Patents by Inventor Takemi Muroga
Takemi Muroga 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: 8293033Abstract: A rolled copper foil consisted of at least either of silicon (Si) and iron (Fe), boron (B), silver (Ag), oxygen (O) of 0.002 mass % or less, and a balance consisted of copper (Cu) and inevitable impurities.Type: GrantFiled: December 17, 2010Date of Patent: October 23, 2012Assignee: Hitachi Cable, Ltd.Inventors: Takemi Muroga, Satoshi Seki, Noboru Hagiwara
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Patent number: 8221897Abstract: A rolled copper foil according to the present invention includes a crystal grain alignment wherein: when normalized intensity of {200}Cu plane diffraction of a copper crystal in results obtained by an X-ray diffraction pole figure measurement with respect to a rolled surface is plotted against at different values of angle ?, the normalized intensity being obtained during a ? scanning in the pole figure measurement, a ratio of a maximum value A of the normalized intensity with angle ? in a range of 40° to 60° to a maximum value B of the normalized intensity with angle ? in a range of 80° to 90° is equal to or greater than 4; and when the normalized intensity increases with increasing angle ? in a range of 25° to 45°, there is essentially no area in which the normalized intensity increases stepwise.Type: GrantFiled: July 8, 2008Date of Patent: July 17, 2012Assignee: Hitachi Cable, Ltd.Inventors: Takemi Muroga, Yasuyuki Ito, Koji Aoyagi, Yoshiki Yamamoto, Kenji Yokomizo
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Patent number: 8137489Abstract: A copper alloy material has a rolled surface having a plurality of crystal faces parallel to the rolled surface. The crystal faces includes at least one crystal face selected from a group consisted of {011}, {1nn} (n is an integer, n?1), {11m} (m is an integer, m?1), {023}, {012}, and {135}. Diffraction intensities of the crystal faces in an inverse pole figure obtained by crystal diffraction measurement of the rolled surface as a reference satisfy the relationships of: {011}>{155}>{133}, {011}>{023}>{012}, and {011}>{135}>{112}.Type: GrantFiled: June 19, 2009Date of Patent: March 20, 2012Assignee: Hitachi Cable, Ltd.Inventors: Takemi Muroga, Noboru Hagiwara, Yoshiki Yamamoto
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Publication number: 20110311836Abstract: A rolled copper foil consisted of at least either of silicon (Si) and iron (Fe), boron (B), silver (Ag), oxygen (O) of 0.002 mass % or less, and a balance consisted of copper (Cu) and inevitable impurities.Type: ApplicationFiled: December 17, 2010Publication date: December 22, 2011Inventors: Takemi Muroga, Satoshi Seki, Noboru Hagiwara
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Publication number: 20100323214Abstract: A rolled copper foil includes copper (Cu), an inevitable impurity, a first additive element that forms a solid solution in the copper, and a second additive element that is different from the first additive element, is contained in the copper, and forms a compound with the inevitable impurity.Type: ApplicationFiled: October 13, 2009Publication date: December 23, 2010Applicant: HITACHI CABLE, LTD.Inventors: Takemi Muroga, Satoshi Seki, Noboru Hagiwara
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Publication number: 20100291402Abstract: A rolled copper foil applied with a recrystallization annealing after a final cold rolling step and having a crystal grain alignment satisfying a ratio of [a]/[b]?3, where [a] and [b] are normalized average intensities of a {111}Cu plane diffraction of a copper crystal by ?-scanning at ?=35° and 74°, respectively, in an X-ray diffraction pole figure measurement to a rolled surface is manufactured by controlling a total working ratio in the final cold rolling step before the recrystallization annealing to be 94% or more; and controlling a working ratio per one pass in the final cold rolling step to be 15 to 50%.Type: ApplicationFiled: July 30, 2010Publication date: November 18, 2010Inventors: Takemi Muroga, Yasuyuki Ito, Koji Aoyagi, Yoshiki Yamamoto, Kenji Yokomizo, Katsumi Nomura
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Publication number: 20100224292Abstract: A copper alloy material has a rolled surface having a plurality of crystal faces parallel to the rolled surface. The crystal faces includes at least one crystal face selected from a group consisted of {011}, {1nn} (n is an integer, n?1), {11m} (m is an integer, m?1), {023}, {012}, and {135}. Diffraction intensities of the crystal faces in an inverse pole figure obtained by crystal diffraction measurement of the rolled surface as a reference satisfy the relationships of: {011}>{155}>{133}, {011}>{023}>{012}, and {011}>{135}>{112}.Type: ApplicationFiled: June 19, 2009Publication date: September 9, 2010Inventors: Takemi Muroga, Noboru Hagiwara, Yoshiki Yamamoto
