Patents by Inventor Ryosuke Hiramatsu
Ryosuke Hiramatsu 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: 7638934Abstract: A fluorescent substance is provided, with includes a matrix composed of a compound having an AlN polytypoid structure represented by the following general formula (1), and a luminescence center element: (Al,M)a(N,X)b??(1) wherein, M is at least one metal excluding Al, X is at least one non-metal excluding N, and a and b are positive values.Type: GrantFiled: May 31, 2006Date of Patent: December 29, 2009Assignees: Kabushiki Kaisha Toshiba, National University Corporation Yokohama National UniversityInventors: Yumi Fukuda, Masaaki Tamatani, Hironori Asai, Naotoshi Matsuda, Ryosuke Hiramatsu, Keiko Albessard, Jun-ichi Tatami, Katsutoshi Komeya, Tohru Wakihara
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Patent number: 7635438Abstract: A europium-activated alkaline earth orthosilicate luminescent material is provided, which includes a compound having a composition represented by a following formula 1: (SrxBayCazEuw)2SiO4??formula 1 wherein, x, y, z and w satisfy following relational expressions 2, and 4 to 7, and are values satisfying the expression 3 when a, b, c and d are assumed to be 573, 467, 623 and 736, respectively: x+y+z+w=1??expression 2 600?ax+by+cz+dw??expression 3 0?x/(1?w)?0.95??expression 4 0?y/(1?w)?0.4??expression 5 0<z/(1?w)?0.95??expression 6 0.02?w?0.2??expression 7 the luminescent material shows an emission band having a peak wavelength of 600 nm or more when the luminescent material is excited by ultraviolet radiation having a wavelength of 254 nm.Type: GrantFiled: July 18, 2007Date of Patent: December 22, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Lighting & Technology CorporationInventors: Masaaki Tamatani, Hisayo Uetake, Ryosuke Hiramatsu, Kazuaki Ootsuka, Yasushi Hattori, Naomi Shida
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Publication number: 20090285995Abstract: An field effect transistor includes a first semiconductor region, a gate electrode insulatively disposed over the first semiconductor region, source and drain electrodes between which the first semiconductor region is sandwiched, and second semiconductor regions each formed between the first semiconductor region and one of the source and drain electrodes, and having impurity concentration higher than that of the first semiconductor region, the source electrode being offset to the gate electrode in a direction in which the source electrode and the drain electrode are separated from each other with respect to a channel direction, and one of the second semiconductor regions having a thickness not more than a thickness with which the one of second semiconductor regions is completely depleted in the channel direction being in thermal equilibrium with the source electrode therewith.Type: ApplicationFiled: July 15, 2009Publication date: November 19, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.Inventors: Naomi Shida, Masaaki Tamatani, Yoshihito Tsutsui, Kazuaki Ootsuka, Ryosuke Hiramatsu
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Publication number: 20090267896Abstract: According to one embodiment, an input device includes: a sensor part configured to detect a hand-writing operation; an input recognition part configured to recognize a content from the writing operation detected by the sensor part; a storage part configured to store a conversion command database in which to associate the content with a command; and a conversion output part configured to output the command based on the conversion command database and the content.Type: ApplicationFiled: December 23, 2008Publication date: October 29, 2009Inventor: Ryosuke HIRAMATSU
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Patent number: 7601277Abstract: Disclosed is a fluorescent substance comprising an alkaline earth ortho-silicate, the fluorescent substance being activated by Eu2+, and further comprising at least one selected from the group consisting of La, Gd, Cs and K.Type: GrantFiled: January 31, 2008Date of Patent: October 13, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Naomi Shida, Masaaki Tamatani, Yoshihito Tsutsui, Kazuaki Ootsuka, Ryosuke Hiramatsu
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Patent number: 7572391Abstract: An field effect transistor includes a first semiconductor region, a gate electrode insulatively disposed over the first semiconductor region, source and drain electrodes between which the first semiconductor region is sandwiched, and second semiconductor regions each formed between the first semiconductor region and one of the source and drain electrodes, and having impurity concentration higher than that of the first semiconductor region, the source electrode being offset to the gate electrode in a direction in which the source electrode and the drain electrode are separated from each other with respect to a channel direction, and one of the second semiconductor regions having a thickness not more than a thickness with which the one of second semiconductor regions is completely depleted in the channel direction being in thermal equilibrium with the source electrode therewith.Type: GrantFiled: June 19, 2008Date of Patent: August 11, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., LtdInventors: Naomi Shida, Masaaki Tamatani, Yoshihito Tsutsui, Kazuaki Ootsuka, Ryosuke Hiramatsu
