Patents by Inventor Tatsuya Ichikawa
Tatsuya Ichikawa 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: 20240026054Abstract: One embodiment of the present invention relates to a graft-modified product, an adhesive, an olefin resin composition, or a laminate, and the graft-modified product is a graft-modified product of at least one base polymer selected from polyolefins by a carbodiimide monomer having a carbodiimide group and a polymerizable double bond.Type: ApplicationFiled: November 30, 2021Publication date: January 25, 2024Applicant: MITSUI CHEMICALS, INC.Inventors: Tatsuya ICHIKAWA, Katsuyoshi HARADA, Yusuke MIZOBUCHI, Yuuya GOTO
-
Patent number: 11821383Abstract: A control apparatus for an engine includes a crank angle sensor and a processor. The processor acquires a first crank angular velocity difference which is a change in a crank angular velocity in a first region. The first region includes a rotational change correlated with an engine torque output. The processor acquires a second crank angular velocity difference which is a change in the crank angular velocity in a second region. The second region includes a rotational change correlated with a combustion rate attributable to an air-fuel ratio. In a case where the first crank angular velocity difference is less than or equal to a first threshold and the second crank angular velocity difference is less than or equal to a second threshold, the processor performs an increase correction on a fuel amount to be supplied to the engine.Type: GrantFiled: January 5, 2023Date of Patent: November 21, 2023Assignee: SUBARU CORPORATIONInventors: Keisuke Katsuta, Tatsuya Ichikawa, Yohsuke Shimoji, Takuya Shidooka, Shinsuke Onodera
-
Publication number: 20230365733Abstract: An object of the present invention is to provide a modifier suitable for obtaining a lubricating oil, a coating material, an adhesive, and the like with better smoothness and few bumps and to provide a rubber composition for a tire, which is suitable for preparing a tire with both excellent braking performance and excellent fuel efficiency. The present invention relates to an organosilicon compound graft copolymer (X) including a main chain derived from an ethylene/a-olefin copolymer (A) and a graft part derived from an organosilicon compound (B) having one or more unsaturated groups; and a rubber composition for a tire, including 1 to 30 parts by mass of the organosilicon compound graft copolymer (X) based on 100 parts by mass of a diene rubber including an aromatic vinyl-conjugated diene copolymerized rubber.Type: ApplicationFiled: October 13, 2021Publication date: November 16, 2023Applicant: MITSUI CHEMICALS, INC.Inventors: Katsuyoshi HARADA, Yusuke MIZOBUCHI, Chihiro KOMATSU, Tatsuya ICHIKAWA, Hirokazu TANAKA, Yuji ISHII, Kazuki HIGUCHI, Kotaro ICHINO
-
Publication number: 20230235713Abstract: A control apparatus for an engine includes a crank angle sensor and a processor. The processor acquires a first crank angular velocity difference which is a change in a crank angular velocity in a first region. The first region includes a rotational change correlated with an engine torque output. The processor acquires a second crank angular velocity difference which is a change in the crank angular velocity in a second region. The second region includes a rotational change correlated with a combustion rate attributable to an air-fuel ratio. In a case where the first crank angular velocity difference is less than or equal to a first threshold and the second crank angular velocity difference is less than or equal to a second threshold, the processor performs an increase correction on a fuel amount to be supplied to the engine.Type: ApplicationFiled: January 5, 2023Publication date: July 27, 2023Inventors: Keisuke KATSUTA, Tatsuya ICHIKAWA, Yohsuke SHIMOJI, Takuya SHIDOOKA, Shinsuke ONODERA
-
Publication number: 20210333752Abstract: An image forming apparatus includes a memory and a processor configured to, when humidity detected by a humidity sensor is equal to or above a preset value with paper sheets stacked in a paper sheet holder being fed to an image forming unit, perform control to set a separation operation time used to separate in a separation operation a single paper sheet from multiple paper sheets stacked in the paper sheet holder to be longer than the separation operation time used when the detected humidity is lower than the preset value.Type: ApplicationFiled: December 2, 2020Publication date: October 28, 2021Applicant: FUJIFILM BUSINESS INNOVATION CORP.Inventors: Hitoshi KOMATSU, Akira OTSU, Takuma SUWA, Takashi KAWAKAMI, Tatsuya ICHIKAWA, Kunihiko HAYASHI, Yutaka WATANABE, Masae TAKABAYASHI, Ryosuke HIRONAKA, Hiroshi SHIOTA
-
