Patents by Inventor Takeshi Shibano
Takeshi Shibano 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: 8731131Abstract: In a method of reducing corrosion of a material constituting a nuclear reactor structure, an electrochemical corrosion potential is controlled by injecting a solution or a suspension containing a substance generating an excitation current by an action of at least one of radiation, light, and heat existing in a nuclear reactor, or a metal or a metallic compound forming the substance generating the excitation current under the condition in the nuclear reactor to allow the substance generating the excitation current to adhere to the surface of the nuclear reactor structural material, and by injecting hydrogen in cooling water of the nuclear reactor while controlling the hydrogen concentration in a feed water.Type: GrantFiled: September 14, 2012Date of Patent: May 20, 2014Assignees: Kabushiki Kaisha Toshiba, Ishikawajima-Harima Heavy Industries Co., Ltd., The Tokyo Electric Power Company, IncorporatedInventors: Seiji Yamamoto, Tadasu Yotsuyanagi, Nagayoshi Ichikawa, Tetsuo Oosato, Masato Okamura, Junichi Takagi, Kenji Yamazaki, Shunichi Suzuki, Kenro Takamori, Mitsuru Sambongi, Takeshi Shibano, Takashi Hirano, Yuichi Fukaya
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Publication number: 20130070888Abstract: In a method of reducing corrosion of a material constituting a nuclear reactor structure, an electrochemical corrosion potential is controlled by injecting a solution or a suspension containing a substance generating an excitation current by an action of at least one of radiation, light, and heat existing in a nuclear reactor, or a metal or a metallic compound forming the substance generating the excitation current under the condition in the nuclear reactor to allow the substance generating the excitation current to adhere to the surface of the nuclear reactor structural material, and by injecting hydrogen in cooling water of the nuclear reactor while controlling the hydrogen concentration in a feed water.Type: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Applicants: KABUSHIKI KAISHA TOSHIBA, THE TOKYO ELECTRIC POWER COMPANY, INCORPORATED, ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD.Inventors: Seiji YAMAMOTO, Tadasu Yotsuyanagi, Nagayoshi Ichikawa, Tetsuo Oosato, Masato Okamura, Junichi Takagi, Kenji Yamazaki, Shunichi Suzuki, Kenro Takamori, Mitsuru Sambongi, Takeshi Shibano, Takashi Hirano, Yuichi Fukaya
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Patent number: 8295426Abstract: In a method of reducing corrosion of a material constituting a nuclear reactor structure, an electrochemical corrosion potential is controlled by injecting a solution or a suspension containing a substance generating an excitation current by an action of at least one of radiation, light, and heat existing in a nuclear reactor, or a metal or a metallic compound forming the substance generating the excitation current under the condition in the nuclear reactor to allow the substance generating the excitation current to adhere to the surface of the nuclear reactor structural material, and by injecting hydrogen in cooling water of the nuclear reactor while controlling the hydrogen concentration in a feed water.Type: GrantFiled: December 10, 2004Date of Patent: October 23, 2012Assignees: Kabushiki Kaisha Toshiba, Ishikawajima-Harima Heavy Industries Co., Ltd., The Tokyo Electric Power Company, IncorporatedInventors: Seiji Yamamoto, Tadasu Yotsuyanagi, Nagayoshi Ichikawa, Tetsuo Oosato, Masato Okamura, Junichi Takagi, Kenji Yamazaki, Shunichi Suzuki, Kenro Takamori, Mitsuru Sambongi, Takeshi Shibano, Takashi Hirano, Yuichi Fukaya
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Publication number: 20120263269Abstract: In a method of reducing corrosion of a material constituting a nuclear reactor structure, an electrochemical corrosion potential is controlled by injecting a solution or a suspension containing a substance generating an excitation current by an action of at least one of radiation, light, and heat existing in a nuclear reactor, or a metal or a metallic compound forming the substance generating the excitation current under the condition in the nuclear reactor to allow the substance generating the excitation current to adhere to the surface of the nuclear reactor structural material, and by injecting hydrogen in cooling water of the nuclear reactor while controlling the hydrogen concentration in a feed water.Type: ApplicationFiled: December 10, 2004Publication date: October 18, 2012Applicants: Kabushiki Kaisha Toshiba, THE TOKYO ELECTRIC POWER COMPANY, INCORPORATED, Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Seiji Yamamoto, Tadasu Yotsuyanagi, Nagayoshi Ichikawa, Tetsuo Oosato, Masato Okamura, Junichi Takagi, Kenji Yamazaki, Shunichi Suzuki, Kenro Takamori, Mitsuru Sambongi, Takeshi Shibano, Takashi Hirano, Yuichi Fukaya
