Patents by Inventor Nobuaki Orita
Nobuaki Orita 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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Publication number: 20160318792Abstract: A production method of an optical fiber preform includes forming a porous preform by depositing a silica particle on a circumference of a target rod; and dehydrating and sintering the porous preform by at least three thermal treatment steps. A first and a second thermal treatment steps of the three thermal treatment steps dehydrate the porous preform in an atmosphere including halogen gas or halogen-based compound gas, and a processing temperature at the second thermal treatment step is higher than a processing temperature at the first thermal treatment step.Type: ApplicationFiled: July 12, 2016Publication date: November 3, 2016Applicant: Furukawa Electric Co., Ltd.Inventors: Ichihiko SUGANUMA, Nobuaki ORITA, Akihiro KANAO
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Publication number: 20150279519Abstract: A superconducting wire is provided which allows an appropriate critical current property to be obtained while maintaining high adhesive strength based on smoothness of a substrate surface that can be achieved without mechanical polishing or the like. A first intermediate layer 21 is formed by coating a material solution on a substrate 10 with a maximum height roughness Rz of 10 nm or more. This improves surface smoothness of the first intermediate layer 21, improves orientation and smoothness of a second intermediate layer 22 formed on the first intermediate layer 21, and increases a critical current in an oxide superconducting layer 30. Furthermore, the first intermediate layer 21 is formed of a plurality of thin coating film layers 21i.Type: ApplicationFiled: June 26, 2013Publication date: October 1, 2015Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Masaru Higuchi, Hisaki Sakamoto, Nobuaki Orita, Norihisa Shibayama
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Patent number: 8789393Abstract: A porous layer is formed by depositing a silica glass particle around a core rod. The porous layer is dehydrated. The dehydrated porous layer is sintered under a decreased pressure until the dehydrated porous layer becomes a translucent glass layer containing a closed pore. The translucent glass layer is vitrified under an ambient atmosphere including an inert gas other than a helium gas.Type: GrantFiled: November 29, 2005Date of Patent: July 29, 2014Assignee: The Furukawa Electric Co., Ltd.Inventors: Nobuaki Orita, Akihiro Kanao, Hideya Moridaira
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Patent number: 8778719Abstract: The linear semiconductor substrate 1 or 2 of the present invention comprises at least one desired thin film 4 formed on a linear substrate 3 having a length ten or more times greater than a width, thickness, or diameter of the linear substrate itself. Adopting semiconductor as the thin film 4 forms a linear semiconductor thin film. The linear semiconductor substrate 1 or 2 of the present invention is produced by utilizing a fiber-drawing technique which is a fabricating technique of optical fibers.Type: GrantFiled: September 6, 2011Date of Patent: July 15, 2014Assignee: Furukawa Electric Co., Ltd.Inventors: Toshihiro Nakamura, Nobuaki Orita, Hisashi Koaizawa, Kenkichi Suzuki, Hiroshi Kuraseko, Michio Kondo
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Patent number: 8658257Abstract: A method of manufacturing an optical fiber, comprises applying a UV cured resin to an outer circumference of a running glass optical fiber, forming an accompanying flow composed of an inert gas near a surface of the resin by passing the glass optical fiber immediately after having the resin being applied through an atmosphere of the inert gas, and forming a coating by irradiating the resin coated with the accompanying flow with ultraviolet ray to cure the resin while the glass optical fiber accompanied by the accompanying flow is passed through a UV transmission tube to which a gas containing oxygen is supplied.Type: GrantFiled: January 18, 2011Date of Patent: February 25, 2014Assignee: Furukawa Electric Co., Ltd.Inventors: Hiroshi Kuraseko, Nobuaki Orita, Yasuo Nakajima, Minoru Kasahara, Keisuke Ui
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Publication number: 20140050450Abstract: A porous layer is formed by depositing a silica glass particle around a core rod. The porous layer is dehydrated. The dehydrated porous layer is sintered under a decreased pressure until the dehydrated porous layer becomes a translucent glass layer containing a closed pore. The translucent glass layer is vitrified under an ambient atmosphere including an inert gas other than a helium gas.Type: ApplicationFiled: October 30, 2013Publication date: February 20, 2014Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Nobuaki ORITA, Akihiro KANAO, Hideya MORIDAIRA
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Publication number: 20120301610Abstract: A method of producing a glass preform by depositing silica powder that contains silica particles on a starting material includes a transferring step, a disaggregating step, and a depositing step. The transferring step includes transferring the silica powder. The disaggregating step includes disaggregating and dispersing agglomerates of the silica particles contained in the silica powder while being transferred in the transferring step. The depositing step includes depositing the silica powder, which is transferred and is obtained by disaggregating and dispersing the agglomerates of the silica particles, on the starting material.Type: ApplicationFiled: June 18, 2012Publication date: November 29, 2012Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Keiichi Aiso, Tetsuro Wada, Shinji Asao, Nobuaki Orita, Takeshi Yagi
