Patents Assigned to Seisan Kaihatsu Kagaku Kenkyusho
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Patent number: 5670458Abstract: An oxide superconductor having a composition of the formula: A.sub.n+1 Cu.sub.n O.sub.2n+1+.delta. in which A is at least one alkaline earth metal element selected from the group consisting of calcium, strontium and barium, n is an integer of at least one, and .delta. is a number larger than 0 and not larger than 1, a laminate structure in which a layer having a partial composition of A.sub.2 O.sub.1+.delta. and a layer having a partial composition of A.sub.n-1 Cu.sub.n O.sub.2n are alternately laminated, and a superconductive critical temperature equal to or higher than the liquid nitrogen temperature.Type: GrantFiled: February 7, 1996Date of Patent: September 23, 1997Assignees: Seisan Kaihatsu Kagaku Kenkyusho, NEC CorporationInventors: Mikio Takano, Zenji Hiroi, Yasuo Takeda, Toshio Takada, deceased, by Komichi Takada, administrator, by Jun Takada, administrator, by Kei Takada, administrator
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Patent number: 5552073Abstract: Ferromagnetic granular ultrafine particles consisting essentially of .epsilon.' iron carbide represented by the composition formula:.epsilon.'-Fe.sub.2.2 Chaving an average particle size of about 0.01 to 0.2 .mu.m, and ferromagnetic acicular ultrafine particles consisting essentially of .epsilon.' iron carbide represented by the composition formula:.epsilon.'-Fe.sub.2.2 Chaving a major axis of about 0.05 to 0.5 .mu.m, a minor axis of about 0.01 to 0.06 and an axial ratio of 4 to 20, which have good coercive force and a small magnetic domain.Type: GrantFiled: September 3, 1993Date of Patent: September 3, 1996Assignees: Seisan Kaihatsu Kagaku Kenkyusho, Kyodo Oxygen Co., Ltd.Inventors: Yasushi Tomiku, Hideaki Takano, Yoshichika Bando
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Patent number: 5514469Abstract: A magnetoresistance effect element having a substrate, a buffer layer of a metal selected from the group consisting of chromium, tungsten, titanium, vanadium, manganese and their alloys which is formed on the substrate, and at least two magnetic thin layers which are laminated with interposing a non-magnetic thin layer therebetween on the metal thin layer, wherein adjacent magnetic thin layers through the non-magnetic thin layer have different coercive forces. This magnetoresistance effect element has an increased magnetoresistance ratio.Type: GrantFiled: January 17, 1995Date of Patent: May 7, 1996Assignees: Ube Industries, Ltd., Kanegafuchi Chemical Industry Co., Ltd., Nippon Steel Corporation, TDK Corporation, Tosoh Corporation, Toyo Boseki Kabushiki Kaisha, Japan Energy Corporation, NEC Corporation, Matsushita Electric Industrial Co., Ltd., Seisan Kaihatsu Kagaku KenkyushoInventors: Teruya Shinjo, Hidefumi Yamamoto, Toshihiko Anno, Toshio Takada
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Patent number: 5489609Abstract: The present invention covers 2-aminoethanesulfonic acid zinc complex compound as represented by the formula [I]: ##STR1## as well as a process for producing the same, and an anti-hepatitis agent, liver function improving agent and anti-ulcer agent. As compared with 2-aminoethanesulfonic acid, glutathione and glycyrrhizin, the compound (I) of the present invention exhibits improved anti-hepatitis activity, and also strengthens detoxicating activity toward various compounds to thereby develop liver function improving activity, while the said compound shows excellent anti-ulcer activity but greatly lowered toxicity.Type: GrantFiled: December 15, 1994Date of Patent: February 6, 1996Assignee: Zaidan Hoijn Seisan Kaihatsu Kagaku KenkyushoInventors: Hajime Fujimura, Takahiro Yabuuchi, Teruo Tanaka, Yoichi Nagamura