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Publication number: 20120199851Abstract: A semiconductor relay includes two MOSFETs; a light emitting element; a light-receiving drive element for switching on and off the two MOSFETs; two output and two input conductor plates electrically connected to the two MOSFETs and the light emitting element, respectively; and an encapsulating resin encapsulating the two MOSFETs, the light emitting element, the light-receiving drive element, the two output and the two input conductor plates. The two output and two input conductor plates includes terminal portions which protrude outside the encapsulating resin and are mounted on a common printed circuit board. Further, the two output conductor plates includes mount portions on which the two MOSFETs are mounted or on which drain electrodes of the two MOSFETs are connected, and the mount portions are encapsulated by the encapsulating resin in such an orientation that a thickness direction of the mount portions intersects that of the printed circuit board.Type: ApplicationFiled: October 7, 2010Publication date: August 9, 2012Applicant: Panasonic CorporationInventors: Narutoshi Hoshino, Yoshihiro Fujiwara, Takeshi Shibano, Shinsuke Taka
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Patent number: 5086133Abstract: There is provided a process for producing a highly water absorptive polymer, which comprises making up a mixture (A) comprising an aqueous solution of (a) a partially neutralized product of acrylic acid with 20% or more of carboxylic groups being neutralized to an alkali metal salt or ammonium salt, (b) a crosslinking agent having two or more copolymerizable vinyl groups in one molecule, (c) a basic vinyl monomer in a quantity of 20 mol % or less based on said partially neutralized product of acrylic acid, (d) a nonionic surfactant with HLB of 7 or more and (e) an oxidative radical polymerization initiator, said mixture (A) being maintained at a temperature of 50.degree. C. or lower, and a mixture (B) comprising an amine or a reducing agent dissolved in water or in said mixture (A) from which at least the component (e) is removed, and mixing both the mixtures to cause polymerization.Type: GrantFiled: May 17, 1991Date of Patent: February 4, 1992Assignee: Mitsubishi Petrochemical Company LimitedInventors: Kiichi Itoh, Takeshi Shibano, Kenji Yoshinaga
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Patent number: 5077434Abstract: Vapor phase catalytic oxidation of propylene into acrolein in the first step and then into acrylic acid in the second step has been improved (1) by utilizing as a diluent for the oxidation in the first step the effluent gas from the second step after the acrylic acid produced has been recovered therefrom and after it has been catalytically combusted and (2) by specifying operation conditions set in view of the recycle of the combusted "waste" gas.The improved process, embodying the present invention, has made it possible to produce a high concentration of acrylic acid as both gas and condensation and also to prolong the catalytic activity of a Mo-Bi composite oxide catalyst used for the first oxidation reaction.Type: GrantFiled: December 7, 1987Date of Patent: December 31, 1991Assignee: Mitsubishi Petrochemical Company LimitedInventors: Kohei Sarumaru, Takeshi Shibano
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Patent number: 5059664Abstract: A process for the preparation of water absorptive resins which comprises supplying a solution containing at least 20% by weight of a water soluble ethylenically unsaturated monomer as a main component to a polymerization vessel accommodating a vapor phase comprising steam or a mixture of steam with at least one gas substantially inert with respect to polymerization, and polymerizing the monomer in the vapor phase under the relative humidity conditions in the vapor phase of 30% or more.Type: GrantFiled: June 22, 1989Date of Patent: October 22, 1991Assignee: Mitsubishi Petrochemical Company LimitedInventors: Shuhei Yada, Takeshi Shibano, Kiichi Itoh, Kenji Yoshinaga