Patent number: 11156959Abstract: An image forming apparatus includes a memory and a processor configured to, when humidity detected by a humidity sensor is equal to or above a preset value with paper sheets stacked in a paper sheet holder being fed to an image forming unit, perform control to set a separation operation time used to separate in a separation operation a single paper sheet from multiple paper sheets stacked in the paper sheet holder to be longer than the separation operation time used when the detected humidity is lower than the preset value.Type: GrantFiled: December 2, 2020Date of Patent: October 26, 2021Assignee: FUJIFILM Business Innovation Corp.Inventors: Hitoshi Komatsu, Akira Otsu, Takuma Suwa, Takashi Kawakami, Tatsuya Ichikawa, Kunihiko Hayashi, Yutaka Watanabe, Masae Takabayashi, Ryosuke Hironaka, Hiroshi Shiota
-
Patent number: 10907582Abstract: A pressure sensor malfunction determination device for a fuel tank includes a fuel tank that stores fuel, a canister that absorbs an evaporated fuel gas and includes a drain port opened to atmosphere, an evaporation path communicating with the canister and fuel tank, a purge gas path communicating with an engine inlet system and the canister, a pressure sensor that detects a pressure, a solenoid valve that opens/closes the evaporation path, and a control unit that controls an opening/closing state of the solenoid valve. When the fuel tank pressure is one of predetermined positive and negative pressure states, the control unit performs valve-opening control on the solenoid valve. The control unit includes a pressure sensor malfunction determination unit that, when an output value of the pressure sensor detected under an atmospheric pressure condition corresponds to a pressure other than the atmospheric pressure, determines that the pressure sensor is malfunctioning.Type: GrantFiled: November 8, 2019Date of Patent: February 2, 2021Assignee: SUBARU CORPORATIONInventors: Tatsuya Ichikawa, Masahiro Ono
-
Patent number: 10866160Abstract: A misfire determination apparatus includes first to third obtaining units, a calculator, and a determination unit. The first obtaining unit is configured to obtain actual engine rotation number of an engine. The engine is coupled, via a torsion element, to side of an axle coupled to an electric motor in a torque transmittable manner. The second obtaining unit is configured to obtain motor rotation number of the electric motor. The calculator is configured to calculate calculated engine rotation number of the engine on the basis of the motor rotation number and a total gear ratio between the electric motor and the engine. The third obtaining unit is configured to obtain a rotation deviation between the actual and the calculated engine rotation numbers. The determination unit is configured to execute misfire determination of the engine by determining the engine as being misfiring when the rotation deviation exceeds a determination threshold.Type: GrantFiled: December 4, 2018Date of Patent: December 15, 2020Assignee: SUBARU CORPORATIONInventors: Mao Ota, Tatsuya Ichikawa, Daiki Shiwa, Masaya Kajii
-
Patent number: 10840472Abstract: A display device having light emitting elements that respectively include a first electrode formed on a substrate, a laminated structure formed on the first electrode, and a second electrode formed on the laminated structure. The laminated structure is formed by laminating, in the following order from the first electrode side, at least a first organic layer including a first light emitting layer, a charge generation layer in which a first layer into which a first carrier is injected and a second layer into which a second carrier is injected are laminated, and a second organic layer including a second light emitting layer. In a light emitting element including a defect region, the charge generation layer is in a high electrical resistance state or an insulated state in the defect region, while being in a low electrical resistance state in a region other than the defect region.Type: GrantFiled: July 29, 2016Date of Patent: November 17, 2020Assignee: Sony CorporationInventors: Tatsuya Ichikawa, Taizo Tanaka
-
Publication number: 20200158050Abstract: A pressure sensor malfunction determination device for a fuel tank includes a fuel tank that stores fuel, a canister that absorbs an evaporated fuel gas and includes a drain port opened to atmosphere, an evaporation path communicating with the canister and fuel tank, a purge gas path communicating with an engine inlet system and the canister, a pressure sensor that detects a pressure, a solenoid valve that opens/closes the evaporation path, and a control unit that controls an opening/closing state of the solenoid valve. When the fuel tank pressure is one of predetermined positive and negative pressure states, the control unit performs valve-opening control on the solenoid valve. The control unit includes a pressure sensor malfunction determination unit that, when an output value of the pressure sensor detected under an atmospheric pressure condition corresponds to a pressure other than the atmospheric pressure, determines that the pressure sensor is malfunctioning.Type: ApplicationFiled: November 8, 2019Publication date: May 21, 2020Applicant: SUBARU CORPORATIONInventors: Tatsuya ICHIKAWA, Masahiro ONO
-
