Patents by Inventor Kohji Tamura
Kohji Tamura 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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Publication number: 20180128777Abstract: This sensor has: a first capacitance electrode comprising a plate-shaped conductor or semiconductor; a first terminal electrically connected to the first capacitance electrode; a first insulating film disposed at one surface of the first capacitance electrode; a second capacitance electrode comprising a conductor or semiconductor and disposed in a manner so as to oppose a portion of the first capacitance electrode with the first insulating film therebetween; a second terminal electrically connected to the second capacitance electrode; a variable resistance element disposed on the first insulating film; and a reaction section disposed on the other surface of the first capacitance electrode in a direct manner or with a second insulating film therebetween. The variable resistance element includes: a base body disposed on the first insulating film; a third terminal connected to one end of the base body; and a fourth terminal connected to the other end of the base body.Type: ApplicationFiled: January 3, 2018Publication date: May 10, 2018Inventors: Kohji TAMURA, Tsuneo KOGURE, Norio GOTO, Koichi MUKASA
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Publication number: 20150192540Abstract: This sensor has: a first capacitance electrode comprising a plate-shaped conductor or semiconductor, a first terminal electrically connected to the first capacitance electrode; a first insulating film disposed at one surface of the first capacitance electrode; a second capacitance electrode comprising a conductor or semiconductor and disposed in a manner so as to oppose a portion of the first capacitance electrode with the first insulating film therebetween; a second terminal electrically connected to the second capacitance electrode; a variable resistance element disposed on the first insulating film; and a reaction section disposed on the other surface of the first capacitance electrode in a direct manner or with a second insulating film therebetween. The variable resistance element includes: a base body disposed on the first insulating film; a third terminal connected to one end of the base body; and a fourth terminal connected to the other end of the base body.Type: ApplicationFiled: October 17, 2013Publication date: July 9, 2015Inventors: Kohji Tamura, Tsuneo Kogure, Norio Goto, Koichi Mukasa
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Publication number: 20130294959Abstract: Disclosed is a ferritic heat-resistant steel which has the following chemical composition (by weight): C: from 0.01% to less than 0.08%; Si: 0.30-1.0%; P: 0.02 or less; S: 0.010% or less; Mn: 0.2-1.2%; Ni: 0.3% or less; Cr: 8.0-11.0%; Mo: 0.1-1.2%; W: 1.0-2.5%; V: 0.10-0.30%; Nb: 0.02-0.12%; Co: 0.01-4.0%; N: 0.01-0.08%; B: not less than 0.001% and less than 0.010%; Cu: 0.3% or less; and Al: 0.010% or less, provided that the chemical composition satisfies the following equations: Mo(%)+0.5×W(%)=1.0-1.6, and C(%)+N(%)=0.02-0.15%, and which comprises a tempered martensite single-phase tissue produced by thermal refining and contains 30% by weight or less of 5 ferrite.Type: ApplicationFiled: June 28, 2013Publication date: November 7, 2013Inventors: Toshio FUJITA, Takashi SATO, Kohji TAMURA
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Publication number: 20110017355Abstract: Disclosed is a ferritic heat-resistant steel which has the following chemical composition (by weight): C: from 0.01% to less than 0.08%; Si: 0.30-1.0%; P: 0.02 or less; S: 0.010% or less; Mn: 0.2-1.2%; Ni: 0.3% or less; Cr: 8.0-11.0%; Mo: 0.1-1.2%; W: 1.0-2.5%; V: 0.10-0.30%; Nb: 0.02-0.12%; Co: 0.01-4.0%; N: 0.01-0.08%; B: not less than 0.001% and less than 0.010%; Cu: 0.3% or less; and Al: 0.010% or less, provided that the chemical composition satisfies the following equations: Mo (%)+0.5×W (%)=1.0-1.6, and C (%)+N (%)=0.02-0.15%, and which comprises a tempered martensite single-phase tissue produced by thermal refining and contains 30% by weight or less of ? ferrite.Type: ApplicationFiled: October 8, 2010Publication date: January 27, 2011Applicants: BABCOCK-HITACHI KABUSHIKI KAISHAInventors: Takashi SATO, Kohji TAMURA, Toshio FUJITA