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Publication number: 20120192594Abstract: Drawing methods and drawing furnaces for drawing an optical fiber with small non-circularity by simple drawing system are provided. An optical fiber preform is received into a muffle tube and heated by a primary heater placed to surround the muffle tube. The optical fiber preform is heated such that a starting position of a meniscus portion is higher in its position than the top of the primary heater, wherein the meniscus portion is created at the bottom portion of the optical fiber preform.Type: ApplicationFiled: March 2, 2012Publication date: August 2, 2012Applicant: FURUKAWA ELECTRIC COL, LTD.Inventors: Nobuaki ORITA, Takashi SUZUKI, Yoshiyuki SAKATA
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Publication number: 20120118018Abstract: A porous layer is formed by depositing a silica glass particle around a core rod. The porous layer is dehydrated. The dehydrated porous layer is sintered under a decreased pressure until the dehydrated porous layer becomes a translucent glass layer containing a closed pore. The translucent glass layer is vitrified under an ambient atmosphere including an inert gas other than a helium gas.Type: ApplicationFiled: January 26, 2012Publication date: May 17, 2012Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Nobuaki ORITA, Akihiro KANAO, Hideya MORIDAIRA
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Patent number: 8141392Abstract: Drawing methods and drawing furnaces for drawing an optical fiber with small non-circularity by simple drawing system are provided. An optical fiber preform is received into a muffle tube and heated by a primary heater placed to surround the muffle tube. The optical fiber preform is heated such that a starting position of a meniscus portion is higher in its position than the top of the primary heater, wherein the meniscus portion is created at the bottom portion of the optical fiber preform.Type: GrantFiled: March 23, 2009Date of Patent: March 27, 2012Assignee: The Furukawa Electric Co., Ltd.Inventors: Nobuaki Orita, Takashi Suzuki, Yoshiyuki Sakata
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Publication number: 20120034728Abstract: The linear semiconductor substrate 1 or 2 of the present invention comprises at least one desired thin film 4 formed on a linear substrate 3 having a length ten or more times greater than a width, thickness, or diameter of the linear substrate itself. Adopting semiconductor as the thin film 4 forms a linear semiconductor thin film. The linear semiconductor substrate 1 or 2 of the present invention is produced by utilizing a fiber-drawing technique which is a fabricating technique of optical fibers.Type: ApplicationFiled: September 6, 2011Publication date: February 9, 2012Applicant: Furukawa Electric Co, Ltd.Inventors: Toshihiro NAKAMURA, Nobuaki ORITA, Hisashi KOAIZAWA, Kenkichi SUZUKI, Hiroshi KURASEKO, Michio KONDO
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Patent number: 8039927Abstract: The linear semiconductor substrate 1 or 2 of the present invention comprises at least one desired thin film 4 formed on a linear substrate 3 having a length ten or more times greater than a width, thickness, or diameter of the linear substrate itself. Adopting semiconductor as the thin film 4 forms a linear semiconductor thin film. The linear semiconductor substrate 1 or 2 of the present invention is produced by utilizing a fiber-drawing technique which is a fabricating technique of optical fibers.Type: GrantFiled: March 23, 2006Date of Patent: October 18, 2011Assignee: The Furukawa Electric Co., Ltd.Inventors: Toshihiro Nakamura, Nobuaki Orita, Hisashi Koaizawa, Kenkichi Suzuki, Hiroshi Kuraseko, Michio Kondo
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Patent number: 7985494Abstract: A glass substrate for a magnetic disk satisfies Ra1?0.8 [nm], 0 [nm]?Ra1?Ra2?0.2 [nm], Wa1?0.6 [nm], and 0 [nm]?Wa2?Wa1?0.2 [nm]. Ra1 is an average surface roughness of a first annular area between 1 mm and 3 mm outward from an inner periphery of a main surface of the glass substrate, Ra2 is an average surface roughness of a second annular area between 1 mm and 3 mm inward from an outer periphery of the main surface, Wa1 is an average waviness of the first area in a circumferential direction of the glass substrate having a cycle of 300 ?m to 5 mm, and Wa2 is an average waviness of the second area in the circumferential direction having a cycle of 300 ?m to 5 mm.Type: GrantFiled: November 21, 2008Date of Patent: July 26, 2011Assignee: The Furukawa Electric Co., Ltd.Inventors: Nobuaki Orita, Yasuhiro Naka
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Publication number: 20110177257Abstract: A method of manufacturing an optical fiber, comprises applying a UV cured resin to an outer circumference of a running glass optical fiber, forming an accompanying flow composed of an inert gas near a surface of the resin by passing the glass optical fiber immediately after having the resin being applied through an atmosphere of the inert gas, and forming a coating by irradiating the resin coated with the accompanying flow with ultraviolet ray to cure the resin while the glass optical fiber accompanied by the accompanying flow is passed through a UV transmission tube to which a gas containing oxygen is supplied.Type: ApplicationFiled: January 18, 2011Publication date: July 21, 2011Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Hiroshi Kuraseko, Nobuaki Orita, Yasuo Nakajima, Minoru Kasahara, Keisuke Ui
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Patent number: 7976967Abstract: A main surface of a glass substrate for a magnetic disk is disk-shaped and has a ski jump on an outer peripheral end portion of the main surface opposing a magnetic head slider to be loaded. A rate of change of angles of tangents to a slope of the ski jump in a radial direction in a range between an inner circumferential side and a transition point on the slope is equal to or less than 10/W ?rad/mm where W is a width of the magnetic head slider.Type: GrantFiled: November 10, 2008Date of Patent: July 12, 2011Assignee: The Furukawa Electric Co., Ltd.Inventors: Hiroshi Kuraseko, Nobuaki Orita, Yasuhiro Naka
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Patent number: 7972715Abstract: A plurality of recording magnetization portions is arranged in a concentric manner around a center of a glass substrate. A plurality of non-magnetization portion having a thermal conductivity lower than that of the recording magnetization portions is formed each between adjacent recording magnetization portions along a circumferential direction on a main surface of the glass substrate. A mean squared roughness of a surface of an area where each of the non-magnetization portions is formed is equal to or smaller than 1 nanometer.Type: GrantFiled: February 9, 2009Date of Patent: July 5, 2011Assignee: The Furukawa Electric Co., Ltd.Inventors: Norihisa Shibayama, Yasuhiro Naka, Nobuaki Orita
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Publication number: 20100212364Abstract: An optical fiber manufacturing method, which recycles cooling gas with a simple system (less modification from a conventional device) is provided. The method comprises the steps of heating and melting an optical fiber preform, cooling the glass fiber obtained from the preform using a cooling device, and coating the cooled glass fiber with a coating material. During the cooling step, cooling gas is supplied from the bottom portion of the cooling device 4; a part of the cooling gas in the cooling device 4 is recovered from the top portion of the cooling device 4; and the recovered gas is re-supplied from the bottom portion of the cooling device 4.Type: ApplicationFiled: February 22, 2010Publication date: August 26, 2010Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Takashi SUZUKI, Hiroshi Kuraseko, Nobuaki Orita
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Publication number: 20090241604Abstract: Drawing methods and drawing furnaces for drawing an optical fiber with small non-circularity by simple drawing system are provided. An optical fiber preform is received into a muffle tube and heated by a primary heater placed to surround the muffle tube. The optical fiber preform is heated such that a starting position of a meniscus portion is higher in its position than the top of the primary heater, wherein the meniscus portion is created at the bottom portion of the optical fiber preform.Type: ApplicationFiled: March 23, 2009Publication date: October 1, 2009Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Nobuaki ORITA, Takashi Suzuki, Yoshiyuki Sakata
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Publication number: 20090239101Abstract: A plurality of recording magnetization portions is arranged in a concentric manner around a center of a glass substrate. A plurality of non-magnetization portion having a thermal conductivity lower than that of the recording magnetization portions is formed each between adjacent recording magnetization portions along a circumferential direction on a main surface of the glass substrate. A mean squared roughness of a surface of an area where each of the non-magnetization portions is formed is equal to or smaller than 1 nanometer.Type: ApplicationFiled: February 9, 2009Publication date: September 24, 2009Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Norihisa SHIBAYAMA, Yasuhiro Naka, Nobuaki Orita
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Publication number: 20090145168Abstract: A pressure detecting unit detects a pressure of supplying a resin to at least a hole for forming an innermost resin layer on an optical fiber from among a plurality of successive holes in a coating die. A control unit controls a discharge amount of a constant-rate pump that supplies the resin to the coating die in such a manner that a detected resin pressure becomes a predetermined value, and controls a temperature of the optical fiber so that the temperature of the optical fiber becomes a predetermined temperature in accordance with a variation of the discharge amount of the constant-rate pump.Type: ApplicationFiled: May 8, 2007Publication date: June 11, 2009Applicant: THE FURUKAWA ELECTRIC CO., LTDInventors: Nobuaki Orita, Peter Hasloev, Flemming Pedersen