Publication number: 20190293519Abstract: A misfire determination apparatus includes first to third obtaining units, a calculator, and a determination unit. The first obtaining unit is configured to obtain actual engine rotation number of an engine. The engine is coupled, via a torsion element, to side of an axle coupled to an electric motor in a torque transmittable manner. The second obtaining unit is configured to obtain motor rotation number of the electric motor. The calculator is configured to calculate calculated engine rotation number of the engine on the basis of the motor rotation number and a total gear ratio between the electric motor and the engine. The third obtaining unit is configured to obtain a rotation deviation between the actual and the calculated engine rotation numbers. The determination unit is configured to execute misfire determination of the engine by determining the engine as being misfiring when the rotation deviation exceeds a determination threshold.Type: ApplicationFiled: December 4, 2018Publication date: September 26, 2019Inventors: Mao OTA, Tatsuya ICHIKAWA, Daiki SHIWA, Masaya KAJII
-
Publication number: 20180261790Abstract: A display device having light emitting elements that respectively include a first electrode formed on a substrate, a laminated structure formed on the first electrode, and a second electrode formed on the laminated structure. The laminated structure is formed by laminating, in the following order from the first electrode side, at least a first organic layer including a first light emitting layer, a charge generation layer in which a first layer into which a first carrier is injected and a second layer into which a second carrier is injected are laminated, and a second organic layer including a second light emitting layer. In a light emitting element including a defect region, the charge generation layer is in a high electrical resistance state or an insulated state in the defect region, while being in a low electrical resistance state in a region other than the defect region.Type: ApplicationFiled: July 29, 2016Publication date: September 13, 2018Inventors: Tatsuya Ichikawa, Taizo Tanaka
-
Patent number: 9918078Abstract: A method of measuring a display delay time includes a step where a display pattern displayed on a first display including i (i is a natural number greater than 2) display elements is switched to a display pattern other than the display pattern at every elapse of a pattern continuation time, and j (j is a natural number, 1<j<i) display elements brought into a first display state is switched at every elapse, a step where an image of the display pattern on the first display is captured, a step where the captured image is displayed on a second display, and a step where the display delay time from capturing the image on the first display to displaying the image on the second display is measured based on a difference between the display pattern on the first display and the display pattern on the second display.Type: GrantFiled: August 21, 2017Date of Patent: March 13, 2018Assignee: Seiko Epson CorporationInventors: Ryuichi Shiohara, Tatsuya Ichikawa
-
Publication number: 20170347090Abstract: A method of measuring a display delay time includes a step where a display pattern displayed on a first display including i (i is a natural number greater than 2) display elements is switched to a display pattern other than the display pattern at every elapse of a pattern continuation time, and j (j is a natural number, 1<j<i) display elements brought into a first display state is switched at every elapse, a step where an image of the display pattern on the first display is captured, a step where the captured image is displayed on a second display, and a step where the display delay time from capturing the image on the first display to displaying the image on the second display is measured based on a difference between the display pattern on the first display and the display pattern on the second display.Type: ApplicationFiled: August 21, 2017Publication date: November 30, 2017Inventors: Ryuichi SHIOHARA, Tatsuya ICHIKAWA
-
Patent number: 9769470Abstract: A method of measuring a display delay includes a first step where a first display device performs a switching operation of switching a display pattern displayed on a display unit of the first display device, a second step where a first camera captures a first image and displays the first image in a live view mode, a third step where a second camera captures a second image containing the first image and records at least the first image contained in the captured second image while being correlated with information indicative of an imaging time when the second image is captured, and a fourth step where a display delay time of the first camera from the imaging of the first image to the display of the first image is deduced from the time indicated by the display pattern contained in the first image and the information indicative of the imaging time.Type: GrantFiled: December 23, 2016Date of Patent: September 19, 2017Assignee: Seiko Epson CorporationInventors: Ryuichi Shiohara, Tatsuya Ichikawa
-
Publication number: 20170118465Abstract: A method of measuring a display delay includes a first step where a first display device performs a switching operation of switching a display pattern displayed on a display unit of the first display device, a second step where a first camera captures a first image and displays the first image in a live view mode, a third step where a second camera captures a second image containing the first image and records at least the first image contained in the captured second image while being correlated with information indicative of an imaging time when the second image is captured, and a fourth step where a display delay time of the first camera from the imaging of the first image to the display of the first image is deduced from the time indicated by the display pattern contained in the first image and the information indicative of the imaging time.Type: ApplicationFiled: December 23, 2016Publication date: April 27, 2017Inventors: Ryuichi SHIOHARA, Tatsuya ICHIKAWA
-
Patent number: 9617683Abstract: Disclosed is a separation membrane comprising—an elongated substrate having fluid permeability and a separation layer formed at the surface of said substrate—wherein the aforementioned separation layer comprises a predetermined thickness section having a predetermined thickness and thin sections each positioned on the outside of both edges in the widthwise direction of said predetermined thickness portion and having a thinner thickness than the aforementioned predetermined thickness, and there is a separation-layer-lacking section, at which only the aforementioned substrate is present and the aforementioned separation layer is absent, between the outside edges in the widthwise direction of each of said thin sections and the outer edges in the widthwise direction of the aforementioned substrate. The separation membrane can be produced by using coating bar having a protrusion on both the left and right ends of the surface that contacts a macromolecule solution for forming the separation layer.Type: GrantFiled: March 17, 2011Date of Patent: April 11, 2017Assignee: TORAY INDUSTRIES, INC.Inventors: Tatsuya Ichikawa, Sadajiro Hatano
-
Patent number: 9565425Abstract: A method of measuring a shutter time lag of a camera includes: a first step of switching a display pattern of a display unit including i (i is a natural number greater than 2) display elements to a different display pattern at every time TP, and in the first step, the number of j (j is a natural number, and 1<j<i) display elements to be brought into a first display state among i display elements is switched at every time TP; a second step of capturing an image of the display unit in response to a shutter operation of the camera performed in synchronization with the switching operation; and a third step of deducing a shutter time lag taken from the shutter operation to the imaging of the display unit from the image captured by the camera.Type: GrantFiled: October 8, 2013Date of Patent: February 7, 2017Assignee: Seiko Epson CorporationInventors: Ryuichi Shiohara, Tatsuya Ichikawa
-
Patent number: 9479718Abstract: Provided is a signal processing apparatus, including: an A/D conversion unit configured to perform A/D conversion of a first signal, A/D conversion of a second signal, A/D conversion of a third signal, and A/D conversion of a fourth signal; and a correlated double sampling processing unit configured to generate a first output signal by performing correlated double sampling using a first digital data item obtained through the A/D conversion of the first signal, and a second digital data item obtained through the A/D conversion of the second signal, a second output signal by performing correlated double sampling using a third digital data item obtained through the A/D conversion of the third signal, and a fourth digital data item obtained through the A/D conversion of the fourth signal, and a third output signal by performing correlated double sampling using the first output signal and the second output signal.Type: GrantFiled: February 5, 2015Date of Patent: October 25, 2016Assignee: Sony CorporationInventors: Tatsuya Ichikawa, Nobutaka Shimamura, Atsushi Suzuki, Yusuke Oike, Katsumi Honda, Masahiro Nakamura
-
Patent number: 9263694Abstract: There is provided an organic EL element including a light emitting unit including at least a plurality of light emitting layers each containing an organic compound and emitting light when a predetermined potential difference is supplied and an intermediate layer that is arranged between the light emitting layers to inject electric charge into the light emitting layers, an anode and a cathode between which the light emitting unit is interposed in a stacking direction and which supply the predetermined potential difference to the light emitting unit, and a potential control mechanism configured to control potential of the intermediate layer in a manner that the potential is set to potential between potential of the anode and potential of the cathode.Type: GrantFiled: January 16, 2015Date of Patent: February 16, 2016Assignee: Sony CorporationInventors: Tatsuya Ichikawa, Taizo Tanaka