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Patent number: 5475028Abstract: The present invention relates to a 2-aminoethanesulfonic acid zinc complex represented by the following formula: ##STR1## (wherein M is an alkali metal atom), to a process for producing the said complex from 2-aminoethanesulfonic acid and to use of the said complex as an anti-hepatitis agent, liver function improving agent and anti-ulcer agent. The said complex exhibits not only improved physiological activities such as anti-hepatitis activity, suppressory activity against liver-function disorder and anti-ulcer activity but also protective and restorative activity for the digestive tract.Type: GrantFiled: July 13, 1994Date of Patent: December 12, 1995Assignee: Zaidan Hojin Seisan Kaihatsu Kagaku KenkyushoInventors: Hajime Fujimura, Takahiro Yabuuchi, Teruo Tanaka, Yoichi Nagamura
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Patent number: 5462795Abstract: There is provided a magnetoresistance effect element comprising a substrate and at least two magnetic thin layers which are laminated with interposing a non-magnetic thin layer therebetween on said substrate, wherein adjacent magnetic thin layers through the non-magnetic thin layer have different coercive forces, characterized in that a metal thin film is provided in an interface between at least one of the magnetic layers and the non-magnetic layer which is adjacent thereto, and the metal thin film is made of a substance which is different from that of the adjacent non-magnetic layer.Type: GrantFiled: December 17, 1992Date of Patent: October 31, 1995Assignees: Ube Industries, Ltd., Nippon Steel Corporation, TDK Corporation, Tosoh Corporation, Japan Energy Corporation, NEC Corporation, Matsushita Electric Industrial Co., Ltd., Seisan Kaihatsu Kagaku KenkyushoInventors: Teruya Shinjo, Hidefumi Yamamoto, Toshihiko Anno, Toshio Takada
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Patent number: 5432661Abstract: A magnetoresistance effect element is provided which comprises a substrate on which a first magnetic layer having a thickness of 0.2 to 5 nm which contains cobalt, a second magnetic layer having a thickness of not larger than 5 nm which contains iron or nickel or an alloy thereof, a third magnetic layer having a thickness of 0.2 to 5 nm which contains cobalt and a nonmagnetic layer having a thickness of 0.5 to 5 nm are laminated in this order at least twice, wherein the thickness of the second magnetic layer is not larger than half of the total thickness of the first and third magnetic layers. The element is useful as a magnetoresistance sensor or head.Type: GrantFiled: February 3, 1994Date of Patent: July 11, 1995Assignee: Seisan Kaihatsu Kagaku KenkyushoInventors: Teruya Shinjo, Yasuhiro Kawawake, Toshio Takada, deceased
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Patent number: 5362711Abstract: A process for forming a single crystal superconducting LnA.sub.2 Cu.sub.3 O.sub.7-x film, wherein Ln is at least one rare earth element and A is at least one alkaline earth element, is disclosed, which comprises simultaneously evaporating Ln, A and Cu in an atomic ratio of about 1:2:3 from discrete evaporation sources of Ln, A and Cu onto a heated substrate in a vacuum vessel while blowing an oxygen gas onto the substrate to form an oxygen-containing atmosphere, thereby forming the single crystal superconducting film on the substrate.Type: GrantFiled: April 27, 1993Date of Patent: November 8, 1994Assignees: Kanegafuchi Chemical Industry Co., Ltd., Matsushita Electric Inductris Co., Ltd., NEC Corporation, Nippon Mining Co., Ltd., Nippon Steel Corporation, TDK Corporation, Tosoh Corporation, Toyo Boseki Kabushiki Kaisha, Seisan Kaihatsu Kagaku Kenkyusho, Ube Industries, Ltd.Inventors: Toshio Takada, Takahito Terashima, Yoshichika Bando
