Patents by Inventor Masato Takiguchi
Masato Takiguchi 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).
-
Publication number: 20240405513Abstract: A nanowire laser includes a nanowire on a substrate and a one-dimensional photonic crystals on ends the nanowire. The nanowire is disposed on a substrate. The nanowire has an elliptical cross-sectional shape with a longitudinal direction parallel to a plane of the substrate. The one-dimensional photonic crystals are separated from each other to form a resonator.Type: ApplicationFiled: October 8, 2021Publication date: December 5, 2024Inventors: Masato Takiguchi, Masaya Notomi, Satoshi Sasaki, Guoqiang Zhang, Kota Tateno, Hisashi Sumikura, Akihiko Shinya
-
Patent number: 12155012Abstract: A nanowire optical device includes: a photonic crystal body having a planar shape and provided on a base part; an optical waveguide by a line defect in which a plurality of defects including a part without grating elements of the photonic crystal body are linearly arrayed; a trench formed in a waveguide direction in the optical waveguide; a nanowire made of a semiconductor and arranged in the trench; an n-type region formed on one end side of the nanowire; a p-type region formed on the other end side of the nanowire; an active region provided to be interposed between the n-type region and the p-type region in the nanowire; a first electrode connected to the n-type region; and a second electrode connected to the p-type region.Type: GrantFiled: October 31, 2019Date of Patent: November 26, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Masato Takiguchi, Masaya Notomi, Satoshi Sasaki, Kota Tateno, Atsushi Yokoo, Guoqiang Zhang, Sergent Sylvain, Akihiko Shinya
-
Patent number: 12124080Abstract: A photonic crystal device to be used for trapping an atom and including a photonic crystal body, a slot waveguide, and an attractive force trap light laser. The photonic crystal body includes a base and a plurality of lattice elements periodically provided on the base, the slot waveguide is arranged between periodic lattice rows and includes an opening on one side face of the photonic crystal body, and the attractive force trap light laser is excited by excitation light incident from the opening and oscillates at a wavelength being longer than a wavelength of an absorption edge of the atom.Type: GrantFiled: April 21, 2020Date of Patent: October 22, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Masato Takiguchi, Tetsuya Mukai, Masaya Notomi, Naotomo Takemura, Akihiko Shinya
-
Publication number: 20240128718Abstract: An optical device includes a photonic crystal main unit, an optical waveguide, an active region, an active substance, and a light source. The active region is formed in the optical waveguide and accommodates the liquid active substance formed with a four-level light-emitting material. For example, an accommodating unit formed in the active region is provided, and the active substance is accommodated in the accommodating unit. The active substance can be formed with an aqueous solution of a dye such as rhodamine, for example.Type: ApplicationFiled: March 5, 2021Publication date: April 18, 2024Inventors: Masato Takiguchi, Masaya Notomi, Naotomo Takemura, Akihiko Shinya
-
Publication number: 20230266504Abstract: An optical element includes a plate-shaped photonic crystal body including a base and a plurality of lattice elements having a cylindrical hollow structure. The lattice elements are, for example, a cylinder. The plurality of lattice elements are periodically provided on a base in a lattice shape at intervals equal to or less than a wavelength of a target light. The photonic crystal body is a so-called two-dimensional slab type photonic crystal. Furthermore, the optical element includes a light confinement part composed of the lattice elements into which a microstructure made of a solid material is inserted.Type: ApplicationFiled: September 1, 2020Publication date: August 24, 2023Inventors: Masato Takiguchi, Masaya Notomi, Hideaki Taniyama, Akihiko Shinya
-