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Publication number: 20090007991Abstract: Disclosed is a ferritic heat-resistant steel which has the following chemical composition (by weight): C: 0.01-0.10%; Si: 0.30-1.0%; P: 0.02 or less; S: 0.010% or less; Mn: 0.2-1.2%; Ni: 0.3% or less; Cr: 8.0-11.0%; Mo: 0.1-1.2%; W: 1.0-2.5%; V: 0.10-0.30%; Nb: 0.02-0.12%; Co: 0.01-4.0%; N: 0.01-0.08%; B: not less than 0.001% and less than 0.010%; Cu: 0.3% or less; and Al: 0.010% or less, provided that the chemical composition satisfies the following equations: Mo(%)+0.5×W(%)=1.0-1.6, and C(%)+N(%)=0.02-0.15%, and which comprises a tempered martensite single-phase tissue produced by thermal refining. The steel shows an excellent long-term creep rupture strength even when used at a steam temperature around 650˚C and also has excellent steam oxidizability. When the value represented by the equation: Al(%)+0.1×Ni(%) is adjusted to 0.02 or less, the creep strength can be more stabilized.Type: ApplicationFiled: February 6, 2007Publication date: January 8, 2009Applicants: BABCOCK-HITACHI KABUSHIKI KAISHAInventors: Takashi Sato, Kohji Tamura, Toshio Fujita
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Patent number: 6136110Abstract: This invention provides a ferritic heat-resistant steel suitable for a pressure-resistant member to be used at a temperature of 400 to 550.degree. C. The ferritic heat-resistant steel having an excellent high temperature strength contains, in terms of wt %, 0.05 to 0.15% of C, 0.10 to 0.08% of Si, 0.20 to 1.5% of Mn, 0.5 to 1.5% of Cr, 0.10 to 1.15% of Mo, 0.005 to 0.30% of V, 0.005 to 0.05% of Nb, 0.0002 to 0.0050% of B, and if necessary, 0.005 to 0.05% of Ti and 0.4 to 1.0% of W, either alone or in combination, and having a structure comprising not greater than 15% of pro-eutectoid ferrite, in terms of a metallic structural area ratio, and the balance of bainite. The present invention provides also a process for producing a ferritic heat-resistant steel having an excellent high temperature strength, comprising tempering the steel having the composition at a temperature within the range 950 to 1,010.degree. C., and conducting tempering while keeping a T.P. value within the range of 18.50.times.10.sup.Type: GrantFiled: August 18, 1997Date of Patent: October 24, 2000Assignees: Nippon Steel Corporation, Babcock-Hitachi Kabushiki Kaisha, Toshio FujitaInventors: Katsukuni Hashimoto, Hiroyuki Mimura, Takashi Sato, Kohji Tamura, Toshio Fujita
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Patent number: 5766376Abstract: This invention provides a ferritic heat-resistant steel having excellent HAZ softening resistance characteristics and exhibiting a high creep strength up to a high temperature of not lower than 500.degree. C., and a method of producing such a steel, the steel comprising in terms of mass %, 0.01 to 0.30% of C, 0.02 to 0.80% of Si, 0.20 to 1.50% of Mn, 0.50 to 5.00% of Cr, 0.01 to 1.50% of Mo, 0.01 to 3.50% of W, 0.02 to 1.00% of V, 0.01 to 0.50% of Nb, 0.001 to 0.06% of N, one or both of 0.001 to 0.8% of Ti and 0.001 to 0.8% of Zr, wherein a value (Ti+Zr) in (Cr, Fe, Ti, Zr) of a M.sub.23 C.sub.6 type carbide in the steel is 5 to 65%, and the present invention provides a method of producing the same.Type: GrantFiled: July 22, 1996Date of Patent: June 16, 1998Assignees: Nippon Steel Corporation, Babcock-Hitachi Kabushiki Kaisha, Toshio FujitaInventors: Yasushi Hasegawa, Hisashi Naoi, Takashi Sato, Kohji Tamura, Toshio Fujita
