Patents by Inventor Tomohiko Nakajima
Tomohiko Nakajima 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: 20210257167Abstract: The present invention provides: a layered perovskite that has a high band gap energy and an excellent carrier transport capacity; a light absorption layer containing the layered perovskite; a light-absorption-layer-equipped substrate and a photoelectric conversion element that have the light absorption layer; and a solar cell having the photoelectric conversion element. In the layered perovskite according to present invention, the inter-surface distance of (002) planes calculated from an X-ray diffraction peak obtained by an out-of-plane method is 2.6 to 5.0 nm, and, in the X-ray diffraction peak, an intensity ratio ((111) plane/(002) plane) of an X-ray diffraction peak intensity at a (111) plane with respect to an X-ray diffraction peak intensity at the (002) plane is 0.03 or more.Type: ApplicationFiled: June 19, 2018Publication date: August 19, 2021Applicants: KAO CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Takuya SAWADA, Haruyuki SATO, Tomohiko NAKAJIMA, Tetsuo TSUCHIYA
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Patent number: 10745289Abstract: Provided is a vanadium oxide film which shows substantially no hysteresis of resistivity changes due to temperature rising/falling, has a low resistivity at room temperature, has a large absolute value of the temperature coefficient of resistance, and shows semiconductor-like resistance changes in a wide temperature range. In the vanadium oxide film, a portion of the vanadium has been replaced by aluminum and copper, and the amount of substance of aluminum is 10 mol % based on the sum total of the amount of substance of vanadium, the amount of substance of aluminum, and the amount of substance of copper. This vanadium oxide film has a low resistivity, has a large absolute value of the temperature coefficient of resistance, and shows substantially no hysteresis of resistivity changes due to temperature rising/falling.Type: GrantFiled: October 26, 2015Date of Patent: August 18, 2020Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Tetsuo Tsuchiya, Haruo Ishizaki, Tomohiko Nakajima, Kentaro Shinoda
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Patent number: 10622115Abstract: A first object is to provide a conductive film which is flexible from the standpoint that bending in a bending test or the like does not largely change its electrical resistance. Provided is a process for producing a flexible conductive film including applying a solution or dispersion containing at least any one of metal organic compounds, metals, and metal oxides onto a base material and treating the resulting film by at least either one of a heating step at a temperature not deteriorating the base material or an irradiation step with ultraviolet light, microwaves, or plasma.Type: GrantFiled: December 25, 2015Date of Patent: April 14, 2020Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Tetsuo Tsuchiya, Yuuko Uzawa, Tomohiko Nakajima
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Publication number: 20190338185Abstract: The phosphorescent phosphor of the present invention is represented by the composition formula: Sr1-aMgbZncAl2O4;EudMe wherein a, b, c, d, and e satisfy 0.05?a?0.8, 0.01?b?0.1, 0?c?0.2, 0?d?0.2, and 0?e?0.15, respectively, and M represents at least one element selected from the group consisting of dysprosium, samarium, lanthanum, praseodymium, terbium, holmium, thulium, lutetium, ytterbium, erbium, gadolinium, neodymium and cerium, and emits light due to excitation light in a wavelength region of 430 to 480 nm.Type: ApplicationFiled: December 26, 2017Publication date: November 7, 2019Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, TATEYAMA KAGAKU INDUSTRY CO., LTD.Inventors: Tetsuo TSUCHIYA, Yuuko UZAWA, Iwao YAMAGUCHI, Tomohiko NAKAJIMA, Takumi HIGA
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Publication number: 20180019038Abstract: A first object is to provide a conductive film which is flexible from the standpoint that bending in a bending test or the like does not largely change its electrical resistance. Provided is a process for producing a flexible conductive film including applying a solution or dispersion containing at least any one of metal organic compounds, metals, and metal oxides onto a base material and treating the resulting film by at least either one of a heating step at a temperature not deteriorating the base material or an irradiation step with ultraviolet light, microwaves, or plasma.Type: ApplicationFiled: December 25, 2015Publication date: January 18, 2018Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Tetsuo TSUCHIYA, Yuuko UZAWA, Tomohiko NAKAJIMA
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Publication number: 20170313595Abstract: Provided is a vanadium oxide film which shows substantially no hysteresis of resistivity changes due to temperature rising/falling, has a low resistivity at room temperature, has a large absolute value of the temperature coefficient of resistance, and shows semiconductor-like resistance changes in a wide temperature range. In the vanadium oxide film, a portion of the vanadium has been replaced by aluminum and copper, and the amount of substance of aluminum is 10 mol % based on the sum total of the amount of substance of vanadium, the amount of substance of aluminum, and the amount of substance of copper. This vanadium oxide film has a low resistivity, has a large absolute value of the temperature coefficient of resistance, and shows substantially no hysteresis of resistivity changes due to temperature rising/falling.Type: ApplicationFiled: October 26, 2015Publication date: November 2, 2017Applicant: National Institute of Advanced Industrial Science and TechnologyInventors: Tetsuo TSUCHIYA, Haruo ISHIZAKI, Tomohiko NAKAJIMA, Kentaro SHINODA