Publication number: 20230108297Abstract: A photonic crystal device to be used for trapping an atom and including a photonic crystal body, a slot waveguide, and an attractive force trap light laser. The photonic crystal body includes a base and a plurality of lattice elements periodically provided on the base, the slot waveguide is arranged between periodic lattice rows and includes an opening on one side face of the photonic crystal body, and the attractive force trap light laser is excited by excitation light incident from the opening and oscillates at a wavelength being longer than a wavelength of an absorption edge of the atom.Type: ApplicationFiled: April 21, 2020Publication date: April 6, 2023Inventors: Masato Takiguchi, Tetsuya Mukai, Masaya Notomi, Naotomo Takemura, Akihiko Shinya
-
Patent number: 11391887Abstract: The amount of outward shift of a lattice element (131a) and a lattice element (131b), the outward shift being symmetrical with respect to a resonator center on a straight line, is 0.42 to 0.5 times a lattice constant of a photonic crystal. The amount of outward shift of a lattice element (132a) and a lattice element (132b), the outward shift being symmetrical with respect to the resonator center on the straight line, is 0.26 to 0.38 times the lattice constant of the photonic crystal. The amount of outward shift of a lattice element (133a) and a lattice element (133b), the outward shift being symmetrical with respect to the resonator center on the straight line, is 0.13 to 0.19 times the lattice constant of the photonic crystal. The amount of outward shift of a lattice element (134a) and a lattice element (134b), the outward shift being symmetrical with respect to the resonator center on the straight line, is ?0.1 to 0 times the lattice constant of the photonic crystal.Type: GrantFiled: July 9, 2019Date of Patent: July 19, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Eiichi Kuramochi, Akihiko Shinya, Masaya Notomi, Kengo Nozaki, Masato Takiguchi, Kenta Takata
-
Publication number: 20210408336Abstract: A nanowire optical device includes: a photonic crystal body having a planar shape and provided on a base part; an optical waveguide by a line defect in which a plurality of defects including a part without grating elements of the photonic crystal body are linearly arrayed; a trench formed in a waveguide direction in the optical waveguide; a nanowire made of a semiconductor and arranged in the trench; an n-type region formed on one end side of the nanowire; a p-type region formed on the other end side of the nanowire; an active region provided to be interposed between the n-type region and the p-type region in the nanowire; a first electrode connected to the n-type region; and a second electrode connected to the p-type region.Type: ApplicationFiled: October 31, 2019Publication date: December 30, 2021Inventors: Masato Takiguchi, Masaya Notomi, Satoshi Sasaki, Kota Tateno, Atsushi Yokoo, Guoqiang Zhang, Sergent Sylvain, Akihiko Shinya
-
Publication number: 20210238749Abstract: First, in a first step S101, a semiconductor layer composed of a p type Group III-V compound semiconductor is prepared. The semiconductor layer may be composed of a Group III-V compound semiconductor crystal. Next, in a second step S102, gold is grown on a surface of the above semiconductor layer according to an electroless plating method to form fine gold particles. In this step, for example, an electroless plating solution of gold is brought into contact with a surface of the semiconductor layer such as by immersing the semiconductor layer in the electroless gold plating solution. In addition, in this plating treatment, the liquid temperature of the electroless gold plating solution may be room temperature (about 20° C. to 30° C.).Type: ApplicationFiled: July 29, 2019Publication date: August 5, 2021Applicants: Nippon Telegraph and Telephone Corporation, Nippon Telegraph and Telephone CorporationInventors: Kota Tateno, Satoshi Sasaki, Guoqiang Zhang, Masato Takiguchi
-
Publication number: 20210231867Abstract: The amount of outward shift of a lattice element (131a) and a lattice element (131b), the outward shift being symmetrical with respect to a resonator center on a straight line, is 0.42 to 0.5 times a lattice constant of a photonic crystal. The amount of outward shift of a lattice element (132a) and a lattice element (132b), the outward shift being symmetrical with respect to the resonator center on the straight line, is 0.26 to 0.38 times the lattice constant of the photonic crystal. The amount of outward shift of a lattice element (133a) and a lattice element (133b), the outward shift being symmetrical with respect to the resonator center on the straight line, is 0.13 to 0.19 times the lattice constant of the photonic crystal. The amount of outward shift of a lattice element (134a) and a lattice element (134b), the outward shift being symmetrical with respect to the resonator center on the straight line, is ?0.1 to 0 times the lattice constant of the photonic crystal.Type: ApplicationFiled: July 9, 2019Publication date: July 29, 2021Inventors: Eiichi Kuramochi, Akihiko Shinya, Masaya Notomi, Kengo Nozaki, Masato Takiguchi, Kenta Takata