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Patent number: 7789977Abstract: A rolled copper foil applied with a recrystallization annealing after a final cold rolling step and having a crystal grain alignment satisfying a ratio of [a]/[b]?3, where [a] and [b] are normalized average intensities of a {111}Cu plane diffraction of a copper crystal by ?-scanning at ?=35° and 74°, respectively, in an X-ray diffraction pole figure measurement to a rolled surface is manufactured by controlling a total working ratio in the final cold rolling step before the recrystallization annealing to be 94% or more; and controlling a working ratio per one pass in the final cold rolling step to be 15 to 50%.Type: GrantFiled: March 7, 2007Date of Patent: September 7, 2010Assignee: Hitachi Cable, Ltd.Inventors: Takemi Muroga, Yasuyuki Ito, Koji Aoyagi, Yoshiki Yamamoto, Kenji Yokomizo, Katsumi Nomura
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Publication number: 20090173414Abstract: A rolled copper foil, according to the present invention, obtained after a final cold rolling step but before recrystallization annealing includes a group of crystal grains which exhibits four-fold symmetry in results obtained by X-ray diffraction (XRD) pole figure measurement with respect to a rolled surface. In the XRD pole figure measurement, at least four peaks of a {220}Cu plane diffraction of a copper crystal due to the group of crystal grains exhibiting the four-fold symmetry, which is obtained during ? axis scanning with an ? angle set to 45°, appear at intervals of 90°±5° along the ? angle.Type: ApplicationFiled: December 31, 2008Publication date: July 9, 2009Inventors: Takemi Muroga, Gen Sasaki, Yoshiki Yamamoto, Satoshi Seki
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Publication number: 20090166066Abstract: A copper foil according to the present invention has a B/A ratio within a range of 1.2 to 3.0, where B is an inclination value of a straight line in a straight portion of a rising area near the origin of a stress-strain curve of the copper foil which is measured before the copper foil is heated to 300° C.; and A is an inclination value of a straight line in a straight portion of a rising area near the origin of a stress-strain curve of the copper foil that is measured after the copper foil is heated to 300° C.Type: ApplicationFiled: December 23, 2008Publication date: July 2, 2009Inventors: Takemi MUROGA, Kenji YOKOMIZO
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Publication number: 20090017325Abstract: A rolled copper foil according to the present invention includes a crystal grain alignment wherein: when normalized intensity of {200}Cu plane diffraction of a copper crystal in results obtained by an X-ray diffraction pole figure measurement with respect to a rolled surface is plotted against at different values of angle ?, the normalized intensity being obtained during a ? scanning in the pole figure measurement, a ratio of a maximum value A of the normalized intensity with angle ? in a range of 40° to 60° to a maximum value B of the normalized intensity with angle ? in a range of 80° to 90° is equal to or greater than 4; and when the normalized intensity increases with increasing angle ? in a range of 25° to 45°, there is essentially no area in which the normalized intensity increases stepwise.Type: ApplicationFiled: July 8, 2008Publication date: January 15, 2009Inventors: Takemi Muroga, Yasuyuki Ito, Koji Aoyagi, Yoshiki Yamamoto, Kenji Yokomizo
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Publication number: 20080099110Abstract: A rolled copper foil applied with a recrystallization annealing after a final cold rolling step and having a crystal grain alignment satisfying a ratio of [a]/[b]?3, where [a] and [b] are normalized average intensities of a {111}Cu plane diffraction of a copper crystal by ?-scanning at ?=35° and 74°, respectively, in an X-ray diffraction pole figure measurement to a rolled surface is manufactured by controlling a total working ratio in the final cold rolling step before the recrystallization annealing to be 94% or more; and controlling a working ratio per one pass in the final cold rolling step to be 15 to 50%.Type: ApplicationFiled: March 7, 2007Publication date: May 1, 2008Inventors: Takemi Muroga, Yasuyuki Ito, Koji Aoyagi, Yoshiki Yamamoto, Kenji Yokomizo, Katsumi Nomura