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Patent number: 5350606Abstract: A ferroelectric thin film consisting of a single crystal of BaTiO.sub.3 which has a perovskite structure is produced by a method comprising evaporating Ba and Ti in an atomic ratio of 1:1 from discrete evaporation sources of Ba and Ti to deposit them on a substrate in a vacuum deposition vessel while supplying a small amount of an oxygen gas to the reactor.Type: GrantFiled: June 9, 1993Date of Patent: September 27, 1994Assignees: Kanegafuchi Chemical Industry Co., Ltd., Nippon Steel Corporation, NEC Corporation, Seisan Kaihatsu Kagaku KenkyushoInventors: Toshio Takada, Takahito Terashima, Kenji Iijima, Kazunuki Yamamoto, Kazuto Hirata, Yoshichika Bando
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Patent number: 5315282Abstract: A magnetoresistance effect element including a substrate and at least two magnetic thin layers which are laminated with interposing a non-magnetic thin layer therebetween on said substrate, wherein adjacent magnetic thin layers through the non-magnetic thin layer have different coercive forces and each of the magnetic thin layers and the non-magnetic layer has a thickness of not larger than 200 .ANG., which has a large magnetoresistance ratio of several % to several ten % at a small external magnetic field of several Oe to several ten Oe and can provide a MR sensor having a high sensitivity and a MR head which achieves high density magnetic recording.Type: GrantFiled: January 21, 1992Date of Patent: May 24, 1994Assignees: Ube Industries, Ltd., Kanegafuchi Chemical Industry Co., Ltd., Nippon Steel Corporation, TDK Corporation, Tosoh Corporation, Toyo Boseki Kabushiki Kaisha, Nippon Mining Co., Ltd., NEC Corporation, Matsushita electgric Industrial Co., Ltd., Seisan Kaihatsu Kagaku KenkyushoInventors: Teruya Shinjo, Hidefumi Yamamoto, Toshio Takada
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Patent number: 5252390Abstract: A laminated film comprising at least two thin films of single crystal LnBa.sub.2 Cu.sub.3 O.sub.7-x wherein Ln is Y or one of lanthanoids except Pr and Tb having the (001) plane in the direction parallel with the film surface and at least one continuous thin film of Y.sub.2 O.sub.3 which has a thickness of not larger than 100 .ANG. and the (001) plane in the direction parallel with the film surface and is interposed between a pair of said thin films of single crystal LnBa.sub.2 Cu.sub.3 O.sub.7-x, wherein the thin films of single crystal LnBa.sub.2 Cu.sub.3 O.sub.7-x has good superconductive properties.Type: GrantFiled: June 28, 1991Date of Patent: October 12, 1993Assignees: Ube Industries, Ltd., Kanegafuchi Chemical Industry Co., Ltd., Nippon Steel Corporation, TDK Corporation, Tosoh Corporation, Toyo Boseki Kabushiki Kaisha, Nippon Mining Co., Ltd., NEC Corporation, Matsushita Electric Industrial Co., Ltd., Seisan Kaihatsu Kagaku KenkyushoInventors: Toshio Takada, Takahito Terashima, Kenji Iijima, Kazunuki Yamamoto, Kazuto Hirata, Yoshichika Bando
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Patent number: 5250657Abstract: Polyarylene thioether is easily prepared by oxidative polymerizing an aromatic compound of the formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group, and Y is a hydrogen atom or a group of the formula: ##STR2## wherein R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are independently a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group and X is --O--, --S--, a methylene group or an ethylene group with a sulfidizing agent in the presence of an acid and an oxidizing agent, or in the presence of an acid, a catalyst for oxidative polymerization and oxygen, or in the presence of a Friedel-Crafts catalyst.Type: GrantFiled: January 29, 1991Date of Patent: October 5, 1993Assignee: Seisan Kaihatsu Kagaku KenkyushoInventors: Eishun Tsuchida, Hiroyuki Nishide, Kimihisa Yamamoto, Mitsutoshi Jikei, Junya Katoh