-
Patent number: 9775331Abstract: Disclosed is a mouse artificial chromosome vector, comprising: a natural centromere derived from a mouse chromosome; a mouse-chromosome-derived long-arm fragment formed by deleting a long-arm distal region at a mouse chromosome long-arm site proximal to the centromere; and a telomere sequence, wherein the vector is stably retained in a cell and/or tissue of a mammal. In addition, disclosed are cells or non-human animals comprising the vector, and use of the cells or non-human animals.Type: GrantFiled: December 18, 2014Date of Patent: October 3, 2017Assignees: National University Corporation Tottori University, Trans Chromosomics, Inc.Inventors: Mitsuo Oshimura, Yasuhiro Kazuki, Masato Takiguchi, Takashi Matsuoka
-
Publication number: 20150096063Abstract: Disclosed is a mouse artificial chromosome vector, comprising: a natural centromere derived from a mouse chromosome; a mouse-chromosome-derived long-arm fragment formed by deleting a long-arm distal region at a mouse chromosome long-arm site proximal to the centromere; and a telomere sequence, wherein the vector is stably retained in a cell and/or tissue of a mammal. In addition, disclosed are cells or non-human animals comprising the vector, and use of the cells or non-human animals.Type: ApplicationFiled: December 18, 2014Publication date: April 2, 2015Applicants: NATIONAL UNIVERSITY CORPORATION TOTTORI UNIVERSITY, CHROMOCENTER INC.Inventors: Mitsuo Oshimura, Yasuhiro Kazuki, Masato Takiguchi, Takashi Matsuoka
-
Patent number: 8940533Abstract: Disclosed is a mouse artificial chromosome vector, comprising: a natural centromere derived from a mouse chromosome; a mouse-chromosome-derived long-arm fragment formed by deleting a long-arm distal region at a mouse chromosome long-arm site proximal to the centromere; and a telomere sequence, wherein the vector is stably retained in a cell and/or tissue of a mammal. In addition, disclosed are cells or non-human animals comprising the vector, and use of the cells or non-human animals.Type: GrantFiled: January 6, 2011Date of Patent: January 27, 2015Assignees: National University Corporation Tottori University, Chromocenter Inc.Inventors: Mitsuo Oshimura, Yasuhiro Kazuki, Masato Takiguchi, Takashi Matsuoka
-
Publication number: 20120272342Abstract: Disclosed is a mouse artificial chromosome vector, comprising: a natural centromere derived from a mouse chromosome; a mouse-chromosome-derived long-arm fragment formed by deleting a long-arm distal region at a mouse chromosome long-arm site proximal to the centromere; and a telomere sequence, wherein the vector is stably retained in a cell and/or tissue of a mammal. In addition, disclosed are cells or non-human animals comprising the vector, and use of the cells or non-human animals.Type: ApplicationFiled: January 6, 2011Publication date: October 25, 2012Inventors: Mitsuo Oshimura, Yasuhiro Kazuki, Masato Takiguchi, Takashi Matsuoka
-
Patent number: 6688674Abstract: A compact vehicle production line. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: GrantFiled: September 28, 2001Date of Patent: February 10, 2004Assignee: Nissan Motor Co., Ltd.Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori
-
Patent number: 6668438Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: GrantFiled: September 28, 2001Date of Patent: December 30, 2003Assignee: Nissan Motor Co., Ltd.Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori
-
Publication number: 20020042996Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: ApplicationFiled: September 28, 2001Publication date: April 18, 2002Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori
-
Publication number: 20020014008Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: ApplicationFiled: September 28, 2001Publication date: February 7, 2002Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori
-
Patent number: 6334252Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: GrantFiled: December 10, 1999Date of Patent: January 1, 2002Assignee: Nissan Motor Co., Ltd.Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori