Patents by Inventor Osamu Kohno
Osamu Kohno 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: 10607773Abstract: When a powder material (5) is molded by introducing the material into a cavity (11) between a lower punch (2) and a die (1), compression molding the material between upper and lower punches (3 and 2) into a compact (51) of desired shape, and moving up the lower punch (2) to eject the compact (51), a lubricant is applied to the interior surface of the die (1) by fitting a pad (24) around the lower punch (2) and impregnating the pad with the lubricant. Since the lubricant is applied on every molding operation, molding operation can be continuously carried out.Type: GrantFiled: March 2, 2016Date of Patent: March 31, 2020Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Osamu Kohno, Yoshihiro Umebayashi, Ryuji Nakamura, Takahiro Hashimoto
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Publication number: 20200066440Abstract: When a powder material (5) is molded by introducing the material into a cavity (11) between a lower punch (2) and a die (1), compression molding the material between upper and lower punches (3 and 2) into a compact (51) of desired shape, and moving up the lower punch (2) to eject the compact (51), a lubricant is applied to the interior surface of the die (1) by fitting a pad (24) around the lower punch (2) and impregnating the pad with the lubricant. Since the lubricant is applied on every molding operation, molding operation can be continuously carried out.Type: ApplicationFiled: October 29, 2019Publication date: February 27, 2020Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Osamu Kohno, Yoshihiro Umebayashi, Ryuji Nakamura, Takahiro Hashimoto
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Patent number: 10541082Abstract: When a powder material (5) is molded by introducing the material into a cavity (11) between a lower punch (2) and a die (1), compression molding the material between upper and lower punches (3 and 2) into a compact (51) of desired shape, and moving up the lower punch (2) to eject the compact (51), a lubricant is applied to the interior surface of the die (1) by fitting a pad (24) around the lower punch (2) and impregnating the pad with the lubricant. Since the lubricant is applied on every molding operation, molding operation can be continuously carried out.Type: GrantFiled: March 2, 2016Date of Patent: January 21, 2020Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Osamu Kohno, Yoshihiro Umebayashi, Ryuji Nakamura, Takahiro Hashimoto
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Patent number: 9711280Abstract: A rare earth sintered magnet is prepared from a corresponding alloy powder, using a mold comprising a die, an upper punch, and a lower punch which is divided into a plurality of punch segments which are independently movable within the die. The method comprises the steps of filling the mold cavity with the alloy powder when one or more selected punch segments are moved to a higher position than the remaining punch segments; moving the selected punch segments down to the position where the selected and remaining punch segments assume the normal shape of the lower punch during the compression step; compressing the alloy powder between the upper and lower punches under a magnetic field while the normal shape of the lower punch is maintained, for thereby molding a compact; and heat treating the compact.Type: GrantFiled: April 3, 2015Date of Patent: July 18, 2017Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Eiji Uesaka, Osamu Kohno, Kenji Imamura, Yoshihiro Umebayashi, Takahiro Hashimoto
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Publication number: 20160260542Abstract: When a powder material (5) is molded by introducing the material into a cavity (11) between a lower punch (2) and a die (1), compression molding the material between upper and lower punches (3 and 2) into a compact (51) of desired shape, and moving up the lower punch (2) to eject the compact (51), a lubricant is applied to the interior surface of the die (1) by fitting a pad (24) around the lower punch (2) and impregnating the pad with the lubricant. Since the lubricant is applied on every molding operation, molding operation can be continuously carried out.Type: ApplicationFiled: March 2, 2016Publication date: September 8, 2016Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Osamu Kohno, Yoshihiro Umebayashi, Ryuji Nakamura, Takahiro Hashimoto
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Publication number: 20150294788Abstract: A rare earth sintered magnet is prepared from a corresponding alloy powder, using a mold comprising a die, an upper punch, and a lower punch which is divided into a plurality of punch segments which are independently movable within the die. The method comprises the steps of filling the mold cavity with the alloy powder when one or more selected punch segments are moved to a higher position than the remaining punch segments; moving the selected punch segments down to the position where the selected and remaining punch segments assume the normal shape of the lower punch during the compression step; compressing the alloy powder between the upper and lower punches under a magnetic field while the normal shape of the lower punch is maintained, for thereby molding a compact; and heat treating the compact.Type: ApplicationFiled: April 3, 2015Publication date: October 15, 2015Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Eiji Uesaka, Osamu Kohno, Kenji Imamura, Yoshihiro Umebayashi, Takahiro Hashimoto