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Publication number: 20060199741Abstract: There is provided is a method of manufacturing a superconductor layer, including preparing a coating solution by dissolving trifluoroacetates of at least one metal selected from the group consisting of yttrium and lanthanoids, barium, and copper in a solvent, coating a main surface of a substrate with the coating solution to form a coating film, subjecting the coating film to a calcining process in an atmosphere containing oxygen, and subjecting the coating film after the calcining process to a firing process in an atmosphere containing water vapor at a temperature higher than that at the calcining process. The calcining process is carried out such that the coating film after the calcining process and before the firing process have an average CuO particle diameter equal to or less than 25 nm.Type: ApplicationFiled: May 3, 2006Publication date: September 7, 2006Inventors: Takeshi Araki, Toshiharu Niwa, Takemi Muroga, Yutaka Yamada, Izumi Hirabayashi
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Patent number: 7069065Abstract: There is provided is a method of manufacturing a superconductor layer, including preparing a coating solution by dissolving trifluoroacetates of at least one metal selected from the group consisting of yttrium and lanthanoids, barium, and copper in a solvent, coating a main surface of a substrate with the coating solution to form a coating film, subjecting the coating film to a calcining process in an atmosphere containing oxygen, and subjecting the coating film after the calcining process to a firing process in an atmosphere containing water vapor at a temperature higher than that at the calcining process. The calcining process is carried out such that the coating film after the calcining process and before the firing process have an average CuO particle diameter equal to or less than 25 nm.Type: GrantFiled: April 7, 2004Date of Patent: June 27, 2006Assignees: Kabushiki Kaisha Toshiba, Chubu Electric Power Co., Inc., Hitachi Cable Ltd., International Superconductivity Technology CenterInventors: Takeshi Araki, Toshiharu Niwa, Takemi Muroga, Yutaka Yamada, Izumi Hirabayashi
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Publication number: 20040192559Abstract: There is provided is a method of manufacturing a superconductor layer, including preparing a coating solution by dissolving trifluoroacetates of at least one metal selected from the group consisting of yttrium and lanthanoids, barium, and copper in a solvent, coating a main surface of a substrate with the coating solution to form a coating film, subjecting the coating film to a calcining process in an atmosphere containing oxygen, and subjecting the coating film after the calcining process to a firing process in an atmosphere containing water vapor at a temperature higher than that at the calcining process. The calcining process is carried out such that the coating film after the calcining process and before the firing process have an average CuO particle diameter equal to or less than 25 nm.Type: ApplicationFiled: April 7, 2004Publication date: September 30, 2004Applicants: KABUSHIKI KAISHA TOSHIBA, CHUBU ELECTRIC POWER CO., INC., HITACHI CABLE LTD., International Superconductivity Technology CenterInventors: Takeshi Araki, Toshiharu Niwa, Takemi Muroga, Yutaka Yamada, Izumi Hirabayashi
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Publication number: 20040026118Abstract: An oxide superconducting wire composed of a metal substrate, an intermediate layer vapor-deposited by an ion beam assisted deposition method (IBAD method) on the metal substrate, a CeO2 cap layer vapor-deposited on the intermediate layer by the PLD method or another such method, and an oxide superconducting film formed on the cap layer, wherein the thickness of the intermediate layer is no more than 2000 nm, and the thickness of the cap layer is at least 50 nm. The time it takes to form a film by the IBAD method can be shortened, and the orientation of the resulting superconducting film can be improved, by reducing the thickness of the intermediate layer manufactured by the IBAD method as above and increasing the thickness of the cap layer. The oxide superconducting wire can be obtained at low cost and with high critical current density.Type: ApplicationFiled: August 4, 2003Publication date: February 12, 2004Inventors: Takemi Muroga, Yutaka Yamada, Takeshi Araki, Izumi Hirabayashi, Teruo Izumi, Yuh Shiohara, Yasuhiro Iijima