Patents by Inventor Nobuyuki Shibata
Nobuyuki Shibata 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: 6778337Abstract: An optical attenuator (8) has a substrate (glass substrate) (1) and an optical attenuation film (2) that attenuates an input light with a predetermined optical attenuation factor, and the optical attenuation film (2) is disposed on a light input face (3) of the substrate (1). An angle defined by the light input face (3) and the light output face (4) of the substrate (1) is set to 0.15° to 0.5°. A protective film (5) for preventing the deterioration of the optical attenuation film (2) is formed on a surface of the optical attenuation film (2).Type: GrantFiled: November 30, 2001Date of Patent: August 17, 2004Assignee: The Furukawa Electric Co., Ltd.Inventors: Takuma Aoki, Kouki Sato, Nobuyuki Shibata, Toshimitsu Nishiwaki, Mizuki Oike
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Patent number: 6615047Abstract: A cell group is formed from three cells, each of which has a site equipped with antennas. The antennas differ from one another in terms of horizontal orientation and cover all horizontal directions. The cell groups are arranged in a repeating pattern such that a cell having a site assigned different frequency is interposed between cell groups assigned the same frequency, thereby constituting a minimum unit area to be repeated.Type: GrantFiled: April 8, 1999Date of Patent: September 2, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kousuke Yasooka, Yoshiyuki Chatani, Nobuyuki Shibata
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Publication number: 20020085285Abstract: An optical attenuator (8) has a substrate (glass substrate) (1) and an optical attenuation film (2) that attenuates an input light with a predetermined optical attenuation factor, and the optical attenuation film (2) is disposed on a light input face (3) of the substrate (1). An angle defined by the light input face (3) and the light output face (4) of the substrate (1) is set to 0.15° to 0.5°. A protective film (5) for preventing the deterioration of the optical attenuation film (2) is formed on a surface of the optical attenuation film (2).Type: ApplicationFiled: November 30, 2001Publication date: July 4, 2002Inventors: Takuma Aoki, Kouki Sato, Nobuyuki Shibata, Toshimitsu Nishiwaki, Mizuki Oikea
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Patent number: 5478570Abstract: The present invention provides a process for producing a capsule containing a substance which is liable to acid, water or heat, comprising: suspending a substance which is liable to acid, water or heat in a hydrophobic substance which is non-flowable at ambient temperature; encapsulating the resulting suspension; air-drying the resulting capsule at ambient temperature; and vacuum drying or vacuum freeze-drying the air-dried capsule. A capsule obtained by the process is also disclosed.Type: GrantFiled: July 7, 1994Date of Patent: December 26, 1995Assignee: Morishita Jintan Co., Ltd.Inventors: Hideki Sunohara, Tohru Ohno, Nobuyuki Shibata, Keisuke Seki
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Patent number: 5394606Abstract: An apparatus for assembling and inspecting optical fibers and a connector which attaches the connector to at least one cord end of a plurality of optical fibers and inspects connection loss etc. due to connection of the connector. A process of connecting the connector to the cord ends where the connector is assembled which is linked to a process of processing the other cord ends and then inspecting connection loss etc. of the optical fibers due to a connection of the connector.Type: GrantFiled: August 30, 1993Date of Patent: March 7, 1995Assignee: The Furukawa Electric Co., Ltd.Inventors: Isamu Kinoshita, Kenji Suzuki, Nobuyuki Shibata, Toshimitsu Nishiwaki
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Patent number: 5347698Abstract: Disclosed a method of assembly and inspection of optical fiber connectors which attaches connectors to at least one cord end of a plurality of optical fiber cords in which single or multiple optical fibers are accommodated and inspects connection loss etc. due to connection of the connectors.A process of connecting the connectors to cord ends where the connectors are assembled is linked to a process of processing the other cord ends and then inspecting connection loss etc. of the optical fibers due to a connection of the connectors.Type: GrantFiled: July 13, 1992Date of Patent: September 20, 1994Assignee: The Furukawa Electric Co., Ltd.Inventors: Isamu Kinoshita, Kenji Suzuki, Nobuyuki Shibata, Toshimitsu Nishiwaki
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Patent number: 5338618Abstract: An electric contact material containing Li oxide of 0.01 to 2.0% by weight when represented in terms of the amount of Li, oxide of at least one rare earth element of 0.05 to 0.18% by weight when represented in terms of the amount of the rare earth element, and Ag or Ag alloy as the remaining portion; an electric contact material containing Li oxide of 0.01 to 2.0% by weight when represented in terms of the amount of Li, at least one rare earth element of 0.05 to 0.18% by weight when represented in terms of the amount of the rare earth element, at least one element selected from a group consisting of In, Sn, Zn, Mn, Pd, Sb, Cu, Mg, Pb, Cd, Cr and Bi by an amount of 0.1 to 1.0% by weight (however, in the case of Zn and Mn, the amount is set less than 0.5% by weight), and/or at least one element selected from a group consisting of Fe, Ni and Co by an amount of 0.03 to 0.6% by weight, and Ag as the remaining portion; and an electric contact formed by using the above material.Type: GrantFiled: September 25, 1992Date of Patent: August 16, 1994Assignees: The Furukawa Electric Co., Ltd., Mabuchi Motor Kabushiki KaishaInventors: Satoshi Suzuki, Nobuyuki Shibata, Ryotomo Shirakawa, Akira Matsuda