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Patent number: 5908507Abstract: A chemical vapor deposition (CVD) reactor for forming a film at the surface of a base material, and a production method for an oxide superconductive conductor using this CVD reactor, are disclosed. The CVD reactor is provided with a processing chamber, a material gas supply mechanism which supplies material gas into the processing chamber, and a gas exhaust mechanism which vents gas from inside the processing chamber. The processing chamber is divided by partitions into a base material introduction section, a reaction chamber, and a base material guide-out section. A base material transit opening is formed in each partition, and a base material conveyance region is formed inside the reaction chamber passing through the base material introduction section, the reaction chamber and the base material guide-out section. The material gas supply mechanism is provided with a material gas supply source and a gas disperser and is connected to the material gas supply source.Type: GrantFiled: July 7, 1997Date of Patent: June 1, 1999Assignees: Fujikura Ltd., Chubu Electric Power Company Inc.Inventors: Kazunori Onabe, Nobuyuki Sadakata, Takashi Saito, Osamu Kohno, Taichi Yamaguchi, Yasuhiro Iijima, Shigeo Nagaya, Naoki Hirano
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Patent number: 5357577Abstract: A microphone apparatus including a vacuum-tube amplifier amplifying an electric signal converted from an acoustic signal includes a thermo-ionic cooling element having two surfaces, in which a first surface is in contact with the vacuum-tube amplifier for absorbing the heat generated from the vacuum-tube amplifier and the absorbed heat is radiated to the exterior from the second surface.Type: GrantFiled: September 28, 1992Date of Patent: October 18, 1994Assignee: Sony CorporationInventors: Tomohiro Waji, Kazumasa Takahashi, Satoshi Yamazaki, Kiichi Yoshida, Osamu Kohno, Tohru Enokuma, Eiichi Tanaka
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Patent number: 5283232Abstract: A method for producing an oxide superconducting composite wire is disclosed, which comprises the steps of: (a) molding a powdered oxide superconductor material to form a wire; (b) heat treating the wire in an oxygen atmosphere thereby forming the wire into an oxide superconducting member; (c) forming a non-oxidizing metal intermediate layer on a surface of the oxide superconducting member; (d) bundling a plurality of the oxide superconducting members containing the intermediate layer; (e) inserting the bundled oxide superconducting members into an oxidizing metal support tube; and (f) drawing the product of step (e) to reduce its diameter and heat-treating it.Type: GrantFiled: August 20, 1992Date of Patent: February 1, 1994Assignee: Fujikura Ltd.Inventors: Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Masaru Sugimoto, Mikio Nakagawa
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Patent number: 5168127Abstract: A method of producing an oxide superconducting wire. A non-oxidizing metal layer is formed between an oxide superconducting material and an oxidizing metal support in order to prevent oxygen from being taken away from the oxide superconducting material by the oxidizing metal support during a subsequent heat treatment for producing an oxide superconductor to thereby obtaining a wire composite. The wire composite is then heated to produce the oxide superconductor.Type: GrantFiled: February 6, 1992Date of Patent: December 1, 1992Assignee: Fujikura Ltd.Inventors: Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Masaru Sugimoto, Mikio Nakagawa
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Patent number: 5108986Abstract: The invention relates to a superconductor manufacturing method and a superconductor manufactured by the method. More particularly, the invention is concerned wih an oxide superconductor of lamellar perovskite type and a method of manufacturing the same having extemely high critical temperature and critical current density as compared with conventional alloy superconductors or intermetallic compound superconductos. The superconductor is expressed byA-B-Cu-OwhereA represents at least one of elements of the group IIIa in the periodic table; andB represents at least one of elements of the group IIa in the periodic table,wherein at least one A and B consists of two elements belonging to the same group.Type: GrantFiled: August 13, 1990Date of Patent: April 28, 1992Assignee: Fujikura Ltd.Inventors: Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Masaru Sugimoto, Mikio Nakagawa, Shin'ya Aoki
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Patent number: 5045527Abstract: A method of producing a superconductor including a superconductive oxide. At least one material is pressed for forming a filling material, the at least one material being selected from the group consisting of a starting material powder of the superconductive oxide, a powder of the superconductive oxide and a compact made of the starting material powder and/or the superconductive oxide powder, for forming a filling material. The filling material is charged into a metallic pipe to form a preform. The preform is moved along an axis thereof. During moving, the preform is swaged perpendicularly to the axis thereof to form a composite having a metallic sheath, made of the metallic pipe, and a core sheathed with the metallic sheath. The core of the composite is heated for producing the superconductive oxide.Type: GrantFiled: October 3, 1988Date of Patent: September 3, 1991Assignee: Fujikura Ltd.Inventors: Yoshimitsu Ikeno, Osamu Kohno, Kenji Goto, Atsushi Kume, Shin'ya Aoki, Nobuyuki Sadakata, Masaru Sugimoto, Toshio Usui, Mikio Nakagawa, Taichi Yamaguchi
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Patent number: 4965245Abstract: A method of producing a superconducting cable or a coil including an A-B-C-D system superconductor where the A includes an element of group IIIa of the Periodic Table, the B an element of group IIa of the Periodic Table, C copper, D oxygen.Type: GrantFiled: July 15, 1988Date of Patent: October 23, 1990Assignee: Fujikura Ltd.Inventors: Masaru Sugimoto, Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Mikio Nakagawa, Shin'ya Aoki, Masayuki Tan, Ryuichi Okiai, Syotaro Yoshida, Masakazu Hasegawa, Hiroshi Yamanouchi