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Publication number: 20150371725Abstract: An inorganic material paste obtained by mixing an organometallic compound, inorganic material particles, and a solvent. Additionally provided is an inorganic material paste obtained by mixing inorganic material particles, which are obtained by subjecting an organometallic compound to calcination or light irradiation, and a solvent. The foregoing inorganic material paste can reduce the amount of glass material, reduce the film thickness because the volume density of the functional material is high, yield favorable production efficiency, and achieve cost reduction since it is suitable for mass production. For instance, upon producing a thin film resistor, the resistor obtained by using the paste of the present invention is characterized in having superior stability even in the form of a thin film, and having minimal change in the resistance value caused by self-heating even under a high current.Type: ApplicationFiled: January 29, 2014Publication date: December 24, 2015Inventors: Tetsuo Tsuchiya, Kentaro Shinoda, Tomohiko Nakajima
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Patent number: 9187842Abstract: A thin film which comprises an organic metal salt or an alkoxide salt or an amorphous thin film is formed on a substrate, wherein each of the thin films enables the formation of a Dion-Jacobson perovskite-type metal oxide represented by the composition formula A(Bn?1MnO3n+1) (wherein n is a natural number of 2 or greater; A represents one or more monovalent cations selected from Na, K, Rb and Cs; B comprises one or more components selected from a trivalent rare earth ion, Bi, a divalent alkaline earth metal ion and a monovalent alkali metal ion; and M comprises one or more of Nb and Ta; wherein a solid solution may be formed with Ti and Zr) on a non-oriented substrate. The resulting product is maintained at the temperature between room temperature and 600° C.; and crystallization is achieved while irradiating the amorphous thin film or the thin film comprising the organic metal salt or the alkoxide salt on the substrate with ultraviolet light such as ultraviolet laser.Type: GrantFiled: April 12, 2011Date of Patent: November 17, 2015Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Tomohiko Nakajima, Tetsuo Tsuchiya, Takaaki Manabe
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Patent number: 8871363Abstract: Provided is a resistor film comprising vanadium oxide as a main component, wherein metal-to-insulator transition is indicated in the vicinity of room temperature in temperature variations of electric resistance, there is no hysteresis in a resistance change in response to temperature variations or the temperature width is small at less than 1.5K even if there is hysteresis, and highly accurate measurement can be provided when used in a bolometer. Upon producing the resistor film comprising vanadium oxide as a main component by treating a coating film of an organovanadium compound via laser irradiation or the like, a crystalline phase and a noncrystalline (amorphous) phase are caused to coexist in the resistor film.Type: GrantFiled: September 1, 2010Date of Patent: October 28, 2014Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Tetsuo Tsuchiya, Masami Nishikawa, Tomohiko Nakajima, Toshiya Kumagai, Takaaki Manabe
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Publication number: 20130065065Abstract: A thin film which comprises an organic metal salt or an an alkoxide salt or an amorphous thin film is formed on a substrate, wherein each of the thin films enables the formation of a Dion-Jacobson perovskite-type metal oxide represented by the composition formula A(Bn?1MnO3n+1) (wherein n is a natural number of 2 or greater; A represents one or more monovalent cations selected from Na, K, Rb and Cs; B comprises one or more components selected from a trivalent rare earth ion, Bi, a divalent alkaline earth metal ion and a monovalent alkali metal ion; and M comprises one or more of Nb and Ta; wherein a solid solution may be formed with Ti and Zr) on a non-oriented substrate. The resulting product is maintained at the temperature between room temperature and 600° C.; and crystallization is achieved while irradiating the amorphous thin film or the thin film comprising the organic metal salt or the alkoxide salt on the substrate with ultraviolet light such as ultraviolet laser.Type: ApplicationFiled: April 12, 2011Publication date: March 14, 2013Inventors: Tomohiko Nakajima, Tetsuo Tsuchiya, Takaaki Manabe
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Publication number: 20120196150Abstract: Provided is a resistor film comprising vanadium oxide as a main component, wherein metal-to-insulator transition is indicated in the vicinity of room temperature in temperature variations of electric resistance, there is no hysteresis in a resistance change in response to temperature variations or the temperature width is small at less than 1.5K even if there is hysteresis, and highly accurate measurement can be provided when used in a bolometer. Upon producing the resistor film comprising vanadium oxide as a main component by treating a coating film of an organovanadium compound via laser irradiation or the like, a crystalline phase and a noncrystalline (amorphous) phase are caused to coexist in the resistor film.Type: ApplicationFiled: September 1, 2010Publication date: August 2, 2012Applicant: National Institute of Advance Industrial Science and TechnologyInventors: Tetsuo Tsuchiya, Masami Nishikawa, Tomohiko Nakajima, Toshiya Kumagai, Takaaki Manabe