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Patent number: 5251279Abstract: An optical connector which comprises a ferrule 9, provided on the distal end of an optical fiber cord having a jacketed optical fiber 1 covered by a sheath 3 with a tension member 2 in between, and a stop ring 7 whose distal end position is regulated by the ferrule 9. A resin boot 11 for integrally fixing the respective distal ends of the tension member 2 and the sheath 3 is provided on the rear half of the stop ring 7 by molding.Type: GrantFiled: February 13, 1992Date of Patent: October 5, 1993Assignee: The Furukawa Electric Co., Ltd.Inventors: Nobuyuki Shibata, Kenji Suzuki, Ren-ichi Yuguchi
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Patent number: 5171643Abstract: An electric contact material comprising 0.01 to 2.0 weight % of Li, 0.01 weight % or more to less than 0.2 weight % of at least one rare earth metal and the remainder being Ag. The electric contact material may further comprise 0.1 to 1.0 weight % of at least one element selected from a group consisting of In, Sn, Zn, Mn, Pd, Sb, Cu, Mg, Pb, Cd, Cr and Bi, however, for Zn and Mn, the amount is less than 0.5 % by weight; and/or 0.03 to 0.6 weight % of at least one element selected from a group consisting of Fe, Ni and Co. The electric contact material is excellent in arc resistance, wear resistance and lubricity in a small current region and is suitable as a material for a slide contact and a rotary slide contact.Type: GrantFiled: July 23, 1990Date of Patent: December 15, 1992Assignees: The Furukawa Electric Co., Ltd., Mabuchi Motor Kabushiki KaishaInventors: Satoshi Suzuki, Nobuyuki Shibata, Ryotomo Shirakawa, Akira Matsuda
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Patent number: 5142601Abstract: An optical connector comprises an optical fiber cable including a nylon-coated fiber, a tension member thereon, a sheath covering the nylon-coated fiber and the tension member, a ferrule provided at the distal end of the optical fiber cable so as to be attached to the distal end of the nylon-coated fiber, and a holder having a distal end restricted in position by the ferrule when mounted on the nylon-coated fiber. The optical connector is constructed so that the holder is mounted on the nylon-coated fiber by after-attachment. A method for assembling the optical connector comprises providing an urging spring fitted on the nylon-coated fiber so as to be interposed between the ferrule and the holder so as to urge the ferrule forward, and providing a gripper attached to the rear portion of the holder.Type: GrantFiled: June 18, 1991Date of Patent: August 25, 1992Assignee: The Furukawa Electric Co., Ltd.Inventors: Nobuyuki Shibata, Kenji Suzuki, Ren-ichi Yuguchi
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Patent number: 4898318Abstract: An improved copper radiator for motor cars comprising a plurality of tubes adapted for the flow of a heat-exchanging medium therethrough, fins bonded directly with solder to said tubes to form a copper core and wherein said core is bonded with solder to at least one seat plate, the improvement in that the surface of the fins of said copper radiator has an oxidized layer of a thickness of not more than 1200 .ANG..Type: GrantFiled: April 4, 1988Date of Patent: February 6, 1990Assignees: The Furukawa Electric Co., Ltd., Nippondenso Co., Ltd.Inventors: Syoji Shiga, Akira Matsuda, Nobuyuki Shibata, Kiichi Akasaka
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Patent number: 4892141Abstract: A fin is provided, wherein a Cu-Zn diffused alloy layer with a Zn content of not less than 1 wt % is formed on at least a portion of the surface of Cu-based substrate for a fin. For the formation of such a Cu-Zn diffused alloy layer, Zn is allowed to diffuse thermally after covered the surface of Cu-based substrate with Zn or Zn alloy, and a rolling processing is carried out after the thermal diffusion to finish to a desired size. The Zn concentration of the fin decreases continuously from the outside surface of the Cu-Zn diffused layer to the interface between that layer and the Cu-based fin substrate.Type: GrantFiled: June 27, 1989Date of Patent: January 9, 1990Assignee: The Furukawa Electric Co., Ltd.Inventors: Shoji Shiga, Akira Matsuda, Hideo Suda, Nobuyuki Shibata
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Patent number: 4775004Abstract: An improved copper radiator for motor cars comprising a plurality of tubes adapted for the flow of a heat-exchanging medium therethrough, fins bonded directly with solder to said tubes to form a copper core and wherein said core is bonded with solder to at least one seat plate, the improvement in that the surface of the fins of said copper radiator has an oxidized layer of a thickness of not more than 1200 .ANG..Type: GrantFiled: September 5, 1986Date of Patent: October 4, 1988Assignees: The Furukawa Electric Co., Ltd., Nippondenso Co., Ltd.Inventors: Syoji Shiga, Akira Matsuda, Nobuyuki Shibata, Kiichi Akasaka