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Patent number: 4885273Abstract: A method of producing a superconducting wire including A-B-C-D system oxide superconductor wherein A is an at least one element of group IIIa of the Periodic Table, B is an at least one alkali earth metal, C includes Cu and D includes O. In the method, a material containing at least one of both A and B is arranged inside or outside an elongated tubular coating layer, which includes a copper alloy and at least the other one, to form a composite element. Then, the composite element undergoes a heat treatment to produce the superconductor.Type: GrantFiled: March 18, 1988Date of Patent: December 5, 1989Assignee: Fujikura Ltd.Inventors: Mamoru Sugimoto, Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Shin'ya Aoki, Mikio Nakagawa
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Patent number: 4665611Abstract: A method of fabricating a superconductive electrical conductor of Nb.sub.3 Sn type comprises a step of covering an elongated core member made of Nb with a covering member made of a third element selected from the group consisting of Ti, Ta, In, Hf, Al and Si. The core member covered with the covering member is covered with a tubular matrix made of a Cu-Sn alloy or a combination of Cu with Sn to form a composite wire element. Such wire elements are assembled in a tubular matrix made of a Cu-Sn alloy, Cu or a combination of Cu with Sn and reduced in diameter to form a multi-core composite wire element having a desired diameter. The assembling and reducing processing is effected at least one to form a multi-core composite wire which is then subjected to a diffusion heat-treatment to form an intermetallic compound of Nb.sub.3 Sn and the third element in the peripheral portion of the core member.Type: GrantFiled: February 19, 1986Date of Patent: May 19, 1987Assignee: Fujikura Ltd.Inventors: Nobuyuki Sadakata, Yoshimitsu Ikeno, Masaru Sugimoto, Osamu Kohno
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Patent number: 4578972Abstract: A wire drawing apparatus includes a carriage movable along an elongated frame. A chuck is mounted on the frame for holding one end of a wire, and a drawing die is mounted on the carriage for passing the wire therethrough. An actuating device is connected to the carriage for moving it along the frame to move the die along the wire so as to reduce the cross-section of the wire. A plurality of clamp devices are mounted on the frame and spaced along the length thereof for holding the wire. A plurality of drive devices are operatively connected respectively to the clamp devices to move them into and out of an operative position in a path of travel of the carriage where the clamp devices engage the wire.Type: GrantFiled: June 7, 1984Date of Patent: April 1, 1986Assignee: Fujikura Ltd.Inventors: Shigeo Shihyakugari, Osamu Kohno, Yoshimitsu Ikeno
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Patent number: 4568900Abstract: A forced-cooled superconductor wherein a plurality of superconducting wires are placed within a hollow stabilizer of substantially rectangular section; and a first passage for passing a coolant is longitudinally formed between the stabilizer and a casing encasing the stabilizer, the stabilizer having a plurality of second passages formed therethrough for flowing the coolant from the first passage to the inside of the stabilizer so that the coolant flows through the second passages into the space defined between the superconducting wires for direct cooling. The stabilizer includes a pair of channel members opposedly fitted together to form into a substantially rectangular tube.Type: GrantFiled: November 14, 1983Date of Patent: February 4, 1986Assignees: Agency of Industrial Science and Technology, Fujikura, Ltd.Inventors: Ko Agatsuma, Katsuyuki Kaiho, Kenichi Koyama, Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Shigeo Shihyakugari, Tetsuo Yamaguchi
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Patent number: 4377905Abstract: A method for manufacturing a Nb.sub.3 Sn superconductor comprising the steps of preparing a composite conductor element which is composed of Cu-Sn alloy matrix and one or more Nb cores inserted and disposed in said matrix, if necessary sheathing the outer surface of the Cu-Sn alloy matrix with copper, subjecting the composite conductor element to a diameter reducing working until the predetermined diameter is reached, then forming an Sn-plating layer on the outer surface of the reduced diameter composite conductor element and thereafter subjecting the Sn-plated composite conductor element to diffusion heat treatment so that an intermetallic compound of Nb.sub.Type: GrantFiled: February 20, 1981Date of Patent: March 29, 1983Assignees: Agency of Industrial Science and Technology, Fujikura Cable Works, Ltd.Inventors: Koh Agatsuma, Kenichi Koyama, Itaru Todoriki, Osamu Kohno, Takashi Saito
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Patent number: 4161062Abstract: A method for producing hollow superconducting cable comprises steps of providing grooves on the outer periphery of a hollow conductor adapted to be engageable therewithin fine multi-filamentary superconductors formed beforehand to be fitted into said grooves, and of fixing securely said multi-filamentary superconductors into said grooves by soldering with a metal having a low melting point.Type: GrantFiled: October 26, 1977Date of Patent: July 17, 1979Assignees: Agency of Industrial Science and Technology, The Fujikura Cable Works, Ltd.Inventors: Ko Agatsuma, Kenichi Koyama, Itaru Todoriki, Tetsuo Yamaguchi, Osamu Kohno, Takashi Saito