Patents by Inventor Kotaro Takahashi

Kotaro 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: 11029625
    Abstract: An image forming apparatus includes: an image carrier configured to carry an image; a transfer unit configured to transfer the image to a medium; and a cleaner configured to remove deposits on a surface of the image carrier after passing through a position of the transfer unit, in which when a type of a medium to be used is a first medium, the cleaner improves an ability to remove the deposits from the image carrier as compared with a case where the medium to be used is a second medium having a lower transfer sensitivity than the first medium.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: June 8, 2021
    Assignee: FUJIFILM BUSINESS INNOVATION CORP.
    Inventors: Kotaro Araki, Masaaki Yamaura, Yoshinori Takahashi, Yoshiyuki Tominaga, Ayumi Noguchi, Takeshi Yasuda, Masahiro Katahira
  • Publication number: 20210156753
    Abstract: A switch according to the present invention includes a base including a recessed portion on one surface of the base; a click spring having a dome shape, the click spring being provided at the recessed portion such that the bottom of the recessed portion is contacted at a dome-shaped opening side of the click spring; a cover provided to cover the recessed portion and to house the click spring at the recessed portion; and a strain detecting element attached to another surface of the base. The strain detecting element is configured to detect strain of the base, the strain occurring in accordance with a depression amount of the click spring that is depressed.
    Type: Application
    Filed: April 17, 2019
    Publication date: May 27, 2021
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takashi KAWAMURA, Yoichi YASUNAGA, Takeshi HIGAKI, Toshihiko TERASHITA, Shintaro OGURA, Shigenori INAMOTO, Yuki TAKAHASHI, Kotaro EGUCHI, Kui LI, Satoshi SATO
  • Publication number: 20210146486
    Abstract: A silver brazing material containing silver, copper, zinc, manganese, nickel, and tin as indispensable constituent elements. The silver brazing material includes 35 mass % or more and 45 mass % or less silver, 18 mass % or more and 28 mass % or less zinc, 2 mass % or more and 6 mass % or less manganese, 1.5 mass % or more and 6 mass % or less nickel, and 0.5 mass % or more and 5 mass % or less tin, with the balance being copper impurities. Within these compositional ranges, a predetermined relation is set between the manganese content and the nickel content, whereby the silver brazing material can be provided with excellent characteristics also in terms of processability or wettability. In the silver brazing material of the present invention, the silver content is reduced, and also melting point reduction and the narrowing of the temperature difference between solidus temperature and liquidus temperature are attempted.
    Type: Application
    Filed: October 24, 2018
    Publication date: May 20, 2021
    Applicants: TANAKA KIKINZOKU KOGYO K.K., TOKYO BRAZE CO., LTD.
    Inventors: Takaomi KISHIMOTO, Masahiro TAKAHASHI, Takashi TERUI, Kotaro MATSU
  • Publication number: 20210102508
    Abstract: A system for controlling a compression ignition engine includes: a speed obtaining section which detects or estimates an engine speed achieved by combustion in an n-th cycle; and an injection amount setting section which sets, in a start period after the start of cranking, a fuel injection amount to be injected by injectors in an (n+1)-th cycle. If the engine speed achieved by the combustion in the n-th cycle falls in the resonance range, the injection amount setting section sets the fuel injection amount for an (n+1)-th cycle to be larger than the fuel injection amount injected when the engine speed is higher than or equal to an upper limit of the resonance range.
