Patents by Inventor Yoshinobu Takano
Yoshinobu Takano 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: 9304251Abstract: To provide a plastic optical fiber using amorphous fluorinated polymers whereby transmission loss and bending loss are low, no cracking takes place during stretching, and a wide range of molding conditions is acceptable.Type: GrantFiled: March 3, 2015Date of Patent: April 5, 2016Assignee: Asahi Glass Company, LimitedInventors: Toshiyuki Tanaka, Nobuyuki Kasahara, Masakuni Sato, Hiroshi Yamamoto, Susumu Saito, Tetsuji Shimohira, Yoshinobu Takano, Naoto Ota
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Patent number: 9260780Abstract: This is a thin film forming apparatus which is equipped with a target constructed of a thin film material, a cathode for generating a particulate thin film material from the target, a supporting member for supporting the substrate on which the particulate thin film material is to be deposited, a heater for heating the substrate, and a guide for introducing the particulate thin film material onto a surface of the substrate where the thin film material is deposited, wherein the supporting member supports the substrate so as to expose the first principal surface and its backside (second principal surface) of the substrate, the target is disposed in a position for producing the particulate thin film material in an extension of the first principal surface of the substrate, and the guide is disposed on the first principal surface and the second principal surface of the substrate.Type: GrantFiled: March 26, 2004Date of Patent: February 16, 2016Assignee: TOHOKU SEIKI INDUSTRIES, LTD.Inventors: Masanobu Kusunoki, Keitaro Harada, Masayoshi Yokoo, Yoshinobu Takano
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Publication number: 20150177456Abstract: To provide a plastic optical fiber using amorphous fluorinated polymers whereby transmission loss and bending loss are low, no cracking takes place during stretching, and a wide range of molding conditions is acceptable.Type: ApplicationFiled: March 3, 2015Publication date: June 25, 2015Applicant: Asahi Glass Company, LimitedInventors: Toshiyuki Tanaka, Nobuyuki Kasahara, Masakuni Sato, Hiroshi Yamamoto, Susumu Saito, Tetsuji Shimohira, Yoshinobu Takano, Naoto Ota
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Patent number: 8597479Abstract: A magnetron sputtering system generates a high density plasma on a target by applying magnetic fields intersecting an electric field by using a plurality of magnets that are rotatably supported. The respective magnets are revolved and rotated so that the time variation of regions where a magnetic field (line of magnetic force) generated by the each magnet is orthogonal to an electric field is prevented from becoming monotonous. Further, the respective magnets are arranged to make the distances between the center of rotation and the center of revolution of the respective magnets different from each other, so that the regions where the magnetic field (line of magnetic force) generated by the each magnet is orthogonal to the electric field are dispersed in the radial direction of a target.Type: GrantFiled: February 8, 2005Date of Patent: December 3, 2013Assignee: Tohoku Seiki Industries, Ltd.Inventors: Keitaro Harada, Masayoshi Yokoo, Norikazu Kainuma, Yoshinobu Takano, Isao Tanikawa
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Patent number: 8591706Abstract: A sputtering system for depositing a thin film on the surface of a disc substrate in which high precision positioning of an inner mask and an outer mask is facilitated. The sputtering system has a mask member placed on the surface of the substrate mounted on a substrate holder to cover a partial region on the surface of the substrate. A thin film is deposited by sputtering in a region on the surface of the substrate not covered by the mask member. A section for carrying in and carrying out the substrate has mechanically holds and releases the substrate holder mounting the substrate, and mechanically holds and releases the mask member.Type: GrantFiled: March 28, 2006Date of Patent: November 26, 2013Assignee: Tohoku Seiki Industries, Ltd.Inventors: Masayoshi Yokoo, Isao Tanikawa, Norikazu Kainuma, Yoshinobu Takano
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Publication number: 20130280855Abstract: To obtain high-quality chalcopyrite particles having a small particle size using a relatively inexpensive raw material in a simple and easy process in which complicated equipment (such as vacuum equipment) is not necessary. Provided is a method for producing a compound having a chalcopyrite structure represented by a compositional formula: ABC2, the method including: a step of dissolving a Group 11 element A, a Group 13 element B, and a Group 16 element C of the periodic table in a solvent to prepare a solution; and a step of contacting the solution with a reducing agent.Type: ApplicationFiled: December 28, 2010Publication date: October 24, 2013Applicant: TOHOKU SEIKI INDUSTRIES, CO., LTD.Inventors: Koji Moriya, Jiro Nagaoka, Yoshinobu Takano, Yuuki Sano, Keitaro Harada, Masayoshi Yokoo
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Publication number: 20100006422Abstract: A sputtering system for depositing a thin film on the surface of a disc substrate in which high precision positioning of an inner mask and an outer mask is facilitated. The sputtering system has a mask member placed on the surface of the substrate mounted on a substrate holder to cover a partial region on the surface of the substrate. A thin film is deposited by sputtering in a region on the surface of the substrate not covered by the mask member. A section for carrying in and carrying out the substrate has mechanically holds and releases the substrate holder mounting the substrate, and mechanically holds and releases the mask member.Type: ApplicationFiled: March 28, 2006Publication date: January 14, 2010Inventors: Masayoshi Yokoo, Isao Tanikawa, Norikazu Kainuma, Yoshinobu Takano
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Publication number: 20090026073Abstract: A plurality of magnets are rotatably supported and when a ratio between revolution angle and rotation angle per unit time is set to 1:R, R is set to a value which is not less than 1 and not more than 5, and is not a common divisor of 360, so that the time variation of regions where a magnetic field (line of magnetic force) generated by the each magnet is orthogonal to an electric field is prevented from becoming monotonous. Further, the respective magnets are arranged to make the distances between the center of rotation and the center of revolution of the respective magnets different from each other, so that the regions where the magnetic field (line of magnetic force) generated by the each magnet is orthogonal to the electric field are dispersed in the radial direction of a target.Type: ApplicationFiled: February 8, 2005Publication date: January 29, 2009Inventors: Keitaro Harada, Masayoshi Yokoo, Norikazu Kainuma, Yoshinobu Takano, Isao Tanikawa
