Patents by Inventor Tatsuya Takahashi

Tatsuya Takahashi 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).

  • Patent number: 9604432
    Abstract: The invention is to provide a coating structure material excellent in Mg corrosion resistance, which has resistance to corrosion caused by molten Mg and molten Mg alloys. The invention relates to a coating structure material including an Ni—Co-base alloy substrate and a Co-base alloy coating layer formed on the Ni—Co-base alloy substrate, wherein the Co-base alloy coating layer contains, in terms of % by mass, Ni: 20% or less, Co: 42% or more, Si: 2.8% or less, and Fe: 3.5% or less.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: March 28, 2017
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Kouichi Takasawa, Eiji Maeda, Shinji Tanaka, Tatsuya Takahashi
  • Patent number: 9594296
    Abstract: An illumination device includes an excitation light source which emits excitation light, a wavelength converter which generates fluorescent light having a wavelength different from that of the excitation light through the excitation of the excitation light and a light path-splitting member including a first filter and a second filter arranged to alternately come across a light path of the excitation light, wherein the first filter reflects one of the excitation light and the fluorescent light and transmits the other of the excitation light and the fluorescent light, the second filter transmits light reflected by the first filter and reflects light transmitted through the first filter, and the wavelength converter is disposed in a reflection light path or a transmission light path of the excitation light.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: March 14, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kazuhiro Fujita, Tatsuya Takahashi, Toshiharu Murai, Ikuo Maeda, Takehiro Nishimori
  • Patent number: 9590249
    Abstract: An object is to improve characteristics of a power storage device. The present invention relates to an electricity storage device comprising a current collector and a negative electrode-active material layer formed over the current collector. The negative electrode-active material layer includes a negative electrode comprising a first negative electrode layer in contact with the current collector; a second negative electrode layer in contact with the first negative electrode layer, having a smaller capacitance than the first negative electrode layer and containing one material selected from a nitride of lithium and a transition metal represented by LiaMbNz (M is a transition metal, 0.1?a?2.8, 0.2?b?1 and 0.6?z?1.4), a silicon material, and lithium titanate; a positive electrode that is paired with the negative electrode; and a solid electrolyte interposed between the positive electrode and the negative electrode.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: March 7, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tamae Moriwaka, Tatsuya Takahashi
  • Patent number: 9557631
    Abstract: A light source unit includes a light emitting element supporter to support a plurality of light emitting elements disposed with a dispersed pattern in a two-dimensional direction as a light emitting element assembly, and light emitted from the light emitting element assembly exits to a target; a light return member disposed at a position facing a light emitting side of the light emitting element assembly while setting a space with the light emitting element supporter, the light return member returning light emitted from the light emitting element assembly toward at an inner side of two dimensional direction of the light emitting element assembly, and a flow path of the cooling air to pass through cooling air supplied from an air supply unit into the space.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: January 31, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takehiro Nishimori, Kazuhiro Fujita, Toshiharu Murai, Ikuo Maeda, Tatsuya Takahashi
  • Publication number: 20160377969
    Abstract: A light source device includes a light source section that emits laser beam, a member reducing light quantity unevenness of the laser beam, a diffusion member that is provided in a traveling optical path of the laser beam between the light source section and the member reducing light quantity unevenness and diffuses the laser beam, a detection element that detects a physical characteristic of the diffusion member and outputs a state detecting signal, and an abnormal state determiner that determines an abnormal state of the diffusion member based on the state detecting signal.
    Type: Application
    Filed: September 13, 2016
    Publication date: December 29, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Takehiro NISHIMORI, Kazuhiro FUJITA, Toshiharu MURAI, Tatsuya TAKAHASHI
  • Publication number: 20160349606
    Abstract: A light irradiation device for emitting light of two or more components by laser light, which a laser light source emits, to an outside, includes a diffusion optical path change member configured to convert a first color component of the laser light into diffusion light and change an optical path of the first color component; a phosphor configured to generate fluorescence of a second color component different from the first color component based on the laser light, and change an optical path of the second color component; and an optical path switch member configured to switch between a first optical path for emitting the first color component to the outside and a second optical path for emitting the second color component to the outside. Light going straight at a light diffusion position of the diffusion optical path change member is not emitted to the outside.
    Type: Application
    Filed: August 10, 2016
    Publication date: December 1, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Takehiro NISHIMORI, Kazuhiro FUJITA, Toshiharu MURAI, Tatsuya TAKAHASHI, Junichi KITABAYASHI, Kaoru ITOH, Makoto HIRAKAWA
  • Publication number: 20160320692
    Abstract: An illumination light source device includes a reflection-transmission wheel provided on a light-path from an excitation light source and having a transmission region that transmits an excitation light and a reflection region reflecting the excitation light, a fluorescent wheel provided on at least one of the reflection light-path and the transmission light-path and having a fluorescent body emitting fluorescence when excited by the excitation light, and a control section turning-on the excitation light source while the boundary of the transmission region and the reflection region traverses the light-path, in order to provide an illumination light source device capable of preventing a deterioration of the fluorescent body, whereby improving a color reproducibility by use of the color mixture occurred at the boundary region between the transmission light-path and the reflection light-path effectively and improving the brightness of image.
    Type: Application
    Filed: June 15, 2016
    Publication date: November 3, 2016
    Inventors: Tatsuya TAKAHASHI, Kazuhiro FUJITA, Toshiharu MURAI, lkuo MAEDA, Takehiro NISHIMORI
  • Publication number: 20160313241
    Abstract: This calorie measurement device is provided with the following: a light-emission unit that exposes a food article to light that contains near-infrared wavelengths; a light-reception unit that receives transmitted light that had passed through the food article and/or reflected light that was reflected by the food article; a correction unit that computes a base absorbance for the food article on the basis of the transmitted and/or reflected light and corrects the light intensity measured by the light-reception unit and/or the computed base absorbance on the basis of affecting factors, said affecting factors being those that affect the absorption and reflection of light by the food article but are essentially unaffected by the light-absorption and light-reflection properties of the components of the food article; and an analysis unit that computes an analysis value indicating the caloric content of the food article on the basis of the corrected light intensity measured by the light-reception unit and/or the corr
    Type: Application
    Filed: December 2, 2014
    Publication date: October 27, 2016
    Inventors: Kazuhiro OCHI, Tatsuya TAKAHASHI
  • Publication number: 20160313238
    Abstract: This food-article analysis device is provided with a light-reception/detection unit that receives near-infrared light reflected off of at least one measurement region of a measurement target and/or near-infrared light that has passed through at least one measurement region of said measurement target and generates a signal corresponding to the intensity of the received light, a computation unit that computes sectional nutrition information containing information regarding the caloric content of at least one measurement region and/or information regarding the components thereof on the basis of the signal supplied by the light-reception/detection unit and generates a distribution image by combining a plurality of pieces of sectional nutrition information relating to a plurality of measurement regions with position information for said measurement regions, and a display unit that displays the distribution image supplied by the computation unit.
    Type: Application
    Filed: November 26, 2014
    Publication date: October 27, 2016
    Inventors: Kazuhiro OCHI, Tatsuya TAKAHASHI
  • Patent number: 9442352
    Abstract: A light source device includes: a first light emitting unit including a light emitting element that emits light having a predetermined wavelength range; a second light emitting unit including a wavelength conversion member that receives the light from the light emitting element and emits light having a different wavelength range different than the predetermined wavelength range; an optical unit configured to define a path of the light emitted from the light emitting element and a path of the light emitted from the wavelength conversion member; an air blowing unit configured to generate a cooling air; and a passage forming member configured to form a passage through which the cooling air flows, the passage being in contact with both of the first light emitting unit and the second light emitting unit.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: September 13, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Takehiro Nishimori, Kazuhiro Fujita, Toshiharu Murai, Tatsuya Takahashi
  • Patent number: 9435023
    Abstract: Provided are a method for producing a Cu—Ga alloy powder, by which a high quality Cu—Ga alloy powder to be produced readily; a Cu—Ga alloy powder; a method for producing a Cu—Ga alloy sputtering target; and a Cu—Ga alloy sputtering target. Specifically, a Cu—Ga alloy powder is produced by stirring a mixed powder containing a Cu powder and a Ga in a mass ratio of 85:15 to 55:45 at a temperature of 30 to 700° C. in an inert atmosphere thereby accomplishing alloying. Also a Cu—Ga alloy sputtering target is produced by molding the Cu—Ga alloy powder followed by sintering.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: September 6, 2016
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Toshio Morimoto, Tatsuya Takahashi, Isao Ando, Tetsufumi Komukai, Masanori Takagi, Eriko Sato, Hirotaka Minami
  • Patent number: 9417511
    Abstract: A lighting device includes a first light source which emits excitation light, a wavelength convertor which generates fluorescence containing at least a first wavelength range and a second wavelength range by excitation with the excitation light, a second light source which emits light containing a third wavelength range different from the first wavelength range and the second wavelength range, an optical path-combining element which combines an optical path for the fluorescence from the wavelength convertor and an optical path for the light from the second light source, so as to guide the combined optical paths to a single emission optical path, and a light separator disposed in the emission optical path, which obtains and emits at least the first wavelength range and the second wavelength range of the fluorescence and at least the third wavelength range of the light from the second light source.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: August 16, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Issei Abe
  • Publication number: 20160223892
    Abstract: A light source device is disclosed. An embodiment of the light source device includes: an excitation light source configured to emit irradiation light of a color component to be used as excitation light and projection light; a fluorescent member disposed in an excitation light path and configured to generate fluorescence of a color component different from the color component of the irradiation light when being irradiated with the irradiation light; a light path merger unit configured to merge a fluorescence light path through which the fluorescence generated with irradiation of the irradiation light is delivered, and a projection light path through which the projection light is delivered; and a light path switch disk configured to switch the irradiation light between the excitation light path and the projection light path.