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Patent number: 5243316Abstract: There is provided a magnetoresistance effect element which is a multilayer structure body wherein a first magnetic film layer made of Ni-rich Ni-Co-Fe having a thickness of 10 to 100 .ANG. and a second magnetic film layer made of Co-rich Co-Ni-Fe having a thickness of 10 to 100 .ANG., which are different from each other in coercive force, are integrally laminated with a non-magnetic metal film layer having a thickness of 10 to 100 .ANG. interposed therebetween. The non-magnetic metal film layer is of a metal, for example, Cu, Ag, Au, Pt, Ru or Re. (Ni.sub.A Co.sub.1-A).sub.B Fe.sub.1-B, Ni.sub.A Fe.sub.1-A or Ni.sub.A Co.sub.1-A is used as a material of the first magnetic film, and (Co.sub.C Ni.sub.1-C).sub.D Fe.sub.1-D is used as a material of the second magnetic film.Type: GrantFiled: January 22, 1992Date of Patent: September 7, 1993Assignees: Matsushita Electric Industrial Co., Ltd., Seisan Kaihatsu Kagaku Kenkyusho, TDK Corporation, Nippon Mining Co., Ltd., NEC Corporation, Ube Industries, Ltd., Kangafuchi Chemical Industry Co., Ltd., Nippon Steel Corporation, Tosoh Corporation, Toyo Boseki Kabushiki KaishaInventors: Hiroshi Sakakima, Mitsuo Satomi, Toshio Takada, Teruya Shinjo
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Patent number: 5229035Abstract: A Bi-Pb-Sr-Ca-Cu-O system superconductor having a composition ofBi.sub.n Pb.sub.m Sr.sub.x Ca.sub.y Cu.sub.2 O.sub..delta.wherein n is a number from 0.76 to 1.05, m is a number from 0.01 to 0.20, x is a number from 0.85 to 1.35 and y is a number larger than 1.00 and not larger than 1.35; or n is a number larger than 1.06 and not larger than 1.15, m is a number from 0.12 to 0.25, x is a number from 1.20 to 1.35 and y is a number from 1.20 to 1.30; or n is a number larger than 0.75 and not larger than 1.15, m is a number from 0.25 to 0.35, x is a number from 1.20 to 1.35 and y is a number from 1.20 to 1.35, when they are normalized with the Cu mole number of 2, which has t.sub.c of at least 110 K.Type: GrantFiled: May 28, 1991Date of Patent: July 20, 1993Assignees: Toda Kogyo Corporation, NEC Corporation, Tosoh Corporation, Osaka Cement Co., Ltd., Kabushiki Kaisha Kobe Seiko Sho, Seisan Kaihatsu Kagaku KenkyushoInventors: Toshio Takada, Mikio Takano, Yoshinari Miura, Jun Takada, Kiichi Oda, Naoichi Yamamoto
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Patent number: 5173475Abstract: A Bi-Pb-Sr-Ba-Ca-Cu-O system superconductor having a composition of:Bi.sub.l Pb.sub.m Sr.sub.p Ba.sub.q Ca.sub.y Cu.sub.z O.sub.xwherein l, m, p, q, y and z satisfy the following inequalities:0.50<l<1.500.01.ltoreq.m.ltoreq.0.600.70.ltoreq.p.ltoreq.1.600.005.ltoreq.q.ltoreq.0.800.70.ltoreq.y.ltoreq.1.601.40.ltoreq.z.ltoreq.3.00which has the critical temperature of at least 77 K, and contains the high T.sub.c phase in a high fraction.Type: GrantFiled: June 29, 1989Date of Patent: December 22, 1992Assignees: Kabushiki Kaisha Kobe Seiko Sho, NEC Corporation, Osaka Cement Co., Ltd., Seisan Kaihatsu Kagaku Kenkyusho, Toda Kogyo Corp., Tosoh CorporationInventors: Toshio Takada, Mikio Takano, Yoshinari Miura, Jun Takada, Kiichi Oda, Naoichi Yamamoto
