Patents by Inventor Tatsuo Ito

Tatsuo Ito 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: 20190326466
    Abstract: An optical semiconductor element includes a semiconductor substrate, a first laminated structure provided on a front surface of the semiconductor substrate, and a second laminated structure provided on the front surface of the semiconductor substrate, the first laminated structure includes a first quantum cascade region, the second laminated structure includes a dummy region having the same layer structure as the first quantum cascade region, a second quantum cascade region provided on the front surface of the semiconductor substrate via the dummy region, and one of the first quantum cascade region and the second quantum cascade region is a quantum cascade laser, and the other of the first quantum cascade region and the second quantum cascade region is a quantum cascade detector.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 24, 2019
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Masahiro HITAKA, Akio ITO, Tatsuo DOUGAKIUCHI, Kazuue FUJITA, Tadataka EDAMURA
  • Patent number: 10450672
    Abstract: The object is to produce with good reproducibility an epitaxial silicon carbide wafer having a high quality silicon carbide single crystal thin film with little step bunching. To achieve this object, for etching the silicon carbide single crystal substrate in the epitaxial growth furnace, hydrogen carrier gas and silicon-based material gas are used. After the etching treatment is finished as well, the epitaxial growth conditions are changed in the state in the state supplying these gases. When the conditions stabilize, a carbon-based material gas is introduced for epitaxial growth.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: October 22, 2019
    Assignee: SHOWA DENKO K.K.
    Inventors: Takashi Aigo, Wataru Ito, Tatsuo Fujimoto
  • Patent number: 10435813
    Abstract: The present invention provides a method of epitaxial growth of an SiC thin film by the thermal CVD process wherein it is possible to improve the in-plane uniformity of the doping density and possible to grow an SiC thin film by a uniform thickness. This method is an epitaxial growth method for silicon carbide characterized by comprising adjusting a ratio of the hydrocarbon gas and silicon feedstock gas so as to become, by C/Si ratio, 0.5 to 1.5 in range, making the hydrocarbon gas contact a hydrocarbon decomposition catalyst heated to 1000° C. to 1200° C. so as to make at least part of the hydrocarbon gas break down into carbon and hydrogen, and supplying carbon contained in the hydrocarbon gas and silicon contained in the silicon feedstock gas to the silicon carbide single crystal substrate.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: October 8, 2019
    Assignee: SHOWA DENKO K.K.
    Inventors: Wataru Ito, Takashi Aigo, Tatsuo Fujimoto
  • Patent number: 10439363
    Abstract: A method of manufacturing a quantum cascade laser beam source (1) includes: preparing a semiconductor stacked body (20); forming a pair of first excavated portions (41 and 42) and a ridge portion which is interposed between the pair of first excavated portions (41 and 42); forming channel structures (51 and 52) and circumferential edge portions (61 and 62) which are formed to interpose the channel structures (51 and 52) between the ridge portion (30) and the circumferential edge portion; forming an electrode pattern (81) in contact with a first area (29a) and forming an electrode pattern (82) in contact with a second area (22a); fixing a crystal growth surface side to a support substrate (91); removing an Fe-doped (semi-insulating) InP single-crystal substrate (21); fixing a Si substrate (93); and peeling the support substrate (91).
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: October 8, 2019
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Akio Ito, Kazuue Fujita, Daisuke Kawaguchi, Tatsuo Dougakiuchi, Tadataka Edamura
  • Publication number: 20190296146
    Abstract: A semiconductor device of an embodiment includes a silicon carbide layer; a gate electrode; a gate insulating layer disposed between the silicon carbide layer and the gate electrode; a first region disposed in the silicon carbide layer and containing nitrogen (N); and a second region disposed between the first region and the gate insulating layer, and containing at least one element selected from the group consisting of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), scandium (Sc), yttrium (Y), lanthanum (La), lanthanoids (Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu), hydrogen (H), deuterium (D), and fluorine (F).
    Type: Application
    Filed: August 27, 2018
    Publication date: September 26, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tatsuo SHIMIZU, Ryosuke IIJIMA, Toshihide ITO, Shunsuke ASABA, Yukio NAKABAYASHI, Shigeto FUKATSU
  • Patent number: 10406733
    Abstract: A film in which a decorative design layer is formed on a base film is positioned and locked relative to a cavity mold while the mold is open. A pressing portion includes a tip portion made of a soft material. The tip portion pushes the film toward the cavity mold and presses the film against a portion of the molding surface. In this state, vacuum suction causes the film to stick to the molding surface. After that, an article body is molded by injecting molten plastic into the cavity while the mold is clamped. The obtained decorative molded article includes the decorative design layer that decorates the design surface of the article body by causing the decorative design layer of the film to stick to the design surface of the article body.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: September 10, 2019
    Assignee: TOYODA GOSEI CO., LTD.
    Inventor: Tatsuo Ito
  • Publication number: 20190185656
    Abstract: A curable composition contains a resin containing a curable group, a colorant, a polymerization inhibitor, and a polymerization initiator. A manufacturing method of the curable composition includes a colorant dispersing step of mixing together the resin containing a curable group, the colorant, and the polymerization inhibitor and a mixing step of mixing together the colorant dispersion and the polymerization initiator so as to obtain the curable composition. A cured film is obtained by curing the curable composition. A color filter, a solid-state imaging element, and an infrared sensor have the cured film. A manufacturing method of the cured film includes a curable composition layer-forming step, an exposure step, and a development step.
    Type: Application
    Filed: February 22, 2019
    Publication date: June 20, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Michihiro Ogawa, Yutaro Fukami, Junichi Ito, Yushi Kaneko, Hiroaki Idei, Daisuke Hamada, Tatsuo Ishikawa
  • Publication number: 20190116718
    Abstract: A lifting control device includes: a position acquisition portion configured to acquire an extended or contracted position of the hydraulic cylinder; a target setting portion configured to set a target position of the hydraulic cylinder; a control portion configured to control an energized amount of the solenoid valve; and an input judging portion configured to judge whether the operational input is an opening command to perform an opening control in which the solenoid valve is made to be fully open or is a positional control command to perform a positional control in which the solenoid valve is actuated according to an operation input amount to control the extended or contracted position of the hydraulic cylinder, wherein when the operational input is judged as the opening command by the input judging portion, the opening control is performed due to the non-integral type control by the control portion.
    Type: Application
    Filed: January 27, 2017
    Publication date: April 25, 2019
    Applicant: KYB Corporation
    Inventors: Tatsuo ITO, Tooru MATSUURA
  • Publication number: 20190024678
    Abstract: A control device for a fluid pressure actuator includes a first valve controlling a flow of working oil supplied to or discharged from a hydraulic cylinder, a regulation determining portion determining whether to increase or decrease an energization amount to the first valve on the basis of a position deviation between an actual position and a target position of the hydraulic cylinder, a first proportional gain output portion deciding a command current value to be applied to the first valve on the basis of the position deviation, and an offset current output portion setting an offset current value to be applied to the first valve on the basis of a judgment result of the regulation determining portion. The offset current output portion sets a first current value as the offset current value in a valve closing process, and sets a second current value greater than the first current value as the offset current value in a valve opening process.
    Type: Application
    Filed: September 20, 2016
    Publication date: January 24, 2019
    Applicant: KYB Corporation
    Inventor: Tatsuo ITO
  • Patent number: 10124518
    Abstract: A method for manufacturing a decorative molded article includes first to fourth steps. In the first step, a plastic sheet is secured to a cavity block in a state in which first and second portions are arranged along an open end of a molding recess. The plastic sheet is tightly held by the cavity block and a securing member at the first portions and is not tightly held at the second portions. In the second step, the plastic sheet is deformed. In the third step, the plastic sheet is secured to the cavity block in a state in which the plastic sheet is tightly held by the cavity block and the securing member over the entire periphery of the opening of the molding recess. In the fourth step, the plastic sheet is molded by being caused to closely contact the molding surface of the cavity block through vacuum suction.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: November 13, 2018
    Assignees: TOYODA GOSEI CO., LTD., NISSHA PRINTING CO., LTD.
    Inventors: Tatsuo Ito, Takafumi Matsui
  • Publication number: 20180281362
    Abstract: To provide a decorative panel that expresses a deep jet-black color represented by Japanese lacquer or the like. Provided are: a base member; a black-colored layer provided on the base member; and a laminate provided on the black-colored layer, the laminate having a plurality of transparent layers having different refractive indexes such that the plurality of transparent layers are layered. The refractive indexes of the transparent layers in the laminate are increased in order toward the base member.
    Type: Application
    Filed: January 11, 2018
    Publication date: October 4, 2018
    Inventors: Sadanori ANDO, Chiharu TOTANI, Tatsuo ITO, Hiroshi IWATA
  • Patent number: 9950493
    Abstract: A decorative film includes a dark-colored opaque substrate, which includes a surface that includes an uneven section, and a transparent decorative layer, which is stacked on the surface of the opaque substrate and closely contacts the uneven section. The uneven section includes ridges and grooves, which are located between the ridges. The ridges extend in directions of the same tendency, and the grooves extend in directions of the same tendency as the ridges. A minute uneven section formed in the top surface of each ridge includes minute ridges and minute grooves, which are located between the minute ridges. The minute ridges extend in directions of the same tendency and have a narrower width than the ridges and the grooves, and the minute grooves extend in directions of the same tendency as the minute ridges and have a narrower width than the ridges and the grooves.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: April 24, 2018
    Assignees: TOYODA GOSEI CO., LTD., NISSHA PRINTING CO., LTD.
    Inventors: Etsuo Ozawa, Tatsuo Ito, Ryouki Kubomoto
  • Patent number: 9714606
    Abstract: Disclosed is a vehicle power generating apparatus which comprises: a generator; a rotary engine configured to serve as an engine for driving the generator, and installed in the vehicle in a posture where an output shaft thereof extends in an up-down direction; and an intake pipe and an exhaust pipe each connected to the rotary engine. The rotary engine comprises a pair of upper and lower side housings, and a rotor housing located between the upper and lower side housings. the rotor housing and the lower side housing are formed with an intake port and an exhaust port, respectively. The intake pipe is connected to a side surface of the rotor housing in such a manner as to be communicated with the intake port, and the exhaust pipe is connected to the lower side housing in such a manner as to be communicated with the exhaust port.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: July 25, 2017
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Masanao Yamada, Tatsuo Ito, Yoshinori Ogata, Hirotaka Tamari
  • Patent number: 9699195
    Abstract: A license management device includes a license identifier generator unit generating a license identifier and license information corresponding to a group of application programs, the license identifier associated with a group identifier of the group and the license information on the group, a group information storage unit storing the group identifier with a product identifier of each application program, a license information storage unit recording the license identifier corresponding to the group identifier with the product identifier of the application program, a determination unit determining, on receiving the license identifier associated with the application program, whether the received license identifier is recorded in the license information storage unit, and a sending unit sending via a network, if the received license identifier is recorded in the license information storage unit, a license file corresponding to the recorded license identifier to provide a permission to use the application program
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: July 4, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Tatsuo Ito
  • Patent number: 9683587
    Abstract: A fluid pressure control device includes a first control valve that switches to supply a working fluid to the pressure chamber of a cylinder on which a load pressure by the load acts so as to control the extension operation of the cylinder, a second control valve that switches to discharge the working fluid in the pressure chamber so as to control the contraction operation of the cylinder, an operate check valve that is interposed between the pressure chamber and the second control valve and that interrupts the discharge of the working fluid from the pressure chamber when the operate check valve is switched to a closed state and a pilot valve that performs, with a pilot pressure, a pilot operation on the second control valve and that switches, with the pilot pressure, the operate check valve to an opened state.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: June 20, 2017
    Assignee: KYB Corporation
    Inventors: Tatsuo Ito, Mitsuhiro Maesaki
  • Publication number: 20170164599
    Abstract: A boom damping device includes a fluid pressure cylinder configured to perform an expansion/contraction operation in conjunction with rotational movement of a boom in a roll direction of a working vehicle, a first pressure accumulator into/out of which an operating fluid flows through a first passage with the expansion/contraction operation of the fluid pressure cylinder, a second pressure accumulator into/out of which the operating fluid flows through a second passage with the expansion/contraction operation of the fluid pressure cylinder, and a shut-off switch configured to shut off the first passage and configured to shut off the second passage if at least either one of a right boom and a left boom is not at a working position expanded in a right-and-left direction of the working vehicle.
    Type: Application
    Filed: October 17, 2014
    Publication date: June 15, 2017
    Applicant: KYB Corporation
    Inventors: Tatsuo ITO, Takanori INADA, Takanobu YOSHIDA, Tomomichi MIZUKAMI, Atsushi OOTA, Masaki AKASHI, Yasuo TANAKA, Hiroki TOKUDA
  • Publication number: 20170072607
    Abstract: A method for manufacturing a decorative molded article includes first to fourth steps. In the first step, a plastic sheet is secured to a cavity block in a state in which first and second portions are arranged along an open end of a molding recess. The plastic sheet is tightly held by the cavity block and a securing member at the first portions and is not tightly held at the second portions. In the second step, the plastic sheet is deformed. In the third step, the plastic sheet is secured to the cavity block in a state in which the plastic sheet is tightly held by the cavity block and the securing member over the entire periphery of the opening of the molding recess. In the fourth step, the plastic sheet is molded by being caused to closely contact the molding surface of the cavity block through vacuum suction.
    Type: Application
    Filed: August 23, 2016
    Publication date: March 16, 2017
    Inventors: Tatsuo ITO, Takafumi MATSUI
  • Publication number: 20160318221
    Abstract: A film in which a decorative design layer is formed on a base film is positioned and locked relative to a cavity mold while the mold is open. A pressing portion includes a tip portion made of a soft material. The tip portion pushes the film toward the cavity mold and presses the film against a portion of the molding surface. In this state, vacuum suction causes the film to stick to the molding surface. After that, an article body is molded by injecting molten plastic into the cavity while the mold is clamped. The obtained decorative molded article includes the decorative design layer that decorates the design surface of the article body by causing the decorative design layer of the film to stick to the design surface of the article body.
    Type: Application
    Filed: March 9, 2016
    Publication date: November 3, 2016
    Inventor: Tatsuo ITO
  • Patent number: 9427910
    Abstract: Provided is a manufacturing method that is able to manufacture a design member superior in a design property. In a manufacturing method of a design member for transferring a decorative layer onto a design surface of a base body, the manufacturing method provides a recessed parting groove that is formed in at least a part of a border between a general surface and the design surface, arranges the base body in a chamber having a gas pressure adjusting device, places a transfer film on the design surface of the base body, and, with changing a gas pressure in the chamber by the gas pressure adjusting device to crimp the transfer film onto the design surface, presses the transfer film against the design surface under a heated state by a three-dimensional transferring tool made of an elastic body.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: August 30, 2016
    Assignee: TOYODA GOSEI CO., LTD
    Inventors: Sadanori Ando, Tatsuo Ito
  • Publication number: 20160101589
    Abstract: A decorative film includes a dark-colored opaque substrate, which includes a surface that includes an uneven section, and a transparent decorative layer, which is stacked on the surface of the opaque substrate and closely contacts the uneven section. The uneven section includes ridges and grooves, which are located between the ridges. The ridges extend in directions of the same tendency, and the grooves extend in directions of the same tendency as the ridges. A minute uneven section formed in the top surface of each ridge includes minute ridges and minute grooves, which are located between the minute ridges. The minute ridges extend in directions of the same tendency and have a narrower width than the ridges and the grooves, and the minute grooves extend in directions of the same tendency as the minute ridges and have a narrower width than the ridges and the grooves.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 14, 2016
    Inventors: Etsuo OZAWA, Tatsuo ITO, Ryouki KUBOMOTO