophene comprising at least one type of structural units selected from the group consisting of structural units represented by the formula (1), structural units represented by the formula (2), structural units represented by the formula (3), structural units represented by the formula (4), structural units represented by the formula (5) and structural units represented by the formula (6). The polythiophene is obtained by polymerizing at least one thiophene compound selected from the group consisting of a thiophene compound represented by the formula (15), a thiophene compound represented by the formula (16) and a thiophene compound represented by the formula (17) in water or an alcohol solvent in the presence of an oxidizing agent.Type: ApplicationFiled: July 3, 2013Publication date: November 26, 2015Applicant: TOSOH CORPORATIONInventors: Hirokazu YANO, Masakazu NISHIYAMA, Hiroshi AWANO
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Patent number: 8993805Abstract: A novel material having high hole-transporting ability and a high glass transition temperature and having long-lasting durability is obtained. A benzofluorene compound represented by formula (1) is used. (In the formula, M is a substituted or unsubstituted aryl group having 6-40 carbon atoms or a substituted or unsubstituted heteroaryl group having 5-40 carbon atoms; Ar1 to Ar4 each independently is a substituted or unsubstituted aryl group having 6-40 carbon atoms or a substituted or unsubstituted heteroaryl group having 5-40 carbon atoms, provided that at least one of Ar1 to Ar4 is a substituent represented by any of the following formulae (2) to (5); and p is an integer of 0-2.Type: GrantFiled: April 12, 2007Date of Patent: March 31, 2015Assignee: Tosoh CorporationInventors: Masakazu Nishiyama, Naoki Matsumoto, Takanori Miyazaki, Takeshi Kanbara
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Patent number: 8865336Abstract: Provided is a separator for alkaline batteries which can not only prevent batteries from internal short circuit by inhibiting the dendrite formation at anode, but also enables to have a low electrical resistance. The separator for alkaline batteries comprises a composite sheet in which a base layer comprising a wet-type nonwoven material formed from alkaline resistant fibers is covered with a nanofiber layer comprising a modified polyvinyl alcohol fiber which has a fiber diameter of 10 to 1000 nm and a liquid absorption amount by fibers of 4.0 to 40.0 g/g after immersion in a 35% aqueous solution of KOH.Type: GrantFiled: December 7, 2007Date of Patent: October 21, 2014Assignee: Kuraray Co., Ltd.Inventors: Tomohiro Hayakawa, Shinya Inada, Hideo Hayashi, Hiroyuki Kawai, Masakazu Nishiyama
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Patent number: 8647741Abstract: The present invention aims to provide a polypropylene fiber (PP fiber) excellent in strength, heat resistance, and water-absorption properties, a method of producing the same, and a hydraulic composition, a rope, a sheet-shaped fiber structure, and a composite material with an organic polymer each using the PP fiber. The present invention provides: a PP fiber having a fiber having a fiber strength of 7 cN/dtex or more and having either or both of (i) DSC properties such that the endothermic peak shape by DSC is a single shape having a half width of 10° C. or lower and the melt enthalpy change (AH) is 125 J/ g and (ii) irregular properties such that the single fiber fineness is 0.i to 3 dtex and irregularities are formed on the surface.Type: GrantFiled: March 24, 2008Date of Patent: February 11, 2014Assignee: Kuraray Co., Ltd.Inventors: Takashi Katayama, Yoshihiro Iwasaki, Masakazu Nishiyama
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Patent number: 8211573Abstract: The present invention provides a conductive sheet having a surface resistance of 10 ?/sq or lower on both surfaces, the conductive sheet comprising a sheet (A) and a sheet (B) laminated to the sheet (A), the sheet (A) having an apparent specific gravity of 0.05 g/cm3 to 0.50 g/cm3 and being formed from fibers having a diameter within the range between 3 and 20 ?m, and the sheet (B) being formed from fibers having a diameter of 3 ?m or smaller. The sheet (A) may be a fibrous material comprises an organic polymer fiber as its main component.Type: GrantFiled: September 6, 2011Date of Patent: July 3, 2012Assignee: Kuraray Co., Ltd.Inventors: Masakazu Nishiyama, Eiichi Ishida, Yoshiaki Yasuda
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Patent number: 8097366Abstract: An alkaline battery separator including 25 to 62% by mass of an alkali-resistance synthetic fiber, 5 to 25% by mass of a fibrillated organic solvent-spun cellulose fiber having a Canadian standard freeness value of 10 to 280 ml, and 33 to 50% by mass of a mercerized pulp having a Canadian standard freeness value of not less than 550 ml, wherein the fibrillated organic solvent-spun cellulose fiber intertwines with the mercerized pulp.Type: GrantFiled: February 23, 2006Date of Patent: January 17, 2012Assignee: Kuraray Co., Ltd.Inventors: Toshimitsu Harada, Hisashi Nagi, Hiroyuki Kawai, Masakazu Nishiyama
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Publication number: 20110318642Abstract: The present invention provides a conductive sheet having a surface resistance of 10 ?/sq or lower on both surfaces, the conductive sheet comprising a sheet (A) and a sheet (B) laminated to the sheet (A), the sheet (A) having an apparent specific gravity of 0.05 g/cm3 to 0.50 g/cm3 and being formed from fibers having a diameter within the range between 3 and 20 ?m, and the sheet (B) being formed from fibers having a diameter of 3 ?m or smaller. The sheet (A) may be a fibrous material comprises an organic polymer fiber as its main component.Type: ApplicationFiled: September 6, 2011Publication date: December 29, 2011Applicant: KURARAY CO., LTD.Inventors: Masakazu NISHIYAMA, Eiichi ISHIDA, Yoshiaki YASUDA
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Publication number: 20100310921Abstract: Provided is a separator for alkaline batteries which can not only prevent batteries from internal short circuit by inhibiting the dendrite formation at anode, but also enables to have a low electrical resistance. The separator for alkaline batteries comprises a composite sheet in which a base layer comprising a wet-type nonwoven material formed from alkaline resistant fibers is covered with a nanofiber layer comprising a modified polyvinyl alcohol fiber which has a fiber diameter of 10 to 1000 nm and a liquid absorption amount by fibers of 4.0 to 40.0 g/g after immersion in a 35% aqueous solution of KOH.Type: ApplicationFiled: December 7, 2007Publication date: December 9, 2010Applicant: Kuraray Co., Ltd.Inventors: Tomohiro Hayakawa, Shinya Inada, Hideo Hayashi, Hiroyuki Kawai, Masakazu Nishiyama
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Patent number: 7803953Abstract: To provide a process for preparing an arylamine highly selectively and highly efficiently, which is also industrially superior without a fear of a side reaction when a strong base is employed. An aryl compound having an active group is reacted with an amine compound in the presence of a base by means of a catalyst for producing an arylamine which comprises a palladium compound having a tertiary phosphine group and a phase-transfer catalyst.Type: GrantFiled: June 1, 2007Date of Patent: September 28, 2010Assignee: Tosoh CorporationInventors: Takanori Miyazaki, Masakazu Nishiyama, Naoki Matsumoto
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Publication number: 20100173547Abstract: The present invention aims to provide a polypropylene fiber (PP fiber) excellent in strength, heat resistance, and water-absorption properties, a method of producing the same, and a hydraulic composition, a rope, a sheet-shaped fiber structure, and a composite material with an organic polymer each using the PP fiber. The present invention provides: a PP fiber having a fiber strength of 7 cN/dtex or more and having either or both of (i) DSC properties such that the endothermic peak shape by DSC is a single shape having a half width of 10° C. or lower and the melt enthalpy change (AH) is 125 J/g and (ii) irregular properties such that the single fiber fineness is 0.1 to 3 dtex and irregularities are formed on the surface, the irregularities having an average interval of 6.5 to 20 ?m and an average height of 0.Type: ApplicationFiled: March 24, 2008Publication date: July 8, 2010Applicant: KURARAY CO., LTD.Inventors: Takashi Katayama, Yoshihiro Iwasaki, Masakazu Nishiyama
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Publication number: 20100167047Abstract: The present invention is a waterproof sheet for a tunnel containing a base sheet containing a synthetic resin having on a surface thereof a silica-containing surface layer containing silica having a silicon dioxide content of 90% by mass or more in a ratio of from 30 to 200 mg/cm3, formed over a depth of from 5 to 30 ?m from the surface of the waterproof sheet, and having a tensile breaking strength of 10 MPa or more and a mortar adhesion strength of 15 N/cm or more, and thus provides a waterproof sheet for a tunnel that forms no gap between the sheet and the concrete structure even when a prolonged period of time is elapsed from the installation, or the installed surface suffers large deterioration in evenness or levelness, ground subsidence or earthquake, and also does not cause problems including breakage and the like upon installation and after installation in the tunnel, thereby preventing smoothly water seeping from the earth or the ground from leaking into the tunnel.Type: ApplicationFiled: June 4, 2007Publication date: July 1, 2010Applicants: KURARAY CO., LTD, RAILWAY TECHNICAL RESEARCH INSTITUTEInventors: Tomokazu Ise, Kazumasa Kusudo, Masakazu Nishiyama, Hidekazu Taniguchi, Naoyuki Yaguchi, Masaru Tateyama, Shogo Mamada
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Patent number: 7608680Abstract: It is an object of the present invention to provide a novel triarylamine polymer which is excellent in solubility and film-forming property and has improved thermal stability; a simple process for its production; and an electronic element employing it.Type: GrantFiled: June 29, 2006Date of Patent: October 27, 2009Assignee: Tosoh CorporationInventors: Takao Suzuki, Masakazu Nishiyama, Hisao Eguchi
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Publication number: 20090184312Abstract: A novel material having high hole-transporting ability and a high glass transition temperature and having long-lasting durability is obtained. A benzofluorene compound represented by formula (1) is used. (In the formula, M is a substituted or unsubstituted aryl group having 6-40 carbon atoms or a substituted or unsubstituted heteroaryl group having 5-40 carbon atoms; Ar1 to Ar4 each independently is a substituted or unsubstituted aryl group having 6-40 carbon atoms or a substituted or unsubstituted heteroaryl group having 5-40 carbon atoms, provided that at least one of Ar1 to Ar4 is a substituent represented by any of the following formulae (2) to (5); and p is an integer of 0-2.Type: ApplicationFiled: April 12, 2007Publication date: July 23, 2009Applicant: TOSOH CORPORATIONInventors: Masakazu Nishiyama, Naoki Matsumoto, Takanori Miyazaki, Takeshi Kanbara
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Patent number: 7482490Abstract: Novel amine compounds that can be utilized as hole transport materials, hole injection materials or the like of organic electroluminescence devices, electrophotographic receptors or the like, and their production processes are provided. The novel amine compound is represented by the following general formula (1). In the formula, R1 and R2 each independently represents hydrogen atom, a linear, branched or cyclic alkyl group or alkoxy group, an aryl group, an aryloxy group or a halogen atom; Ar1 and Ar2 each independently represents a substituted or unsubstituted aryl group or heteroaryl group, and may form a nitrogen-containing heterocyclic ring together with the nitrogen atom bonded thereto; and Ar3 each independently represents a substituted or unsubstituted phenyl group, naphthyl group, biphenylyl group, terphenylyl group, anthryl group, fluorenyl group or pyridyl group (except for amino-substituted groups); and M represents a single bond, an arylene group or a heteroarylene group.Type: GrantFiled: January 14, 2005Date of Patent: January 27, 2009Assignee: Tosoh CorporationInventors: Masakazu Nishiyama, Naoki Matsumoto, Hisao Eguchi