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Patent number: 7771531Abstract: Provided is a manufacturing method of a crystallized rare-earth thin films on a glass or a silicon substrate. This manufacturing method of a crystallized metal oxide thin film includes a step of retaining an metal organic thin film or a metal oxide film containing at least one type of rare-earth metal element selected from a group comprised of Y, Dy, Sm, Gd, Ho, Eu, Tm, Tb, Er, Ce, Pr, Yb, La, Nd and Lu formed on a substrate at a temperature of 250 to 600° C., and a step of crystallizing the organic metal thin film or the metal oxide film while irradiating ultraviolet radiation having a wavelength of 200 nm or less.Type: GrantFiled: August 9, 2007Date of Patent: August 10, 2010Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Tetsuo Tsuchiya, Tomohiko Nakajima, Akio Watanabe, Toshiya Kumagai
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Publication number: 20080044590Abstract: Provided is a manufacturing method of a high-performance phosphor thin film material that enables a crystallized pervoskite-related Ti, Zr oxide thin film to be formed on a glass or a silicon substrate. This manufacturing method of a phosphor thin film includes a step of forming an organic metal thin film or a metal oxide film obtained by adding at least one element selected from a group comprised of Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu to a metal oxide represented with a composition formula of ABO3, A2BO4, A3B2O7 (provided that there may be a deficiency at the A, B, O sites) wherein A is an element selected from Ca, Sr and Ba, and B is a metal element selected from Ti and Zr on a substrate, and a step of irradiating an ultraviolet lamp to the substrate at room temperature and thereafter irradiating an ultraviolet laser thereto while retaining the substrate at a temperature of 400° C. or less. The film is subject to oxidation treatment after being crystallized.Type: ApplicationFiled: August 15, 2007Publication date: February 21, 2008Applicant: National Institute of Advanced Industrial Science and TechnologyInventors: Tetsuo Tsuchiya, Tomohiko Nakajima, Toshiya Kumagai
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Publication number: 20080035898Abstract: Provided is a manufacturing method of a crystallized rare-earth thin films on a glass or a silicon substrate. This manufacturing method of a crystallized metal oxide thin film includes a step of retaining an metal organic thin film or a metal oxide film containing at least one type of rare-earth metal element selected from a group comprised of Y, Dy, Sm, Gd, Ho, Eu, Tm, Tb, Er, Ce, Pr, Yb, La, Nd and Lu formed on a substrate at a temperature of 250 to 600° C., and a step of crystallizing the organic metal thin film or the metal oxide film while irradiating ultraviolet radiation having a wavelength of 200 nm or less.Type: ApplicationFiled: August 9, 2007Publication date: February 14, 2008Applicant: National Institute of Advanced Industrial Science and TechnologyInventors: Tetsuo Tsuchiya, Tomohiko Nakajima, Akio Watanabe, Toshiya Kumagai
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Patent number: 5935006Abstract: In a developing environment, a game program exists in a product ROM and a debug program exists in another ROM which is a test ROM. The debug program includes a time adjusting program and other debug routine programs. The game program includes some statements for the debug program. When a ROM cartridge is produced as a product ROM cartridge, the test ROM is detached from the ROM cartridge and the statements for the debug program are deleted from the game program in the product ROM. The deleted area in the product ROM is left as an unusable area. However, the deleted area is very few, because the size of the statements for debug program is much fewer than the size of the debug program. Therefore, the game program is able to use almost all product ROM area.Type: GrantFiled: December 19, 1996Date of Patent: August 10, 1999Assignee: Hudson Soft Co., Ltd.Inventor: Tomohiko Nakajima
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Patent number: 5816922Abstract: In a game apparatus and a method of debugging a game program, a based time is determined, then a start time of a debugging process in a game is set. Next, the based time is compared with the start time. If the based time is bigger than the start time, the start time of the debugging process in the game must be set again. In the game apparatus and the method of the present invention, therefore, the time in the game program is not inconsistency with a contents of a game history. The game program can be debugged correctly. Further, in developing a game program, a game program debug dose not waste working-time and working-load of a developer.Type: GrantFiled: December 19, 1996Date of Patent: October 6, 1998Assignee: Hudson Soft Co., Ltd.Inventor: Tomohiko Nakajima
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Patent number: 5783143Abstract: The object of the present invention is to provide an alloy steel having excellent erosion resistance to molten zinc and used as a material for parts and members for molten zinc plating facilities, e.g. sink roll, coating roll, roll frame and snout. The alloy in the present invention consists essentially of, by weight percent, about 0.10 to 0.17 wt % of carbon, from about 0.30 to 2% of silicon, from about 0.30 to about 2% manganese, from about 10% to 20% nickel, from about 20% to about 35% chromium, from about 0.50% to about 5% molybdenum and from not less than about 0.40% to about 0.75% nitrogen, the balance consisting of substantially of Fe, and unavoidable impurities. Tungsten, from about 0.5% to about 5%, may also be added to enhance the strength of the alloy.Type: GrantFiled: July 23, 1996Date of Patent: July 21, 1998Inventors: Takuo Handa, Tomohiko Nakajima, Kazuyoshi Arikata