Patents by Inventor Koji Ishizuka

Koji Ishizuka 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: 10594110
    Abstract: A vertical cavity surface emitting laser includes: a supporting base having a principal surface including III-V compound semiconductor containing gallium and arsenic as constituent elements; and a post disposed on the principal surface. The post has a lower spacer region including a III-V compound semiconductor containing gallium and arsenic as group-III elements, and an active layer having a quantum well structure disposed on the lower spacer region. The quantum well structure has a concentration of carbon in a range of 2×1016 cm?3 or more to 5×1016 cm?3 or less. The quantum well structure includes a well layer and a barrier layer. The well layer includes a III-V compound semiconductor containing indium as a group-III element, and the barrier layer includes a III-V compound semiconductor containing indium and aluminum as group-III elements. The lower spacer region is disposed between the supporting base and the active layer.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: March 17, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kei Fujii, Toshiyuki Tanahashi, Takashi Ishizuka, Susumu Yoshimoto, Takamichi Sumitomo, Koji Nishizuka, Suguru Arikata
  • Patent number: 10425618
    Abstract: Methods and apparatus provide for: displaying a program guide on a display device, the program guide being such that respective program frames for a plurality of programs are arranged in a display area having a time axis of one or more time slots and a channel axis; displaying a cursor on the display device and allowing a user to move the cursor, highlight desired ones of the program frames, and select from among the plurality of programs in the program guide; and displaying detailed program information regarding content of one of the programs of one of the program frames that is highlighted and/or selected by the user via the cursor, where the detailed information is displayed by enlarging the one of the program frames as compared with others of the program frames.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: September 24, 2019
    Assignee: Sony Interactive Entertainment Inc.
    Inventors: Manabu Nishizawa, Yuki Kobayashi, Kensaku Ishizuka, Koji Kanai
  • Patent number: 10372053
    Abstract: Provided is a recorded material in which a recording liquid is satisfactorily fixed to a recording medium and which has a sufficient chroma and a sufficient lightness, in high-speed printing. The recorded material comprises a recording medium, a toner particle including colorant particles, and a cured resin including the toner particle and fixing a toner image formed of the toner particle onto the recording medium, wherein an average circularity of the toner particle is not less than 0.70 and not more than 0.99, the toner particle is not exposed from a surface of the cured resin, and an average distance between wall surfaces of the adjacent toner particles is not less than 10 nm and less than 125 nm.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 6, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toru Kabashima, Shuhei Takahashi, Shuichi Tamura, Shinichirou Yoshikawa, Toshihiko Sugimoto, Erito Machida, Junji Ito, Jiro Ishizuka, Yuji Nakayama, Koji Amemiya
  • Publication number: 20190216971
    Abstract: A material for adhesion prevention can be adhered to biological tissue with certainty and has improved tissue adhesiveness and biodegradability. Such material for adhesion prevention is composed of: a 1- to 1,000-?m-thick water-soluble support layer comprising a water-soluble polymer; and a 1- to 1,000-?m-thick adhesion prevention layer comprising a biodegradable polymer. The biodegradable polymer has a structure in which a branched polyalkylene glycol comprising 3 to 8 terminal hydroxyl groups per molecule is bound to a polyhydroxy alkanoic acid, and a mass ratio of the branched polyalkylene glycol relative to the total mass is 1% to 30%.
    Type: Application
    Filed: September 29, 2017
    Publication date: July 18, 2019
    Inventors: Akihiro Saito, Megumi Nakanishi, Kazuhiro Tanahashi, Toru Arakane, Motonori Hochi, Ai Suzuki, Koji Okabayashi, Shinji Takeoka, Toshinori Fujie, Yuya Ishizuka, Shinya Ohtsubo
  • Publication number: 20190148914
    Abstract: A vertical cavity surface emitting laser includes: a supporting base having a principal surface including III-V compound semiconductor containing gallium and arsenic as constituent elements; and a post disposed on the principal surface. The post has a lower spacer region including a III-V compound semiconductor containing gallium and arsenic as group-III elements, and an active layer having a quantum well structure disposed on the lower spacer region. The quantum well structure has a concentration of carbon in a range of 2×1016 cm?3 or more to 5×1016 cm?3 or less. The quantum well structure includes a well layer and a barrier layer. The well layer includes a III-V compound semiconductor containing indium as a group-III element, and the barrier layer includes a III-V compound semiconductor containing indium and aluminum as group-III elements. The lower spacer region is disposed between the supporting base and the active layer.
    Type: Application
    Filed: November 13, 2018
    Publication date: May 16, 2019
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kei Fujii, Toshiyuki Tanahashi, Takashi Ishizuka, Susumu Yoshimoto, Takamichi Sumitomo, Koji Nishizuka, Suguru Arikata
  • Patent number: 9933581
    Abstract: An optical fiber splicer includes a fiber fixing portion, a first optical fiber fixed to the fiber fixing portion, a clamp portion which is capable of holding and fixing an extending portion extended from the fiber fixing portion of the first optical fiber and a tip portion of a second optical fiber optically connected to the extending portion of the first optical fiber between a base member and a pressing member being openable and closable with respect to the base member, and a solid index matching material which is attached to a tip surface of the extending portion of the first optical fiber and is interposed between the first optical fiber and the second optical fiber.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 3, 2018
    Assignees: FUJIKURA LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takaharu Matsuda, Hung Huu Luong, Tatsuya Ota, Kazuhiro Takizawa, Hiroichi Katayose, Koji Ishizuka, Makoto Shinpo, Kunihiro Toge
  • Patent number: 9743677
    Abstract: A wheat flour for deep-fried food crusts is obtained by subjecting a mixture including a wheat flour and from 0.05 to 0.5 parts by mass of an emulsifier with respect to 100 parts by mass of the wheat flour to a heating treatment for 1 to 20 seconds under a condition where the temperature of the mixture is from 65 to 99° C. The emulsifier is at least one type of emulsifier selected from sucrose fatty acid esters and lecithin. The blending ratio of the emulsifier is preferably from 0.1 to 0.45 parts by mass with respect to 100 parts by mass of the wheat flour. The wheat flour has an average grain size of preferably less than 100 ?m. A crust material for deep-fried foods including the aforementioned wheat flour for deep-fried food crusts, and a tempura flour including the aforementioned wheat flour for deep-fried food crusts are also described.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: August 29, 2017
    Assignee: NISSHIN FOODS INC.
    Inventors: Masato Ohmura, Yasuyuki Yoshioka, Michihiro Sakakibara, Shinichi Fukudome, Koji Ishizuka, Satomi Nozaki, Miwa Takahashi
  • Patent number: 9708987
    Abstract: The density of fuel being used by a compression-ignition engine and the flammability of the fuel (readiness to ignite when injected into a combustion chamber of the engine, under the current operating conditions of the engine) are respectively detected. When the flammability is excessively low and the density is above a threshold value, the oxygen concentration of the intake air supplied to the cylinders is increased until the flammability reaches a reference condition, while when the flammability is excessively low and the density is below the threshold value, the compression ratio of the engine (and/or each pilot injection amount) is increased until the flammability reaches the reference condition.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: July 18, 2017
    Assignee: DENSO CORPORATION
    Inventors: Masayuki Suzuki, Hideo Naruse, Jun Kawamura, Koji Ishizuka
  • Publication number: 20170123162
    Abstract: An optical fiber splicer includes a fiber fixing portion, a first optical fiber fixed to the fiber fixing portion, a clamp portion which is capable of holding and fixing an extending portion extended from the fiber fixing portion of the first optical fiber and a tip portion of a second optical fiber optically connected to the extending portion of the first optical fiber between a base member and a pressing member being openable and closable with respect to the base member, and a solid index matching material which is attached to a tip surface of the extending portion of the first optical fiber and is interposed between the first optical fiber and the second optical fiber.
    Type: Application
    Filed: March 31, 2015
    Publication date: May 4, 2017
    Applicants: FUJIKURA LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takaharu MATSUDA, Hung Huu LUONG, Tatsuya OTA, Kazuhiro TAKIZAWA, Hiroichi KATAYOSE, Koji ISHIZUKA, Makoto SHINPO, Kunihiro TOGE
  • Patent number: 9546614
    Abstract: A fuel property detection apparatus detects fuel properties based on cetane number and density of a tested fuel. Tested fuel is examined in terms of ignition timing, and, when the tested fuel has an ignition timing earlier than a threshold, the tested fuel is identified as having a standard cetane number. When the tested fuel has an ignition timing later than the threshold, the tested fuel is identified as having a low cetane number. An advance angle of the ignition timing is increased for yielding a greater ignition timing difference between a light property fuel and a heavy property fuel, and, in such manner, the difference therebetween is detected. When an advancement of the ignition timing is greater than a threshold, the fuel property is identified as heavy, and, when an advancement of the ignition timing is smaller than the threshold, the fuel property is identified as light.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: January 17, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hideo Naruse, Makoto Mashida, Koji Ishizuka, Jun Kawamura, Masayuki Suzuki
  • Publication number: 20160205950
    Abstract: A wheat flour for deep-fried food crusts is obtained by subjecting a mixture including a wheat flour and from 0.05 to 0.5 parts by mass of an emulsifier with respect to 100 parts by mass of the wheat flour to a heating treatment for 1 to 20 seconds under a condition where the temperature of the mixture is from 65 to 99° C. The emulsifier is at least one type of emulsifier selected from sucrose fatty acid esters and lecithin. The blending ratio of the emulsifier is preferably from 0.1 to 0.45 parts by mass with respect to 100 parts by mass of the wheat flour. The wheat flour has an average grain size of preferably less than 100 ?m. A crust material for deep-fried foods including the aforementioned wheat flour for deep-fried food crusts, and a tempura flour including the aforementioned wheat flour for deep-fried food crusts are also described.
    Type: Application
    Filed: February 26, 2014
    Publication date: July 21, 2016
    Applicant: NISSHIN FOODS INC.
    Inventors: Masato OHMURA, Yasuyuki YOSHIOKA, Michihiro SAKAKIBARA, Shinichi FUKUDOME, Koji ISHIZUKA, Satomi NOZAKI, Miwa TAKAHASHI
  • Patent number: 9267459
    Abstract: A fuel-injector-replacement device obtains a learning value of characteristic data of an injector while an engine is running. The learning value stored in an ECU is updated into the learning value. When the engine is stopped, the characteristic data stored in an INJ-EEPROM are updated into the characteristic data stored in the ECU. When the engine is started, it is determined whether the characteristic data stored in the ECU agrees with the characteristic data stored in the INJ-EEPROM. When these data do not agree with each other, it is determined that the fuel-injector is improperly replaced without updating the characteristic data stored in the ECU.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: February 23, 2016
    Assignee: DENSO CORPORATION
    Inventors: Kenichiro Nakata, Koji Ishizuka
  • Patent number: 9169792
    Abstract: An engine control apparatus works to determine target values of a plurality of combustion parameters which represent combustion states of fuel in a combustion engine and are needed to achieve required performances of the combustion engine, calculate a combustion parameter deviation that is a deviation of an actual value of each of the combustion parameters from the target value thereof, select at least one of controlled parameters correlating with the combustion parameters as a function of a degree of a selected one of the combustion parameter deviations for minimizing the selected one of the combustion parameter deviations. The controlled parameters are parameters for controlling operations of actuators working to control the combustion states of the combustion engine. The engine control apparatus controls the one of the controlled parameters, as selected by the controlled parameter selector, to minimize the selected one of the combustion parameter deviations.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: October 27, 2015
    Assignee: DENSO CORPORATION
    Inventors: Shinya Hoshi, Koji Ishizuka, Kazuhiro Higuchi, Sumitaka Ikeda, Yuuki Nakatsuji, Masahiro Asano
  • Publication number: 20150285201
    Abstract: An injection port includes a straightening area which straightens a flow of a fuel, and an increasing area which is a slit connected to a downstream end of the straightening area and increasing a cross-sectional area of the flow toward a downstream end of the increasing area. The fuel is injected from the downstream end of the increasing area. When a cross-sectional area of the downstream end of the straightening area is expressed as S1, a cross-sectional area of the downstream end of the increasing area is expressed as S2, and a shape property value is expressed as X that is equal to S2/S1, the shape property value X is set to be greater than 1.0 and be less than or equal to 4.0.
    Type: Application
    Filed: March 16, 2015
    Publication date: October 8, 2015
    Inventors: Kazufumi SERIZAWA, Masayuki SUZUKI, Koji ISHIZUKA
  • Publication number: 20150252745
    Abstract: A fuel property detection apparatus detects fuel properties based on cetane number and density of a tested fuel. Tested fuel is examined in terms of ignition timing, and, when the tested fuel has an ignition timing earlier than a threshold, the tested fuel is identified as having a standard cetane number. When the tested fuel has an ignition timing later than the threshold, the tested fuel is identified as having a low cetane number. An advance angle of the ignition timing is increased for yielding a greater ignition timing difference between a light property fuel and a heavy property fuel, and, in such manner, the difference therebetween is detected. When an advancement of the ignition timing is greater than a threshold, the fuel property is identified as heavy, and, when an advancement of the ignition timing is smaller than the threshold, the fuel property is identified as light.
    Type: Application
    Filed: February 19, 2015
    Publication date: September 10, 2015
    Inventors: Hideo NARUSE, Makoto MASHIDA, Koji ISHIZUKA, Jun KAWAMURA, Masayuki SUZUKI
  • Patent number: 9127612
    Abstract: A characteristics-detecting-portion analyzes a fuel injection condition based on a fuel pressure waveform which represents a variation in a detection value of the fuel pressure sensor and then detects the fuel-injection-characteristic value based on the analyzed fuel injection condition. The detected parameter is learned and stored in a memory in association with a fuel temperature detected by a fuel temperature sensor. A fuel-injection-rate model is established based on the learned detected parameters. A command-fuel-injection start time and a command-fuel-injection period are defined by use of the fuel-injection-rate model and the current fuel temperature.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: September 8, 2015
    Assignee: DENSO CORPORATION
    Inventors: Kenichiro Nakata, Koji Ishizuka
  • Publication number: 20150159565
    Abstract: The density of fuel being used by a compression-ignition engine and the flammability of the fuel (readiness to ignite when injected into a combustion chamber of the engine, under the current operating conditions of the engine) are respectively detected. When the flammability is excessively low and the density is above a threshold value, the oxygen concentration of the intake air supplied to the cylinders is increased until the flammability reaches a reference condition, while when the flammability is excessively low and the density is below the threshold value, the compression ratio of the engine (and/or each pilot injection amount) is increased until the flammability reaches the reference condition.
    Type: Application
    Filed: December 9, 2014
    Publication date: June 11, 2015
    Inventors: Masayuki SUZUKI, Hideo NARUSE, Jun KAWAMURA, Koji ISHIZUKA
  • Patent number: 8977471
    Abstract: A multicylinder engine is provided with a fuel injector for each cylinder. An ECU defines a fuel injection condition of the fuel injector based on an engine driving condition and executes a fuel injection control for each cylinder based on the defined fuel injection condition. The ECU computes an engine speed with respect to each cylinder. While the engine is running, the fuel injection condition is operated in an operation cylinder. A fuel property is determined based on the engine speed of the operation cylinder and an engine speed of a non-operation cylinder.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: March 10, 2015
    Assignee: Denso Corporation
    Inventors: Kazuhiro Higuchi, Koji Ishizuka
  • Patent number: 8843298
    Abstract: An engine control system which may be used in automotive vehicles includes first correlation data representing correlations between performance parameters associated with different types of performances of a combustion engine and uncorrelated common factors existing among the performance parameters and second correlation data representing correlations between the common factors and combustion parameters associated with combustion states of fuel in the combustion engine. The engine control system determines target values of the common factors using the first correlation data and also determines target values of the combustion parameters using the second correlation data. The engine control system determines command values as a function of the target values of the combustion parameter and outputs them to actuators which control combustion states of fuel in the engine for achieving desired levels of the performances of the combustion engine.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: September 23, 2014
    Assignee: Denso Corporation
    Inventors: Yuuki Nakatsuji, Sumitaka Ikeda, Kazuhiro Higuchi, Koji Ishizuka
  • Patent number: 8812215
    Abstract: A fuel injection system for an internal combustion engine is provided which calculates the quantity of fuel required to bring the pressure in a fuel accumulator into agreement with a target pressure and then control an operation of a high-pressure pump based on the required quantity. Even in the absence of a change in pressure in the accumulator, the system controls the high-pressure pump based on the required quantity. Specifically, the system calculates a feedback fuel quantity required to compensate for a difference between the required quantity and a quantity of the fuel actually supplied to the accumulator, in other words, leans such a quantity difference to correct the required quantity, thus resulting in an enhanced response of the system to control the high-pressure pump to a change in pressure in the accumulator.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: August 19, 2014
    Assignee: Denso Corporation
    Inventors: Kouichi Sugiyama, Koji Ishizuka