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Patent number: 5061687Abstract: A laminated film comprising a thin film of single crystal YBa.sub.2 Cu.sub.3 O.sub.7-x having the (001) plane in the direction parallel with the film surface and a continuous insulating ultrathin layer of MgO which is formed on said superconductor film and has a thickness of not larger than 10.ANG. and the (001) plane in a direction parallel with the film surface is provided.Type: GrantFiled: November 29, 1989Date of Patent: October 29, 1991Assignees: Ube Industries, Ltd., Kanegafuchi Chemical Industry Co., Ltd., Nippon Steel Corporation, TDK Corporation, Tosoh Corporation, Toyo Boseki Kabushiki Kaisha, Nippon Mining Co., Ltd., NEC Corporation, Matsushita Electric Industrial Co., Ltd., Seisan Kaihatsu Kagaku KenkyushoInventors: Toshio Takada, Takahito Terashima, Kenji Iijima, Kazunuki Yamamoto, Kazuto Hirata
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Patent number: 5001018Abstract: An Fe-Co base magnetic material comprising periodically laminated structure which consists of an Fe layer which has the bcc (110) plane in the lamination plane, an Fe-Co alloy layer which has the bcc (110) plane in the lamination plane and is laminated on said Fe layer and a Co layer which has the hcp (101) plane in the lamination plane and is laminated on said Fe-Co alloy layer, which laminated structure has controlled magnetostriction.Type: GrantFiled: September 29, 1989Date of Patent: March 19, 1991Assignees: Kanegafuchi Chemical Industry Co., Ltd., TDK Corporation, Nippon Mining Co., Ltd., NEC Corporation, Seisan Kaihatsu Kagaku KenkyushoInventors: Toshio Takada, Tetsuo Okuyama, Kenichi Yoden, Teruya Shinjo
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Patent number: 4118314Abstract: Apparatus for the treatment of dialysate for the hemodialyzer in which apparatus the dialysate is recirculated and urea and other toxins in the dialysate are removed by repeated adsorption on and desorption from an adsorbent packed in a plurality of adsorbent beds that are used alternately or in rotation. Valves controlling flows of recirculating dialysate and the liquid (water and fresh dialysate) for desorption to and from said adsorbent beds are operated automatically with use of a timing device.Type: GrantFiled: May 19, 1975Date of Patent: October 3, 1978Assignee: Seisan Kaihatsu Kagaku KenkyushoInventor: Fumitake Yoshida
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Patent number: 3998593Abstract: A membrane blood oxygenator-blood heat exchanger combination including a gas exchange section of multi-layer structure having alternate layers of rectangular polymer membranes and rectangular mesh spacers forming alternate gas channels and gas exchange blood channels between the membranes, said gas and blood channels being generally perpendicular to each other; a heat exchange section having a multi-layer structure having alternate layers of metal sheets and rectangular mesh spacers forming alternate heat exchange blood channels and water channels, said blood and water channels being perpendicular to each other, said heat exchange blood channels being an extension of the gas exchange blood channels and having equal blood flow sectional area to said gas exchange blood channels.Type: GrantFiled: February 11, 1976Date of Patent: December 21, 1976Assignee: Seisan Kaihatsu Kagaku KenkyushoInventors: Fumitake Yoshida, Shigeo Kato
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Patent number: 3955012Abstract: Medical articles composed of silicone rubber coated with collagen to be used in living body, are manufactured by subjecting a surface of shaped articles composed of silicone rubber to a spark discharge, coating the thus treated surface with an acidic aqueous solution of collagen and then drying said surface to form collagen layer and irradiating the shaped article coated with collagen with high energy ionizing radiation under an atmosphere having such a humidity that the water content of the coated collagen becomes more than 20% by weight.Type: GrantFiled: November 16, 1973Date of Patent: May 4, 1976Assignee: Zaidan Hojin, Seisan Kaihatsu Kagaku KenkyushoInventors: Seizo Okamura, Tsunetoshi Hino