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Publication number: 20080076269Abstract: This is a thin film forming apparatus which is equipped with a target constructed of a thin film material, a cathode for generating a particulate thin film material from the target, a supporting member for supporting the substrate on which the particulate thin film material is to be deposited, a heater for heating the substrate, and a guide for introducing the particulate thin film material onto a surface of the substrate where the thin film material is deposited, wherein the supporting member supports the substrate so as to expose the first principal surface and its backside (second principal surface) of the substrate, the target is disposed in a position for producing the particulate thin film material in an extension of the first principal surface of the substrate, and the guide is disposed on the first principal surface and the second principal surface of the substrate.Type: ApplicationFiled: March 26, 2004Publication date: March 27, 2008Inventors: Masanobu Kusunoki, Keitaro Harada, Masayoshi Yokoo, Yoshinobu Takano
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Patent number: 6985666Abstract: A method for coupling plastic optical fibers and a plastic optical fiber unit are provided by providing a holder, which includes a groove for holding plastic optical fibers in a longitudinal direction; and abutting and coupling opposed end faces of the plastic optical fibers together while causing the holder to apply a lateral pressure to the plastic optical fibers therein to sandwich the plastic optical fibers.Type: GrantFiled: February 14, 2002Date of Patent: January 10, 2006Assignee: Asahi Glass Company, LimitedInventor: Yoshinobu Takano
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Publication number: 20040247265Abstract: A branching method for an optical fiber cable containing a plurality of plastic optical fibers, which comprises cutting a desired optical fiber in the cable without cutting the cable in its entirety, at a non-terminal position of the cable, to form a terminal of the fiber.Type: ApplicationFiled: July 16, 2004Publication date: December 9, 2004Applicant: ASAHI GLASS COMPANY, LTD.Inventors: Yoshinobu Takano, Yuji Watanabe
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Patent number: 6829420Abstract: To provide an optical fiber cable having a plurality of GI-POFs and a resin cable body confining these, and excellent in the thermal durability, pressure resisting property and flexural mechanical property, wherein the increase of the attenuation of the light is suppressed. The resin cable body has as many holes as the number of the GI-POFs, extending longitudinally therethrough, and the GI-POFs are distributed and arranged one by one in the holes so that they are freely movable in two directions perpendicular to the longitudinal direction.Type: GrantFiled: December 6, 2002Date of Patent: December 7, 2004Assignee: Asahi Glass Company, LimitedInventors: Yoshitaka Matsuyama, Seigo Kotera, Yoshinobu Takano
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Publication number: 20040218851Abstract: Even in a case of not employing a focusing lens combined with a light source, or in a case of using visible light or using infrared light in a short communication distances high quality optical communication can be performed without having unnecessary propagation light propagating in the protection coating.Type: ApplicationFiled: May 28, 2004Publication date: November 4, 2004Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Kozo Izumitani, Hiroyuki Sanada, Masatake Ueno, Yuji Watanabe, Yoshinobu Takano, Yoshitaka Matsuyama
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Publication number: 20030118298Abstract: To provide an optical fiber cable having a plurality of GI-POFs and a resin cable body confining these, and excellent in the thermal durability, pressure resisting property and flexural mechanical property, wherein the increase of the attenuation of the light is suppressed. The resin cable body has as many holes as the number of the GI-POFs, extending longitudinally therethrough, and the GI-POFs are distributed and arranged one by one in the holes so that they are freely movable in two directions perpendicular to the longitudinal direction.Type: ApplicationFiled: December 6, 2002Publication date: June 26, 2003Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Yoshitaka Matsuyama, Seigo Kotera, Yoshinobu Takano
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Publication number: 20020057878Abstract: A branching method for an optical fiber cable containing a plurality of plastic optical fibers, which comprises cutting a desired optical fiber in the cable without cutting the cable in its entirety, at a non-terminal position of the cable, to form a terminal of the fiber.Type: ApplicationFiled: November 15, 2001Publication date: May 16, 2002Applicant: Asahi Glass Company, LimitedInventors: Yoshinobu Takano, Yuji Watanabe
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Patent number: 6074511Abstract: A splicing method for plastic optical fibers, wherein solvent splicing is carried out by means of an organic solvent 4 capable of dissolving or swelling the plastic material of plastic optical fibers 1 and 2.Type: GrantFiled: January 11, 1999Date of Patent: June 13, 2000Assignee: Asahi Glass Company Ltd.Inventors: Yoshinobu Takano, Norihide Sugiyama
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Patent number: 5337169Abstract: A method of patterning an optical device for an optical IC whose purpose is to diffract a light beam incident on one surface of a device substrate to cause a light beam to emerge from another surface of the device. In this method, a layer of a substance of variable refractive index is formed on an optical substrate, coherent light is caused to irradiate the layer from the direction of the normal to the surface which will be the incidence side of the device when it is used or from the opposite side, and coherent light is caused to irradiate the layer from the direction of the normal to the surface which will be the emergence side of the device when it is used or from the opposite side to form an interference pattern on the layer that performs diffraction.Type: GrantFiled: February 23, 1993Date of Patent: August 9, 1994Assignee: Kabushiki Kaisha TopconInventors: Nobuo Hori, Yoshinobu Takano, Takashi Takahashi, Shigenori Nagano, Reiji Hashimoto