Patents by Inventor Kazuhiro Oda
Kazuhiro Oda 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: 20150344992Abstract: A manufacturing method of an inexpensive aluminum alloy that allows fine crystallization of the Al—Fe—Si compound and primary Si by employing a convenient and efficient means. To a molten aluminum alloy including 8 to 20% by mass of Si; 0.5 to 4% by mass of Fe; and, as necessary, at least any one of Mn and Cr; at least any one of Ni, Cu, and Mg; P; and the balance being Al and impurities, AlB2, which is present as a solid phase in molten metal upon crystallization of the Al—Fe—Si compound, is added in such an amount that B is in a range of 0.01 to 0.5% by mass with respect to entire molten aluminum alloy. As the AlB2, an Al—B alloy which includes B as the AlB2 may be used.Type: ApplicationFiled: December 24, 2013Publication date: December 3, 2015Inventors: Kazuhiro Oda, Tetsuya Kikuiri, Tomohiro Isobe, Hiroshi Okada
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Publication number: 20150086449Abstract: Provided is a method of recovering rare-earth elements by which rare-earth elements can be recovered efficiently from a bauxite residue serving as a raw material and containing the rare-earth elements. Specifically provided is a method of recovering rare-earth elements from a raw material, the raw material being a bauxite residue produced as a by-product in a Bayer process, the method including: using a bauxite residue having a specific surface area of 35 m2/g or more; adding, to the raw material bauxite residue, a liquid leaching agent formed of an aqueous solution of at least one kind of mineral acid selected from sulfuric acid, hydrochloric acid, nitric acid, and sulfurous acid, thereby preparing a slurry having a liquid-solid ratio of 2 to 30 and a pH of 0.5 to 2.2; subjecting the slurry to leaching treatment of the rare-earth elements under a temperature condition of room temperature to 160° C.Type: ApplicationFiled: December 7, 2012Publication date: March 26, 2015Applicant: NIPPON LIGHT METAL COMPANY, LTD.Inventors: Kaoru Sugita, Yasushi Kobayashi, Yoshihiro Taguchi, Satoshi Takeda, Yuji Ota, Masashi Ojiri, Kazuhiro Oda, Hiroshi Sano
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Publication number: 20140283651Abstract: A method of production of inexpensive aluminum alloy is provided which enables precipitation of fine particles of Al—Fe—Si-based compounds and primary crystal Si to an aluminum alloy melt which is comprised of Si: 10 to 20 mass %, Fe: 0.5 to 4 mass %, P: 0.003 to 0.02 mass %, and further, if necessary, one or more of Mn, Ni, and Cr or furthermore, if necessary, one or more of Mg, Ti, Cr, Zr, and V, and has a balance of Al and unavoidable impurities. To the melt is added 0.01 to 1 mass %, in terms of silicide, of a substance, which includes fine particles of a metal silicide which are present as a solid phase in the melt, when the Al—Fe—Si-based compound is crystallized.Type: ApplicationFiled: October 3, 2012Publication date: September 25, 2014Inventors: Kazuhiro Oda, Tomohiro Isobe, Hiroshi Okada
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Publication number: 20140045053Abstract: A dispersant of the present invention is used after being added to a dispersant obtained by dispersing fine particles of a crystalline polymer as a dispersed particle and is characterized by containing a copolymer of a first monomer and a second monomer, the first monomer being a monomer that can be crystallized as a polymer having the molecular structure identical to that of the dispersed particle.Type: ApplicationFiled: November 8, 2011Publication date: February 13, 2014Applicant: Fukuoka UniversityInventors: Satoshi Ichikawa, Kazuhiro Oda, Shigeru Yao
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Publication number: 20130307383Abstract: An aluminum alloy casting having high electric resistance, high toughness and high corrosion resistance and optimally usable in manufacturing of electric motor housings, and a method of manufacturing said aluminum alloy casting are provided. The aluminum alloy casting has a composition including Si: 11.0-13.0 mass %, Fe: 0.2-1.0 mass %, Mn: 0.2-2.2 mass %, Mg: 0.7-1.3 mass %, Cr: 0.5-1.3 mass % and Ti: 0.1-0.5 mass %, with the balance consisting of Al and unavoidable impurities, wherein the content of Cu as an unavoidable impurity is limited to 0.2 mass % or less. In some cases, heat treatments such as solution heat treatment or artificial aging hardening treatment are performed after casting.Type: ApplicationFiled: January 27, 2011Publication date: November 21, 2013Applicant: Nippon Light Metal Company, Ltd.Inventors: Satoru Suzuki, Atsushi Kishimoto, Pizhi Zhao, Kazuhiro Oda, Tomohiro Isobe
