Patents by Inventor Hirokazu Kuwabara
Hirokazu Kuwabara 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: 8530662Abstract: The present invention provides pyridine derivatives useful as intermediates of drugs and agricultural chemicals, electrophotographic receptors, dyes and so on. More specifically, the invention relates to novel pyridyltetrahydropyridines and novel pyridylpiperidines, and further to a method of manufacturing pyridine derivatives through reaction between bipyridine derivatives and benzyl halide or benzyloxycarbonyl halide and subsequent reduction of the resultant reaction products with the aid of palladium catalysts, platinum catalysts, ruthenium catalysts or rhodium catalysts.Type: GrantFiled: October 9, 2009Date of Patent: September 10, 2013Assignee: Fujifilm Finechemicals Co., LtdInventors: Hirokazu Kuwabara, Takayuki Sonoda, Hiromitsu Saitoh, Hidehiro Arai
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Publication number: 20130009083Abstract: A solenoid includes a plunger, a core, an electromagnetic coil, and a casing. A core receiving portion of the plunger is to receive a core projection while the electromagnetic coil is energized. A plunger receiving portion of the core is to receive a plunger projection while the electromagnetic coil is energized. The casing houses the plunger, the core, and the electromagnetic coil. At least one of an end portion of the plunger projection and an end portion of the core projection has an acute angle in a cross section along the axial direction. A distance between the end portion of the plunger projection and the end portion of the core projection is shortest among distances between the core and the plunger while the electromagnetic coil is not energized.Type: ApplicationFiled: June 27, 2012Publication date: January 10, 2013Applicant: HONDA MOTOR CO., LTD.Inventors: Hiroyasu OZAKI, Taneaki MIURA, Koichi TAKAKU, Koichi KATO, Hirokazu KUWABARA
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Patent number: 8313671Abstract: Disclosed are a heterocyclic compound characterized by being represented by formula (1), and a composition of the compound. Also disclosed is an organic electronic device using the compound. (In formula (1), X1, X2 and X3 each independently represents a sulfur atom or a selenium atom; and R1-R6 each independently represents an aromatic hydrocarbon group, an aliphatic hydrocarbon group, a halogen atom, a hydroxyl group, an alkoxyl group, a mercapto group, an alkylthio group, a boronic acid group, a nitro group, a substituted amino group, an amide group, an acyl group, a carboxyl group, an acyloxy group, a cyano group, a sulfo group, a sulfamoyl group, an alkylsulfamoyl group, a carbamoyl group, an alkylcarbamoyl group or a hydrogen atom, provided that all the R1-R6 are not hydrogen atoms at the same time.) The compound represented by formula (1) is suitable for use in an organic electronic device such as an organic EL element, an organic transistor element and a liquid crystal element.Type: GrantFiled: November 20, 2009Date of Patent: November 20, 2012Assignees: Hiroshima University, Nippon Kayaku Kabushiki KaishaInventors: Hirokazu Kuwabara, Masaaki Ikeda, Kazuo Takimiya
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Patent number: 8167140Abstract: A filter apparatus capable of releasing air from a filter body, comprising a filter body held by a holder. The filter body includes a fluid inlet and a fluid outlet. The filter body is disposed in the holder so as to rotate around an axis of rotation that passes through the fluid inlet. The holder includes a front panel. The front panel comprises engaging portions, for temporarily engaging the fluid outlet at either an air releasing position or at a filtering position, and a fixing means for fixing the filter body at each position. The filter apparatus further includes means for rotating the filter body.Type: GrantFiled: June 24, 2011Date of Patent: May 1, 2012Assignee: Entegris, Inc.Inventor: Hirokazu Kuwabara
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Patent number: 8124964Abstract: Disclosed is a field-effect transistor characterized by using a compound represented by the formula (1) below as a semiconductor material. (In the formula (1), X1 and X2 independently represent a sulfur atom, a selenium atom or a tellurium atom; and R1 and R2 independently represent an unsubstituted or halogeno-substituted C1-C36 aliphatic hydrocarbon group.Type: GrantFiled: October 19, 2007Date of Patent: February 28, 2012Assignees: Nippon Kayaku Kabushiki Kaisha, Hiroshima UniversityInventors: Kazuo Takimiya, Hideaki Ebata, Hirokazu Kuwabara, Masaaki Ikeda, Tatsuto Yui