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Patent number: 5048601Abstract: A shell-and-tube apparatus, more specifically, a shell-and-tube reactor, which includes a vessel, at least one intermediate tube plate sectioning the interior of the vessel into at least two compartments having different temperatures, a number of heat transferring tubes penetrating the intermediate tube plate or plates, and a fluid passing through the tubes which is heated or cooled by a heat transfer medium surrounding the tubes. At least one insulation plate or plates are provided on one or both sides of the intermediate tube plate so that the space between the intermediate tube plate or plates and, if two or more insulation plates are used, the space or spaces between the insulation plates may be utilized as a stagnation zone for the heat transfer medium, so as to make the temperature gradient through the intermediate tube plate or plates gentle and relax the thermal stress occurring in the body wall.Type: GrantFiled: February 16, 1990Date of Patent: September 17, 1991Assignees: JGC Corporation, Mitsubishi Petrochemical Co., Ltd.Inventors: Katsunobu Yamaguchi, Tateo Kurihara, Isamu Yanai, Kazuo Kikuchi, Tomoo Saito, Suguru Hamanaka, Teruo Nagai, Yasuyuki Sakakura, Takeshi Shibano, Yoji Kawatani, Tadahiko Kondoh
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Patent number: 4957984Abstract: A process for producing a highly water adsorptive polymer, which comprises subjecting an aqueous solution of partially neutralized sodium acrylate wherein 20 to 50% or less of the carboxyl group has been neutralized to its sodium salt, the concentration of the partially neutralized sodium acrylate in the aqueous solution being 45 to 80% by weight, to solution polymerization in the presence of a crosslinking agent and optionally not exceeding 20 mol % based on the partially neutralized sodium acrylate of at least one basic vinyl monomer selected from the group consisting of (meth)acrylamide, N,N-dimethyl(meth)acrylamide, dimethylaminoethyl(meth)acrylamide, 2-vinylpyridine, and 4-vinylpyridine with the use of a water soluble radical polymerization initiator.Type: GrantFiled: June 16, 1989Date of Patent: September 18, 1990Assignee: Mitsubishi Petrochemical Company LimitedInventors: Kiichi Itoh, Takeshi Shibano, Shuhei Yada, Shinji Tsunoi
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Patent number: 4948659Abstract: There is provided a process for preparing a water absorptive composite, which comprises the combination of the steps of (A) applying an aqueous solution containing (a) a polymerizable monomer comprising as a main component acrylic acid, of which 20% or more of the carboxyl groups have been neutralized to its alkali metal salt or ammonium salt, (b) a crosslinking agent, (c) a polyoxyethylene acyl ester with HLB of 7 or more and (d) an oxidative radical polymerization initiator to a prefabricated fibrous substrate and (B) polymerizing the polymerizable monomer applied to the fibrous substrate with addition of a reducing agent to form a composite of a polymer derived from the polymerizable monomer and the fibrous substrate.Type: GrantFiled: November 4, 1988Date of Patent: August 14, 1990Assignees: Mitsubishi Petrochemical Company Limited, Uni-Charm CorporationInventors: Kiichi Itoh, Takeshi Shibano
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Patent number: 4892754Abstract: There is provided a process for preparing a water absorptive composite material, which comprises the combination of the following steps:(A) applying an aqueous solution of polymerizable monomers comprising as a main component acrylic acid, of which 20% or more of the carboxyl groups have been neutralized to its alkali metal salt or ammonium salt, to a prefabricated fibrous substrate;(B) polymerizing the polymerizable monomers applied to said fibrous substrate to form a composite of a polymer derived from said polymerizable monomers and said fibrous substrate; and(C) irradiating ultraviolet rays onto said composite with its water content being 0.01 to 40 parts by weight per 1 part by weight of said polymer to obtain a water absorptive composite having a lower content of unpolymerized monomers than said composite.Type: GrantFiled: April 15, 1988Date of Patent: January 9, 1990Assignees: Mitsubishi Petrochemical Company Limited, Uni-Charm CorporationInventors: Kiichi Itoh, Takeshi Shibano
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Patent number: 4873368Abstract: Propylene in admixture with molecular oxygen and steam is subjected to a two-step, vapor-phase, catalytic oxidation to convert into acrolein and then into acrylic acid. At least the first-step reaction is conducted in tubes of an apparatus of a shell-and-tube heat-exchanger type structure, and the reaction product of the first-step reaction is quenched before it is subjected to the second-step reaction. Reaction conditions in both the steps are specified.Type: GrantFiled: September 29, 1982Date of Patent: October 10, 1989Assignee: Mitsubishi Petrochemical Company LimitedInventors: Koju Kadowaki, Kohei Sarumaru, Takeshi Shibano