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Publication number: 20090189514Abstract: A lithium calcium silicate luminescent material is provided, which includes a tetragonal crystal phase containing Li, Ca, Si and O, and an activator containing Eu. The luminescent material exhibits a peak wavelength of emission spectrum falling within a wavelength region of 470 to 490 nm when excited by light having an emission peak falling within a wavelength region of 360 to 460 nm.Type: ApplicationFiled: February 18, 2009Publication date: July 30, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Ryosuke Hiramatsu, Naotoshi Matsuda
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Publication number: 20090189829Abstract: An information processing apparatus includes: a main unit having a flat boxed shape; a first display device that displays contents; a connecting portion that is configured to detachably attach and fix the main unit to another apparatus; a connection interface that communicates with the another apparatus; and a controller that operates to: determine whether the main unit is fixed to the another apparatus by the connecting portion in a manner covering a second display device that is provided in the another apparatus and that the main unit is positioned in a facing state where the first display device faces a user; control, when determined that the main unit covers the second display device of the another apparatus and that the main unit is positioned in the facing state, the another apparatus through the connection interface; and control the first display device to display given contents.Type: ApplicationFiled: January 12, 2009Publication date: July 30, 2009Applicant: Kabushiki Kaisha ToshibaInventors: Ryosuke HIRAMATSU, Keiichiro YAMAGUCHI
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Publication number: 20090127507Abstract: A luminescent material is provided, which includes a material formed of a single composition containing the main crystal phase and an activator which causes light emission. The material exhibits a narrowband light emission spectrum in a wavelength ranging from 540 nm to 550 nm and a broadband light emission spectrum in a wavelength ranging from 500 nm to 600 nm when the material is excited with light having the main light emission peak having a wavelength ranging from 370 nm to 460 nm.Type: ApplicationFiled: January 21, 2009Publication date: May 21, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Ryosuke Hiramatsu, Masaaki Tamatani, Hironori Asai, Kazuaki Ootsuka
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Publication number: 20090096361Abstract: A luminescent material which is featured in that it exhibits an emission peak at a wavelength ranging from 490 to 580 nm as it is excited by light having a wavelength ranging from 250 to 500 nm and that it has a composition represented by the following general formula (2): (M1-xRx)a2AlSib2Oc2Nd2??(2) (In the general formula (2), M is at least one metallic element excluding Si and Al, R is a luminescence center element, and x, a2, b2, c2 and d2 satisfy the following relationships: 0<x?1, 0.93<a2<1.3, 4.0<b2<5.8 0.6<c2<1, 6<d2<11).Type: ApplicationFiled: September 10, 2008Publication date: April 16, 2009Inventors: Yumi Fukuda, Masaaki Tamatani, Hironori Asai, Ryosuke Hiramatsu, Junichi Tatami, Katsutoshi Komeya, Toru Wakihara, Katsuko Tamatani
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Patent number: 7498736Abstract: A luminescent material is provided, which includes a material formed of a single composition containing the main crystal phase and an activator which causes light emission. The material exhibits a narrowband light emission spectrum in a wavelength ranging from 540 nm to 550 nm and a broadband light emission spectrum in a wavelength ranging from 500 nm to 600 nm when the material is excited with light having the main light emission peak having a wavelength ranging from 370 nm to 460 nm.Type: GrantFiled: January 23, 2007Date of Patent: March 3, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Ryosuke Hiramatsu, Masaaki Tamatani, Hironori Asai, Kazuaki Ootsuka
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Publication number: 20090023015Abstract: A luminescent material is provided, which comprises a crystalline phase including Y, Si, O and N, and an activator comprising Tb and Ce.Type: ApplicationFiled: January 29, 2008Publication date: January 22, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Ryosuke Hiramatsu
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Patent number: 7468147Abstract: Disclosed is a fluorescent substance comprising an alkaline earth ortho-silicate, the fluorescent substance being activated by Eu2+, and further comprising at least one selected from the group consisting of La, Gd, Cs and K.Type: GrantFiled: October 13, 2005Date of Patent: December 23, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Naomi Shida, Masaaki Tamatani, Yoshihito Tsutsui, Kazuaki Ootsuka, Ryosuke Hiramatsu