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Publication number: 20110303910Abstract: A heterocyclic compound represented by formula (1) and a field effect transistor having a semiconductor layer comprising the compound. (In the formula, X1 and X2 each independently represents a sulfur atom or a selenium atom, and R1 and R2 each independently represents a C5-16 alkyl.Type: ApplicationFiled: February 25, 2010Publication date: December 15, 2011Applicants: NIPPON KAYAKU KABUSHIKI KAISHA, HIROSHIMA UNIVERSITYInventors: Hirokazu Kuwabara, Masaaki Ikeda, Kazuo Takimiya
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Publication number: 20110252973Abstract: A filter apparatus capable of releasing air from a filter body, comprising a filter body held by a holder. The filter body includes a fluid inlet and a fluid outlet. The filter body is disposed in the holder so as to rotate around an axis of rotation that passes through the fluid inlet. The holder includes a front panel. The front panel comprises engaging portions, for temporarily engaging the fluid outlet at either an air releasing position or at a filtering position, and a fixing means for fixing the filter body at each position. The filter apparatus further includes means for rotating the filter body.Type: ApplicationFiled: June 24, 2011Publication date: October 20, 2011Applicant: Entegris, Inc.Inventor: Hirokazu Kuwabara
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Publication number: 20110204295Abstract: Disclosed are a heterocyclic compound characterized by being represented by formula (1), and a composition of the compound. Also disclosed is an organic electronic device using the compound. (In formula (1), X1, X2 and X3 each independently represents a sulfur atom or a selenium atom; and R1-R6 each independently represents an aromatic hydrocarbon group, an aliphatic hydrocarbon group, a halogen atom, a hydroxyl group, an alkoxyl group, a mercapto group, an alkylthio group, a boronic acid group, a nitro group, a substituted amino group, an amide group, an acyl group, a carboxyl group, an acyloxy group, a cyano group, a sulfo group, a sulfamoyl group, an alkylsulfamoyl group, a carbamoyl group, an alkylcarbamoyl group or a hydrogen atom, provided that all the R1-R6 are not hydrogen atoms at the same time.) The compound represented by formula (1) is suitable for use in an organic electronic device such as an organic EL element, an organic transistor element and a liquid crystal element.Type: ApplicationFiled: November 20, 2009Publication date: August 25, 2011Applicants: HIROSHIMA UNIVERSITY, NIPPON KAYAKU KABUSHIKI KAISHAInventors: Hirokazu Kuwabara, Masaaki Ikeda, Kazuo Takimiya
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Patent number: 7997420Abstract: A filter apparatus capable of releasing air from a filter body, comprising a filter body held by a holder. The filter body includes a fluid inlet and a fluid outlet. The filter body is disposed in the holder so as to rotate around an axis of rotation that passes through the fluid inlet. The holder includes a front panel. The front panel comprises engaging portions, for temporarily engaging the fluid outlet at either an air releasing position or at a filtering position, and a fixing means for fixing the filter body at each position. The filter apparatus further includes means for rotating the filter body.Type: GrantFiled: August 13, 2007Date of Patent: August 16, 2011Assignee: Entegris, Inc.Inventor: Hirokazu Kuwabara
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Publication number: 20100137617Abstract: Disclosed is a method for producing an aromatic compound represented by the general formula (2) below, which is characterized in that a compound represented by the general formula (1) below is reacted with a sulfur compound (at least one member selected from the group consisting of sulfur, hydrogen sulfide, metal hydrosulfides and metal sulfides) or a selenium compound. (In the formula (1), R1 represents a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an ester group, an optionally substituted alkyl group having 1-18 carbon atoms or the like; R2 represents a halogen atom; R3 represents a hydrogen atom, C?C—R1 or R2; and n represents an integer of 0-4. When n is not less than 2, R3's may be the same as or different from each other.) (In the formula (2), R1, R3 and n are as defined in the formula (1); and X represents a sulfur atom or a selenium atom.Type: ApplicationFiled: May 13, 2008Publication date: June 3, 2010Applicants: Nippon Kayaku Kabushiki Kaisha, Hiroshima UniversityInventors: Hirokazu Kuwabara, Masaaki Ikeda, Kazuo Takimiya
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Patent number: 7723522Abstract: A method in which a pyridinium derivative such as 1,3-dimethyl-2,3-dihydro-2-oxopyrimidinium chloride is reacted with an acetyl compound such as 4-acetylpyridine, and then the reaction product is reacted with ammonia or an ammonium salt.Type: GrantFiled: February 1, 2005Date of Patent: May 25, 2010Assignee: Fujifilm Finechemicals Co., LtdInventors: Hirokazu Kuwabara, Chang Shan Zhang, Hiromitsu Saitoh, Takayuki Sonoda
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Publication number: 20100032655Abstract: Disclosed is a field-effect transistor characterized by using a compound represented by the formula (1) below as a semiconductor material. (In the formula (1), X1 and X2 independently represent a sulfur atom, a selenium atom or a tellurium atom; and R1 and R2 independently represent an unsubstituted or halogeno-substituted C1-C36 aliphatic hydrocarbon group.Type: ApplicationFiled: October 19, 2007Publication date: February 11, 2010Inventors: Kazuo Takimiya, Hideaki Ebata, Hirokazu Kuwabara, Masaaki Ikeda, Tatsuto Yui
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Publication number: 20100029947Abstract: The present invention provides pyridine derivatives useful as intermediates of drugs and agricultural chemicals, electrophotographic receptors, dyes and so on. More specifically, the invention relates to novel pyridyltetrahydropyridines and novel pyridylpiperidines, and further to a method of manufacturing pyridine derivatives through reaction between bipyridine derivatives and benzyl halide or benzyloxycarbonyl halide and subsequent reduction of the resultant reaction products with the aid of palladium catalysts, platinum catalysts, ruthenium catalysts or rhodium catalysts.Type: ApplicationFiled: October 9, 2009Publication date: February 4, 2010Inventors: Hirokazu Kuwabara, Takayuki Sonoda, Hiromitsu Saitoh, Hidehiro Arai
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Publication number: 20100000932Abstract: [Problems] To provide a filter apparatus improved in operability and maintainability during an air releasing operation for a filter apparatus by promoting a reduction in the size of a filter apparatus capable releasing air for a chemical solution. [Means for solving the problems] The holder (3) of a filter apparatus (1) comprises a front panel (5) and a rear panel (7) vertically positioned parallel with each other. The front panel (5) and the rear panel (7) are connected to each other through a connection portion capable of forming one of the upper panel (9), the side panel (109), and the bottom panel (209) of the holder. A center cutout (11) for rotatably engaging the fluid inlet of the filter body of the filter is formed in the front panel (5) of the holder (3) at a position corresponding to the fluid inlet of the filter body when the filter body is assembled with the holder (3).Type: ApplicationFiled: August 13, 2007Publication date: January 7, 2010Applicant: ENTEGRIS, INC.Inventor: Hirokazu Kuwabara
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Patent number: 7632950Abstract: The present invention provides pyridine derivatives useful as intermediates of drugs and agricultural chemicals, electrophotographic receptors, dyes and so on. More specifically, the invention relates to novel pyridyltetrahydropyridines and novel pyridylpiperidines, and further to a method of manufacturing pyridine derivatives through reaction between bipyridine derivatives and benzyl halide or benzyloxycarbonyl halide and subsequent reduction of the resultant reaction products with the aid of palladium catalysts, platinum catalysts, ruthenium catalysts or rhodium catalysts.Type: GrantFiled: August 18, 2004Date of Patent: December 15, 2009Assignee: Fujifilm Finechemicals Co., LtdInventors: Hirokazu Kuwabara, Takayuki Sonoda, Hiromitsu Saitoh, Hidehiro Arai
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Patent number: 7335430Abstract: A fuel cell system having a fuel cell consuming the hydrogen stored in the high-pressure hydrogen tank as fuel gas, a hydrogen supply line connecting the high-pressure hydrogen tank to the fuel cell, a primary decompressing means provided on the hydrogen supply line, a secondary decompressing means provided in the downstream side of the primary decompressing means on the hydrogen supply line, a hydrogen storage alloy tank saving a hydrogen storage alloy and thermal-exchangeably connected to the fuel cell, a hydrogen pipe connected between the primary decompressing means and the secondary decompressing means, and supplied for hydrogen transfer between the hydrogen supply line and the hydrogen storage alloy tank is provided, and a controlling means for introducing the hydrogen of the first prescribed pressure into the hydrogen storage alloy tank from the hydrogen supply line through the hydrogen pipe during the warm-up of the fuel cell.Type: GrantFiled: December 10, 2004Date of Patent: February 26, 2008Assignee: Honda Motor Co., Ltd.Inventors: Takahiro Kuriiwa, Ryoji Takenawa, Hirokazu Kuwabara
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Publication number: 20070278149Abstract: The present invention comprises a cartridge filter device having high filtration efficiency, having a long filter life, and capable of being produced at low cost. An out-in-pass-type pleated cartridge filter device has a filtration material, a core, a sleeve, and two end caps (upper and lower lid sections). In a filter material cross-section orthogonal to pleat folding, there are one mountain folding line (a), two valley folding lines (b) on both sides of the one mountain folding line, and two mountain folding lines (c) on both sides of the two valley folding lines. Thus the cartridge filter device includes a letter W-shaped section where there are one low mountain section on the sleeve side, two valley sections on the core side, on both sides of the one mountain section, and two high mountain sections on the sleeve side, on both sides of the two valley sections.Type: ApplicationFiled: October 13, 2006Publication date: December 6, 2007Inventors: Hirokazu Kuwabara, Koichi Kurata
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Patent number: 7301029Abstract: The invention provides a bipyridine derivative useful as an intermediate for pharmaceutical products, agricultural chemicals, electrophotographic photosensitive materials, dyes and the like, which is a bipyridine derivative represented by the general formula (I) and a salt thereof: wherein R1 represents an alkyl group with 2 to 20 carbon atoms having a substituent, substituted or unsubstituted aminomethyl group, trifluoromethyl group, substituted or unsubstituted thiomethyl group, substituted or unsubstituted alkenyl group, substituted or unsubstituted alkoxy group, substituted or unsubstituted aryloxy group, substituted carbonyl group, substituted sulfonyl group, unsubstituted or monosubstituted carbamoyl group, unsubstituted or monosubstituted sulfamoyl group, substituted or unsubstituted thiol group, unsubstituted or monosubstituted amino group, substituted carbonylamino group, substituted or unsubstituted ureido group, nitro group, cyano group, formyl group or an equivalent thereof, iodine atom or fluType: GrantFiled: August 12, 2004Date of Patent: November 27, 2007Assignee: Fujifilm Finechemicals Co., Ltd.Inventors: Hirokazu Kuwabara, Takayuki Sonoda, Hiromitsu Saitoh, Hidehiro Arai
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Publication number: 20070158343Abstract: A pressure vessel liner includes a tubular trunk, and head plates for closing opposite end openings of the trunk. Provided inside the trunk is a reinforcing member integral with the trunk and extending longitudinally of the trunk for dividing the interior of the trunk into a plurality of spaces. The two head plates are joined respectively to opposite ends of the reinforcing member. The pressure vessel liner has an enhanced pressure resistant strength against longitudinal forces.Type: ApplicationFiled: February 8, 2005Publication date: July 12, 2007Applicant: SHOWA DENKO K.K.Inventors: Toshiaki Shimada, Yasuki Yoshida, Hirokazu Kuwabara, Yasuhiro Osame, Yasuharu Kanno, Yasuji Kawamata, Hideyo Yamasaki
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Publication number: 20070093528Abstract: The present invention provides pyridine derivatives useful as intermediates of drugs and agricultural chemicals, electrophotographic receptors, dyes and so on. More specifically, the invention relates to novel pyridyltetrahydropyridines and novel pyridylpiperidines, and further to a method of manufacturing pyridine derivatives through reaction between bipyridine derivatives and benzyl halide or benzyloxycarbonyl halide and subsequent reduction of the resultant reaction products with the aid of palladium catalysts, platinum catalysts, ruthenium catalysts or rhodium catalysts.Type: ApplicationFiled: August 18, 2004Publication date: April 26, 2007Inventors: Hirokazu Kuwabara, Takayuki Sonoda, Hiromitsu Saitoh, Hidehiro Arai