    Type: Application
    Filed: October 23, 2014
    Publication date: August 4, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Tatsuya TAKAHASHI, Kazuhiro FUJITA, Toshiharu MURAI, Takehiro NISHIMORI
  • Patent number: 9400416
    Abstract: An illumination light source device includes a reflection-transmission wheel provided on a light-path from an excitation light source and having a transmission region that transmits an excitation light and a reflection region reflecting the excitation light, a fluorescent wheel provided on at least one of the reflection light-path and the transmission light-path and having a fluorescent body emitting fluorescence when excited by the excitation light, and a control section turning-on the excitation light source while the boundary of the transmission region and the reflection region traverses the light-path, in order to provide an illumination light source device capable of preventing a deterioration of the fluorescent body, whereby improving a color reproducibility by use of the color mixture occurred at the boundary region between the transmission light-path and the reflection light-path effectively and improving the brightness of image.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: July 26, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Toshiharu Murai, Ikuo Maeda, Takehiro Nishimori
  • Patent number: 9354498
    Abstract: A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system disposed between the first reflector and the second reflector. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position. The light condensing optical system is configured such that the light beam passes through the light condensing optical system at least two times when the light beams reflect between the first reflector and the second reflector.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: May 31, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tatsuya Takahashi, Takanobu Osaka, Naoki Nakamura, Kazuhiro Fujita, Takehiro Nishimori
  • Patent number: 9348200
    Abstract: A light source unit emitting a light on an optical axis includes a first light emitter to emit a light in a certain wavelength band, a second light emitter to emit a light in a wavelength band different from that of the first light emitter, a third light emitter to emit a light in a wavelength band different from those of the first and second light emitters, a lighting path through which the lights from the first, second, and third light emitters are guided to propagate on the optical axis and into which the light from the third light emitter is joined at a hindmost position in a traveling direction on the optical axis, and an optical adjuster to exert an optical effect on the light from the third light emitter and not to exert an optical effect on the light rays from the first and second light emitters.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: May 24, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Toshiharu Murai, Takehiro Nishimori, Ikuo Maeda
  • Publication number: 20160118417
    Abstract: An aperture ratio of a semiconductor device is improved. A driver circuit and a pixel are provided over one substrate, and a first thin film transistor in the driver circuit and a second thin film transistor in the pixel each include a gate electrode layer, a gate insulating layer over the gate electrode layer, an oxide semiconductor layer over the gate insulating layer, source and drain electrode layers over the oxide semiconductor layer, and an oxide insulating layer in contact with part of the oxide semiconductor layer over the gate insulating layer, the oxide semiconductor layer, and the source and drain electrode layers. The gate electrode layer, the gate insulating layer, the oxide semiconductor layer, the source and drain electrode layers, and the oxide insulating layer of the second thin film transistor each have a light-transmitting property.
    Type: Application
    Filed: December 31, 2015
    Publication date: April 28, 2016
    Inventors: Shunpei Yamazaki, Junichiro Sakata, Hiroyuki Miyake, Hideaki Kuwabara, Tatsuya Takahashi
  • Publication number: 20160109221
    Abstract: An illumination apparatus includes: a light emitting unit that outputs light; a light condensing unit that condenses the light output from the light emitting unit; a diffusion unit that diffuses the light condensed by the light condensing unit; and a uniformizing optical system that receives the light diffused by the diffusion unit, uniformizes a brightness distribution thereof compared with that of the light being received, and outputs the resulting light.
    Type: Application
    Filed: October 9, 2015
    Publication date: April 21, 2016
    Inventors: Tatsuya TAKAHASHI, Kazuhiro Fujita, Toshiharu Murai, Takehiro Nishimori, Takahiro Kado, Jun Kishiwada
  • Publication number: 20160103387
    Abstract: A light source device includes a light source section that emits laser light, a reflection and diffusion member that diffuses and reflects the laser light emitted from the light source section, and a cooler that cools the reflection and diffusion member. The cooler includes at least one of an axial fan, an electronic cooling element, and a heat pipe.
    Type: Application
    Filed: October 2, 2015
    Publication date: April 14, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Takehiro NISHIMORI, Kazuhiro FUJITA, Toshiharu MURAI, Tatsuya TAKAHASHI, Takahiro KADO
  • Patent number: 9296825
    Abstract: Provided is a monoclonal antibody or a fragment thereof that selectively inhibits enzyme activity of EL and pharmaceutical compositions containing the same as an active ingredient useful for the treatment of arteriosclerosis or metabolic syndrome.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: March 29, 2016
    Assignee: SHIONOGI & CO., LTD.
    Inventors: Shoichi Naito, Junji Onoda, Tasuku Tsukamoto, Katsutoshi Yamada, Shoji Yamane, Yoshito Numata, Kazuhiko Maekawa, Tatsuya Takahashi, Yasuhiko Sato