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Patent number: 5098535Abstract: A process for the preparation in high yield of 14.alpha.-hydroxy-4-androstene-3,6,17-trione which has an aromatase inhibition activity and is useful as an antitumor agent, in which the 6.beta.-hydroxyl group of 6.beta., 14.alpha.-dihydroxy-4-androstene-3,17-dione is selectively oxidized with the aid of visible light energy.Type: GrantFiled: February 6, 1990Date of Patent: March 24, 1992Assignee: Snow Brand Milk Products Co., Ltd.Inventors: Masamichi Nakakoshi, Kohji Tamura, Makoto Yoshihama, Nobuo Miyata
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Patent number: 5087381Abstract: A refrigerant comprising (1) dichlorotrifluoroethane and (2) at least one compound selected from the group consisting of chlorotetrafluoroethane, pentafluoroethane, tetrafluoroethane, 1-chloro-1,1-difluoroethane, 1,1,1-trifluoroethane and 1,1-difluoroethane.Type: GrantFiled: February 15, 1990Date of Patent: February 11, 1992Assignee: Daikin Industries, Ltd.Inventors: Kohji Tamura, Hiroshi Kashiwagi, Masahiro Noguchi
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Patent number: 5047176Abstract: Incombustible azeotropic like solvent compositions comprising 87 to 92 parts by weight of 1,1,2-trichloro-1,2,2-trifluoroethane and 8 to 13 parts by weight of hydrocarbons, said hydrocarbons have a boiling point of 49.degree. to 58.degree. C.Type: GrantFiled: December 23, 1988Date of Patent: September 10, 1991Assignee: Daikin Industries, Ltd.Inventors: Kohji Tamura, Yukio Omure, Satoshi Ide, Naoyoshi Hanatani, Toshimasa Fukuzawa
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Patent number: 5035828Abstract: Solvents or solvent compositions comprising HCFC-234. The solvents can be used, instead of CFC-113, as solvents, diluents, cleaning agents, drying agents or dispersing agents. The solvent compositions of HCFC-234 with an aliphatic alcohol having 1 to 4 carbon atoms or with cyclohexane can give azeotropic compositions.Type: GrantFiled: December 19, 1989Date of Patent: July 30, 1991Assignee: Daikin Industries, Ltd.Inventors: Kohji Tamura, Yukio Omure, Satoshi Ide
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Patent number: 4973421Abstract: An azeotropic solvent composition which comprises an azeotropic mixture of 77% by weight of Flon-113 and 23% by weight of cyclopentane. The composition can decrease the amount of 1,1,2-trichloro-1,2,2-trifluoroethane excellent in power for dissolving fats and oil, grease, and particularly, waxes used for temporarily fixing silicon wafers, quartz, ceramics without erosion of materials made of plastics and rubbers, and it is easy to control the liquid composition and easy to recover and reuse the composition.Type: GrantFiled: January 18, 1989Date of Patent: November 27, 1990Assignee: Daikin Industries, Ltd.Inventors: Kohji Tamura, Yukio Omure, Satoshi Ide, Naoyoshi Hanatani, Toshimasa Fukuzawa
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Patent number: 4957652Abstract: A refrigerant comprising (1) dichlorotrifluoroethane and (2) at least one compound selected from the group consisting of chlorotetrafluoroethane, pentafluoroethane, tetrafluoroethane, 1-chloro-1,1-difluoroethane, 1,1,1-trifluoroethane and 1,1-difluoroethane.Type: GrantFiled: October 18, 1988Date of Patent: September 18, 1990Assignee: Daikin Industries, Ltd.Inventors: Kohji Tamura, Hiroshi Kashiwagi, Masahiro Noguchi
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Patent number: 4923626Abstract: A refrigerant comprising chloro-difluoromethane and 1,1,1-trifluoroethane.Type: GrantFiled: October 28, 1988Date of Patent: May 8, 1990Assignee: Daikin Industries, Ltd.Inventors: Kohji Tamura, Hiroshi Kashiwagi, Masahiro Noguchi
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Patent number: 4896509Abstract: The invention provides a working fluid for Rankine cycle comprising 1,2-dichloro-1,1,2,-trifluoro-ethane; and a process for converting thermal energy into mechanical energy in the Rankine cycle in which a cycle is repeated comprising the steps of vaporizing a working fluid comprising 1,2-dichloro-1,1,2-trifluoroethane with a hot heat source, expanding the resultant vapor in an expansion device, cooling it with a cold heat source to condense and compressing it by a pump.Type: GrantFiled: November 3, 1988Date of Patent: January 30, 1990Assignee: Daikin Industries. Ltd.Inventors: Kohji Tamura, Hiroshi Kashiwagi, Masahiro Noguchi
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Patent number: 4768383Abstract: Disclosed is a method of predicting the remaining lifetime of a metal material, wherein the shapes of grains of the metal material are quantitatively measured to obtain variations in the shapes of the grains, and the remaining lifetime of the metal material is predicted on the basis of the variations. In accordance with the present invention, it is possible to statistically arrange the variations in the shapes of the grains by measuring such variations sequentially in time.Type: GrantFiled: October 16, 1987Date of Patent: September 6, 1988Assignee: Babcock-Hitachi Kabushiki KaishaInventors: Teruo Koyama, Kohji Tamura
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Patent number: 4476509Abstract: A thin film magnetic head is composed of a first thin film of a magnetic material deposited on a non-magnetic substrate. A V-like groove is formed in the first magnetic thin film with a depth reaching the non-magnetic substrate. One wall face of the V-like groove is deposited with a non-magnetic thin film, and the V-like groove is filled with a second magnetic thin film. A magnetic gap provided by the non-magnetic thin film is used as the magnetic head gap.Type: GrantFiled: February 17, 1982Date of Patent: October 9, 1984Assignee: Hitachi, Ltd.Inventors: Katsuo Konishi, Kanji Kawano, Kohji Tamura, Mitsuo Abe
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Patent number: 4457955Abstract: A process for producing cobalt-modified iron oxide particles, which comprises the steps of:(1) adding to magnetic iron oxide particles(a) a cobalt compound,(b) an iron component which is either (b.sub.1) a ferric compound at an atomic ratio to the cobalt compound in the range of 0.68 to 2 or (b.sub.2) a combination of a ferrous compound and a ferric compound, and(c) an alkali at a concentration enough to cause the cobalt and iron to precipitate as hydroxides; and(2) heating the mixture at a temperature of at least 50.degree. C. and not higher than the reflux temperature thereof in a non-oxidizing atmosphere.Type: GrantFiled: December 29, 1982Date of Patent: July 3, 1984Assignee: Daikin Kogyo Company, Ltd.Inventors: Kazuo Okamura, Kohji Tamura, Shigeo Daimon, Yoshiyuki Shibuya
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Patent number: 4252129Abstract: In a device for measuring motion of living body organs, an essential part which defines the oscillation frequency of the oscillator circuit of the device for measuring same comprises an electro-mechanical oscillator of a quartz resonator and impedance elements as coils or capacitors. The motion of organs on a living body surface or in a living body causes impedance changes in an impedance element and therefore, the detector is capable of detecting and measuring living body organ motion through a change in frequency.Type: GrantFiled: November 7, 1978Date of Patent: February 24, 1981Inventors: Kohji Tamura, Yoshiaki Saitoh
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Patent number: 4186481Abstract: A method for fabricating a rear core for the magnetic circuit of a Hall effect magnetic head is disclosed. The bottom size of the rear core protrusion is made substantially equal to the size of a Hall element. A gap is provided between the Hall element and the rear core. In order to minimize the gap, the rear core block is provided with supports for fabrication, whereby the gap between the Hall element and the bottom protrusion of the rear core is positioned accurately. The supports are removed at the end of fabrication. The bottom protrusion of the rear core prevented pressure from being applied to the Hall element, thus improving the sensitivity of the Hall effect magnetic head without increasing noises.Type: GrantFiled: September 5, 1978Date of Patent: February 5, 1980Assignee: Hitachi, Ltd.Inventors: Takaharu Noguchi, Takao Ketori, Kohji Tamura, Tetsu Oi, Yutaka Miyoshi