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Publication number: 20090017385Abstract: An alkaline battery separator comprising an alkali-resistance synthetic fiber, a fibrillated organic solvent-spun cellulose fiber having a Canadian standard freeness value of 10 to 280 ml, and a mercerized pulp having a Canadian standard freeness value of not less than 550 ml is prepared. In the separator, the proportion of the alkali-resistance synthetic fiber, the proportion of the fibrillated organic solvent-spun cellulose fiber, and the proportion of the mercerized pulp relative to the total amount of the separator are respectively 25 to 62% by mass, 5 to 25% by mass, and 33 to 50% by mass, provided that the total amount of the separator is 100% by mass. The alkali-resistance synthetic fiber may comprise a polyvinyl alcohol-series fiber having an average fiber fineness of not more than 1 dtex. The alkaline battery separator may further comprise a polyvinyl alcohol-series binder in a proportion of 3 to 20% by mass relative to the total amount of the separator.Type: ApplicationFiled: February 23, 2006Publication date: January 15, 2009Applicant: Kuraray Co., Ltd.Inventors: Toshimitsu Harada, Hisashi Nagi, Hiroyuki Kawai, Masakazu Nishiyama
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Publication number: 20080194878Abstract: Novel amine compounds that can be utilized as hole transport materials, hole injection materials or the like of organic electroluminescence devices, electrophotographic receptors or the like, and their production processes are provided. The novel amine compound is represented by the following general formula (1). In the formula, R1 and R2 each independently represents hydrogen atom, a linear, branched or cyclic alkyl group or alkoxy group, an aryl group, an aryloxy group or a halogen atom; Ar1 and Ar2 each independently represents a substituted or unsubstituted aryl group or heteroaryl group, and may form a nitrogen-containing heterocyclic ring together with the nitrogen atom bonded thereto; and Ar3 each independently represents a substituted or unsubstituted phenyl group, naphthyl group, biphenylyl group, terphenylyl group, anthryl group, fluorenyl group or pyridyl group (except for amino-substituted groups); and M represents a single bond, an arylene group or a heteroarylene group.Type: ApplicationFiled: January 14, 2005Publication date: August 14, 2008Applicant: TOSOH CORPORATIONInventors: Masakazu Nishiyama, Naoki Matsumoto, Hisao Eguchi
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Publication number: 20070282111Abstract: To provide a process for preparing an arylamine highly selectively and highly efficiently, which is also industrially superior without a fear of a side reaction when a strong base is employed. An aryl compound having an active group is reacted with an amine compound in the presence of a base by means of a catalyst for producing an arylamine which comprises a palladium compound having a tertiary phosphine group and a phase-transfer catalyst.Type: ApplicationFiled: June 1, 2007Publication date: December 6, 2007Applicant: TOSOH CORPORATIONInventors: Takanori Miyazaki, Masakazu Nishiyama, Naoki Matsumoto
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Patent number: 7189877Abstract: Arylamine derivatives that can be utilized as hole transport or hole injection materials of organic electroluminescence devices, electrophotographic reactors, etc., and synthetic intermediates thereof, and processes of producing those. The arylamine derivative is represented by the general formula (1): wherein R1 to R4 each independently represents a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, a halogen atom, an amino group, etc.; Ar1 and Ar2 each independently represents a substituted or unsubstituted aryl group or hetero-aromatic group, and Ar1 and Ar2 may form a nitrogen-containing heterocyclic ring together with the nitrogen atom to which Ar1 and Ar2 bond; and Ar3 represents a substituted or unsubstituted arylene group.Type: GrantFiled: September 17, 2003Date of Patent: March 13, 2007Assignee: Tosch CorporationInventors: Masakazu Nishiyama, Hiroaki Tenma, Hisao Eguchi
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Publication number: 20060241278Abstract: It is an object of the present invention to provide a novel triarylamine polymer which is excellent in solubility and film-forming property and has improved thermal stability; a simple process for its production; and an electronic element employing it.Type: ApplicationFiled: June 29, 2006Publication date: October 26, 2006Applicant: TOSOH CORPORATIONInventors: Takao Suzuki, Masakazu Nishiyama, Hisao Eguchi