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Patent number: 4865886Abstract: There is provided a process for preparing a water absorptive composite material, which comprises the combination of the following steps of:(A) applying an aqueous solution of a polymerizable monomer comprising as a main component acrylic acid, of which 20% or more of the carboxyl groups have been neutralized to its alkali metal salt or ammonium salt, to a prefabricated fibrous substrate;(B) polymerizing the polymerizable monomers applied to said fibrous substrate to form a composite of a polymer derived from said polymerizable monomer and said fibrous substrate; and(C) adding to said composite a crosslinking agent having two or more functional groups reactive with the carboxyl groups and/or carboxylate groups contained in the polymer to react therewith.Type: GrantFiled: August 24, 1987Date of Patent: September 12, 1989Assignees: Mitsubishi Petrochemical Company Limited, Uni-Charm CorporationInventors: Kiichi Itoh, Takeshi Shibano
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Patent number: 4842927Abstract: A process for preparing a water absorptive composite consisting of a highly water absorptive polymer and a prefabricated fibrous substrate, which comprises applying an aqueous solution containing (a) a polymerizable monomer comprising as a main component acrylic acid, of which 20% or more of the carboxyl groups have been neutralized to its alkali metal salt or ammonium salt, (b) 2-vinylpyridine or(and) 4-vinylpyridine or(and) their salts, (c) a crosslinking agent and (d) an oxidative radical polymerization initiator to a prefabricated fibrous substrate, and then carrying out polymerization with addition of a reducing agent.Type: GrantFiled: May 26, 1988Date of Patent: June 27, 1989Assignees: Mitsubishi Petrochemical Company Limited, Uni-Charm CorporationInventors: Kiichi Itoh, Takeshi Shibano
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Patent number: 4837360Abstract: Acrolein and acrylic acid are produced by vapor-phase catalytic oxidation of propylene in a multi-tubular, fixed-bed reaction vessel with the use of a composite oxide catalyst represented by the formula Mo.sub.a Bi.sub.b Fe.sub.c A.sub.d B.sub.e C.sub.f D.sub.g Si.sub.h O.sub.x, wherein A, B, C, and D represent components selectable from respective groups of elements, and the subscripts a through h and x are specific numbers of atoms of respective elements and groups of elements. This catalyst is adapted and packed in each reaction tube in a manner such that its activity is controlled to increase from the inlet toward the outlet of the tube.Type: GrantFiled: September 23, 1982Date of Patent: June 6, 1989Assignee: Mitsubishi Petrochemical Company Ltd.Inventors: Koju Kadowaki, Kohei Sarumaru, Takeshi Shibano
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Patent number: 4835020Abstract: Aqueous solution of alkali or ammonium acrylate is applied to a prefabricated fibrous substrate, and the acrylate is subjected to polymerization in two steps, namely the first step in which the acrylate is polymerized by means of a radical polymerization initiator and the second step which is subsequent to the first step and in which the unpolymerized acrylate is polymerized by means of heat treatment at 100.degree.-250.degree. C.Type: GrantFiled: July 16, 1987Date of Patent: May 30, 1989Assignee: Mitsubishi Petrochemical Company LimitedInventors: Kiichi Itoh, Takeshi Shibano
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Patent number: 4755560Abstract: A process for producing a highly water-absorbing polymer, which comprises treating a water-absorbing polymer containing a carboxyl group and/or a carboxylate group with a silane coupling agent in the presence of water.Type: GrantFiled: June 26, 1987Date of Patent: July 5, 1988Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Kiichi Ito, Takeshi Shibano
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Patent number: 4738867Abstract: Aqueous solution of alkali or ammonium acrylate is applied to a prefabricated fibrous substrate, and the acrylate is subjected to polymerization in two steps, namely the first step in which the acrylate is polymerized by means of a radical polymerization initiator and the second step which is subsequent to the first step and in which the unpolymerized acrylate is polymerized by means of irradiation with electromagnetic radiation or corpuscular ionizing radiation.Type: GrantFiled: July 1, 1987Date of Patent: April 19, 1988Assignee: Mitsubishi Petrochemical Company, LimitedInventors: Kiichi Itoh, Takeshi Shibano
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Patent number: 4625059Abstract: A 1,2-unsaturated carboxylic acid or its ester such as acrylic or methacrylic acid or its alkyl ester is purified to remove aldehyde impurities contained therein by treating the acid or its ester with a mercapto containing compound in the presence of an acid catalyst.Type: GrantFiled: June 22, 1984Date of Patent: November 25, 1986Assignee: 501 Mitsubishi Petrochemical Company, Ltd.Inventors: Takeshi Shibano, Yasuyuki Sakakura, Kiichi Ito, Kazuhiko Higuchi