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Publication number: 20080283797Abstract: Disclosed is a fluorescent substance comprising an alkaline earth ortho-silicate, the fluorescent substance being activated by Eu2+, and further comprising at least one selected from the group consisting of La, Gd, Cs and K.Type: ApplicationFiled: January 31, 2008Publication date: November 20, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.Inventors: Naomi Shida, Masaaki Tamatani, Yoshihito Tsutsui, Kazuaki Ootsuka, Ryosuke Hiramatsu
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Publication number: 20080251765Abstract: An field effect transistor includes a first semiconductor region, a gate electrode insulatively disposed over the first semiconductor region, source and drain electrodes between which the first semiconductor region is sandwiched, and second semiconductor regions each formed between the first semiconductor region and one of the source and drain electrodes, and having impurity concentration higher than that of the first semiconductor region, the source electrode being offset to the gate electrode in a direction in which the source electrode and the drain electrode are separated from each other with respect to a channel direction, and one of the second semiconductor regions having a thickness not more than a thickness with which the one of second semiconductor regions is completely depleted in the channel direction being in thermal equilibrium with the source electrode therewith.Type: ApplicationFiled: June 19, 2008Publication date: October 16, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.Inventors: Naomi Shida, Masaaki Tamatani, Yoshihito Tsutsui, Kazuaki Ootsuka, Ryosuke Hiramatsu
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Publication number: 20080253952Abstract: Disclosed is a method for manufacturing a nitrogen-containing fluorescent substance comprising accommodating an oxide fluorescent substance containing two or more elements in a receptacle made of a material containing carbon, and sintering the oxide fluorescent substance in a mixed gas atmosphere containing nitrogen gas.Type: ApplicationFiled: June 20, 2008Publication date: October 16, 2008Inventors: Ryosuke Hiramatsu, Kazuaki Ootsuka, Naomi Shida, Masaaki Tamatani, Hisayo Uetake, Yoshihito Tsutsui
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Patent number: 7414272Abstract: Disclosed is a method for manufacturing a nitrogen-containing fluorescent substance comprising accommodating an oxide fluorescent substance containing two or more elements in a receptacle made of a material containing carbon, and sintering the oxide fluorescent substance in a mixed gas atmosphere containing nitrogen gas.Type: GrantFiled: July 13, 2005Date of Patent: August 19, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd., Toshiba Lighting & Technology CorporationInventors: Ryosuke Hiramatsu, Kazuaki Ootsuka, Naomi Shida, Masaaki Tamatani, Hisayo Uetake, Yoshihito Tsutsui
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Publication number: 20080185956Abstract: A luminescent material is provided, which includes a compound having a composition represented by the following general formula (A): (Sra1,Bab1,Cac1,Rev1,Euw1)2SiO4 ??(A) wherein, Re is at least one selected from a group consisting of Pr and Dy, and a1, b1, c1, v1 and w1 satisfy following relationships: a1+b1+c1+v1+w1=1, ??(1) 0?a1/(1?v1?w1)?1, ??(2) 0?b1/(1?v1?w1)?1, ??(3) 0?c1/(1?v1?w1)?1, ??(4) 0<v1?0.15, ??(5) 0<w1?0.02.Type: ApplicationFiled: July 6, 2007Publication date: August 7, 2008Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Ryosuke Hiramatsu
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Publication number: 20080018234Abstract: A luminescent material is provided, which includes a material formed of a single composition containing the main crystal phase and an activator which causes light emission. The material exhibits a narrowband light emission spectrum in a wavelength ranging from 540 nm to 550 nm and a broadband light emission spectrum in a wavelength ranging from 500 nm to 600 nm when the material is excited with light having the main light emission peak having a wavelength ranging from 370 nm to 460 nm.Type: ApplicationFiled: January 23, 2007Publication date: January 24, 2008Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Ryosuke Hiramatsu, Masaaki Tamatani, Hironori Asai, Kazuaki Ootsuka
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Publication number: 20080017831Abstract: A europium-activated alkaline earth orthosilicate luminescent material is provided, which includes a compound having a composition represented by a following formula 1: (Srx Bay Caz Euw)2SiO4??formula 1 wherein, x, y, z and w satisfy following relational expressions 2, and 4 to 7, and are values satisfying the expression 3 when a, b, c and d are assumed to be 573, 467, 623 and 736, respectively: x+y+z+w=1??expression 2 600?ax+by+cz+dw??expression 3 0?x/(1?w)?0.95??expression 4 0?y/(1?w)?0.4??expression 5 0<z/(1?w)?0.95??expression 6 0.02?w?0.2??expression 7 the luminescent material shows an emission band having a peak wavelength of 600 nm or more when the luminescent material is excited by ultraviolet radiation having a wavelength of 254 nm.Type: ApplicationFiled: July 18, 2007Publication date: January 24, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Masaaki Tamatani, Hisayo Uetake, Ryosuke Hiramatsu, Kazuaki Ootsuka, Yasushi Hattori, Naomi Shida