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Patent number: 8526339Abstract: An echo cancellation circuit in a full duplex two-way communication system comprising: an input/output terminal; a subtractor having a positive and a negative input terminals, in which a first transmission signal is inputted to the negative input terminal as a pseudo echo signal, the first transmission signal is inputted through an output buffer to the positive input terminal as an echo signal, the pseudo echo signal inputted to the negative input terminal is subtracted from the echo signal inputted to the positive input terminal; and a result of the subtraction is outputted; and an echo cancellation error reducing unit having a D/A converter at an input side or an output side of the subtractor.Type: GrantFiled: March 9, 2011Date of Patent: September 3, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Shinji Nakatsuka, Kazuhiro Oda
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Publication number: 20130115129Abstract: An aluminum alloy which is excellent in high temperature strength and heat conductivity by adjusting the composition to one keeping down the drop in high temperature strength and making the Mn content as small as possible to reduce the formation of a solid solution in the aluminum, which aluminum alloy having a composition of ingredients which contains Si: 12 to 16 mass %, N: 0.1 to 2.5 mass %, Cu: 3 to 5 mass %, Mg: 0.3 to 1.2 mass %, Fe: 0.3 to 1.5 mass %, and P: 0.004 to 0.02 mass % and furthermore 0 to 0.1 mass % of Mn and further contains, as necessary, at least one of V: 0.01 to 0.1 mass %, Zr: 0.01 to 0.6 mass %, Cr: 0.01 to 0.2 mass %, and Ti: 0.01 to 0.2 mass %. Also described is a method for producing the aluminum alloy melt.Type: ApplicationFiled: July 6, 2011Publication date: May 9, 2013Applicant: NIPPON LIGHT METAL COMPANY, LTD.Inventors: Jie Xing, Izumi Yamamoto, Kazuhiro Oda, Yutaka Ishida, Hiroshi Horikawa
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Publication number: 20110222446Abstract: An echo cancellation circuit in a full duplex two-way communication system comprising: an input/output terminal; a subtractor having a positive and a negative input terminals, in which a first transmission signal is inputted to the negative input terminal as a pseudo echo signal, the first transmission signal is inputted through an output buffer to the positive input terminal as an echo signal, the pseudo echo signal inputted to the negative input terminal is subtracted from the echo signal inputted to the positive input terminal; and a result of the subtraction is outputted; and an echo cancellation error reducing unit having a D/A converter at an input side or an output side of the subtractor.Type: ApplicationFiled: March 9, 2011Publication date: September 15, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Shinji Nakatsuka, Kazuhiro Oda
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Publication number: 20100296964Abstract: [Objectives] An aluminum alloy for casting with excellent rigidity and having a low coefficient of linear expansion, and at the same time, does not have a high cost, and has a few restrictions at the time of recycling. [Means for Achieving Objectives] An aluminum alloy for casting with excellent rigidity and having a low coefficient of linear expansion containing 13-25% by mass of silicon, 2-8% by mass of copper, 0.5-3% by mass of iron, 0.3-3% by mass of manganese, 0.001-0.02% by mass of phosphorus, and the remainder comprising aluminum and inevitable impurities, wherein the total amount of iron and manganese is 3.0% by mass or greater. Said alloy may further contain 0.5-6% by mass of nickel, and the total amount of iron, manganese, and nickel may be 3.0% by mass or greater. Further, said alloy may further contain one or more of 0.1-1.0% by mass of chromium, 0.05-1.5% by mass of magnesium, 0.01-1.0% by mass of titanium, 0.0001-1.0% by mass of boron, 0.1-1.0% by mass of zirconium, 0.1-1.Type: ApplicationFiled: August 2, 2010Publication date: November 25, 2010Applicant: NIPPON LIGHT METAL COMPANY, LTD.Inventors: Kazuhiro ODA, Masahiko Shioda
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Publication number: 20100089613Abstract: Disclosed is an electronic component comprising a connecting terminal part having a surface of an electroconductive base material and a germanium-containing nickel plating film provided on the surface. In the electronic component, the plating film provided on the surface of the electroconductive base material in the connecting terminal part possesses excellent heat resistance and solder wettability.Type: ApplicationFiled: March 10, 2009Publication date: April 15, 2010Inventors: Mamoru Takayanagi, Kazuhiro Oda, Takayoshi Michino, Takehiko Suzuki
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Patent number: 7599267Abstract: An objective of the present invention is to enhance reliability of recorded data by preventing deterioration of OPC (Optimum Power Calibration) accuracy due to an influence of inter-layer interference in an optical disk device capable of writing in a multilayer optical disk. Aiming at the objective, a relationship between asymmetry and a signal modulation depth, which are measured by use of a standard driver is referred, and thereby an offset caused by a device, a disk, a writing state of another layer and the like is compensated. Thus, OPC is executed.Type: GrantFiled: August 15, 2006Date of Patent: October 6, 2009Assignees: Hitachi, Ltd., Hitachi-LG Data Storage, IncInventors: Koichi Watanabe, Hiroyuki Minemura, Mitsunori Kobayashi, Kazuhiro Oda
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Patent number: 7382723Abstract: A hitless switching system includes a sending apparatus and a receiving apparatus. The sending apparatus includes: a distributing part for dividing an original signal into a plurality of signals; and a transmitting part for transmitting the divided signals over one or a plurality of transmission lines with redundancy. The receiving apparatus includes: a phase difference detection part for detecting phase differences between signals sent from the sending apparatus; a phase difference absorbing part for absorbing phase differences detected by the phase difference detection part; selectors each of which selects one signal from a plurality of signals; and a restoring part for restoring the original signal from the signals output from the selectors.Type: GrantFiled: March 3, 2003Date of Patent: June 3, 2008Assignee: Nippon Telegraph and Telephone CorporationInventors: Atsushi Sutoh, Kazuhiro Oda
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Patent number: 7383557Abstract: In a recording disk apparatus, a pickup element and an electric element for at lease one of supplying an electric power to at least one of a recording disk driving motor and the pickup and processing a signal to be recorded into the recording disk and/or the signal read from the recording disk are prevented from overlapping each other as seen in a thickness direction of the recording disk to restrain a thermal conduction between the pickup element and the electric element so that a thermal conduction restraining area extending along an imaginary directional line crossing an imaginary straight line passing the pickup element and the electric element as seen in the thickness direction is formed between the pickup element and the electric element as seen in the thickness direction.Type: GrantFiled: December 21, 2004Date of Patent: June 3, 2008Assignee: Hitachi - LG Data Storage, Inc.Inventors: Hiroyuki Toyoda, Shigeo Ohashi, Yoshiaki Yamauchi, Kazuhiro Oda, Makoto Ibe
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Publication number: 20070280087Abstract: An objective of the present invention is to enhance reliability of recorded data by preventing deterioration of OPC (Optimum Power Calibration) accuracy due to an influence of inter-layer interference in an optical disk device capable of writing in a multilayer optical disk. Aiming at the objective, a relationship between asymmetry and a signal modulation depth, which are measured by use of a standard driver is referred, and thereby an offset caused by a device, a disk, a writing state of another layer and the like is compensated. Thus, OPC is executed.Type: ApplicationFiled: August 15, 2006Publication date: December 6, 2007Inventors: Koichi Watanabe, Hiroyuki Minemura, Mitsunori Kobayashi, Kazuhiro Oda
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Publication number: 20070193663Abstract: An aluminum alloy for casting with excellent rigidity and having a low coefficient of linear expansion containing 13-25% by mass of silicon, 2-8% by mass of copper, 0.5-3% by mass of iron, 0.3-3% by mass of manganese, 0.001-0.02% by mass of phosphorus, and the remainder comprising aluminum and inevitable impurities, wherein the total amount of iron and manganese is 3.0% by mass or greater. Said alloy may further contain 0.5-6% by mass of nickel, and the total amount of iron, manganese, and nickel may be 3.0% by mass or greater. Further, said alloy may further contain one or more of 0.1-1.0% by mass of chromium, 0.05-1.5% by mass of magnesium, 0.01-1.0% by mass of titanium, 0.0001-1.0% by mass of boron, 0.1-1.0% by mass of zirconium, 0.1-1.0% by mass of vanadium, or 0.01-1.0% by mass of molybdenum.Type: ApplicationFiled: March 23, 2005Publication date: August 23, 2007Applicant: NIPPON LIGHT METAL COMPANY, LTD.Inventors: Kazuhiro Oda, Masahiko Shioda
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Publication number: 20050169120Abstract: In a recording disk apparatus, a pickup element and an electric element for at lease one of supplying an electric power to at least one of a recording disk driving motor and the pickup and processing a signal to be recorded into the recording disk and/or the signal read from the recording disk are prevented from overlapping each other as seen in a thickness direction of the recording disk to restrain a thermal conduction between the pickup element and the electric element so that a thermal conduction restraining area extending along an imaginary directional line crossing an imaginary straight line passing the pickup element and the electric element as seen in the thickness direction is formed between the pickup element and the electric element as seen in the thickness direction.Type: ApplicationFiled: December 21, 2004Publication date: August 4, 2005Applicant: Hitachi-LG Data Storage, Inc.Inventors: Hiroyuki Toyoda, Shigeo Ohashi, Yoshiaki Yamauchi, Kazuhiro Oda, Makoto Ibe
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Patent number: 6700846Abstract: The present invention provides a single information recording and reproducing apparatus that is used to record data to multiple disks that are to be recorded on using different wavelengths. More specifically, the present invention provides an apparatus that accurately discriminates disk types while preventing disk damage and accidental recording of data during the disk type discrimination operation. The disk type is determined using the intensity of light reflected from the disk. Information is encoded using an encoder corresponding to the disk type. The resulting signal is used to drive a laser corresponding to the disk type, and information is recorded.Type: GrantFiled: January 9, 2003Date of Patent: March 2, 2004Assignee: Hitachi, Ltd.Inventors: Tokinori Furuichi, Yuji Hirai, Hiroyuki Hayashi, Gohshi Jin, Kazuhiro Oda, Naomi Nomura, Seiji Inaba
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Publication number: 20030165115Abstract: A hitless switching system includes a sending apparatus and a receiving apparatus. The sending apparatus includes: a distributing part for dividing an original signal into a plurality of signals; and a transmitting part for transmitting the divided signals over one or a plurality of transmission lines with redundancy. The receiving apparatus includes: a phase difference detection part for detecting phase differences between signals sent from the sending apparatus; a phase difference absorbing part for absorbing phase differences detected by the phase difference detection part; selectors each of which selects one signal from a plurality of signals; and a restoring part for restoring the original signal from the signals output from the selectors.Type: ApplicationFiled: March 3, 2003Publication date: September 4, 2003Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Atsushi Sutoh, Kazuhiro Oda
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Publication number: 20030095486Abstract: The present invention provides a single information recording and reproducing apparatus that is used to record data to multiple disks that are to be recorded on using different wavelengths. More specifically, the present invention provides an apparatus that accurately discriminates disk types while preventing disk damage and accidental recording of data during the disk type discrimination operation. The disk type is determined using the intensity of light reflected from the disk. Information is encoded using an encoder corresponding to the disk type. The resulting signal is used to drive a laser corresponding to the disk type, and information is recorded.Type: ApplicationFiled: January 9, 2003Publication date: May 22, 2003Applicant: HITACHI, LTD.Inventors: Tokinori Furuichi, Yuji Hirai, Hiroyuki Hayashi, Gohshi Jin, Kazuhiro Oda, Naomi Nomura, Seiji Inaba
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Patent number: 6510115Abstract: The present invention provides a single information recording and reproducing apparatus that is used to record data to multiple disks that are to be recorded on using different wavelengths. More specifically, the present invention provides an apparatus that accurately discriminates disk types while preventing disk damage and accidental recording of data during the disk type discrimination operation. The disk type is determined using the intensity of light reflected from the disk. Information is encoded using an encoder corresponding to the disk type. The resulting signal is used to drive a laser corresponding to the disk type, and information is recorded.Type: GrantFiled: April 24, 2001Date of Patent: January 21, 2003Assignee: Hitachi, Ltd.Inventors: Tokinori Furuichi, Yuji Hirai, Hiroyuki Hayashi, Gohshi Jin, Kazuhiro Oda, Naomi Nomura, Seiji Inaba