    Type: Application
    Filed: November 30, 2016
    Publication date: April 8, 2021
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Patent number: 10890122
    Abstract: At start of an engine, a fuel injection amount is set to a jump-over injection amount if the engine speed obtained in each cycle is higher than or equal to a determination threshold value, which is set lower than a lower limit of a resonance speed range of powertrain by a predetermined reference value. If the engine speed is lower than the value, the fuel injection amount is set to a step-over injection amount that is smaller than the jump-over injection amount. This setting makes it possible to increase the engine speed such that the engine speed approaches the lower limit of the resonance speed range causing resonance in the powertrain, up to a predetermined range, and then causes the engine speed to jump straight to an engine speed which exceeds the resonance speed range, while in the process of increasing the engine speed by executing the combustion cycles.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: January 12, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Patent number: 10883464
    Abstract: A system for controlling a compression ignition engine includes: a speed obtaining section which obtains an engine speed; and an injection amount setting section which sets, in a start period after the start of cranking, a fuel injection amount to be injected by injectors in next and subsequent cycles. If an engine speed achieved by combustion in an (n?1)-th cycle is higher than or equal to a determination threshold value and lower than a lower limit of the resonance range, the injection amount setting section sets the fuel injection amount for the n-th cycle to a jump-over injection amount, and sets the fuel injection amount for the (n+1)-th cycle to a resonance induction reducing amount, which is smaller than the jump-over injection amount.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: January 5, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Publication number: 20190345906
    Abstract: A system for controlling a compression ignition engine includes: a speed obtaining section which obtains an engine speed; and an injection amount setting section which sets, in a start period after the start of cranking, a fuel injection amount to be injected by injectors in next and subsequent cycles. If an engine speed achieved by combustion in an (n?1)-th cycle is higher than or equal to a determination threshold value and lower than a lower limit of the resonance range, the injection amount setting section sets the fuel injection amount for the n-th cycle to a jump-over injection amount, and sets the fuel injection amount for the (n+1)-th cycle to a resonance induction reducing amount, which is smaller than the jump-over injection amount.
    Type: Application
    Filed: November 30, 2016
    Publication date: November 14, 2019
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Publication number: 20190293005
    Abstract: At start of an engine, a fuel injection amount is set to a jump-over injection amount if the engine speed obtained in each cycle is higher than or equal to a determination threshold value, which is set lower than a lower limit of a resonance speed range of powertrain by a predetermined reference value. If the engine speed is lower than the value, the fuel injection amount is set to a step-over injection amount that is smaller than the jump-over injection amount. This setting makes it possible to increase the engine speed such that the engine speed approaches the lower limit of the resonance speed range causing resonance in the powertrain, up to a predetermined range, and then causes the engine speed to jump straight to an engine speed which exceeds the resonance speed range, while in the process of increasing the engine speed by executing the combustion cycles.
    Type: Application
    Filed: November 30, 2016
    Publication date: September 26, 2019
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Patent number: 10323592
    Abstract: An exhaust gas recirculation control device for an engine is provided. The device includes an EGR passage connecting an exhaust passage of the engine with an intake passage of the engine, an EGR amount adjustor for adjusting an EGR amount that is a recirculation amount of exhaust gas of the engine through the EGR passage, an adjustor controller for controlling the EGR adjustor to adjust the EGR amount, and a gear position detector for detecting a gear position of a transmission of a vehicle on which the engine is mounted. When the gear position detected by the gear position detector during an idle operation of the engine is a non-travel position, the adjustor controller performs an EGR amount increase control in which the EGR amount adjustor is controlled to increase the EGR amount to be higher than when the gear position is a travel position.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: June 18, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Hiroshi Minamoto, Kotaro Takahashi
  • Patent number: 10047662
    Abstract: A cooling system for an engine is provided. The cooling system includes coolant flow paths including a first flow path and a second flow path and where coolant circulates, a coolant pump for circulating coolant within the coolant flow paths, a flow rate control valve for adjusting a flow rate of the coolant through the second flow path, a temperature detector for detecting a temperature of the coolant within the first flow path, and a valve controller for adjusting an opening of the flow rate control valve based on the temperature detected by the temperature detector. The first flow path passes through a cylinder head of the engine, and the second flow path branches from the first flow path and passes through auxiliary machinery of the engine.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: August 14, 2018
    Assignee: Mazda Motor Corporation
    Inventors: Kotaro Takahashi, Nobuo Yunoki, Masahiro Naito
  • Patent number: 9957878
    Abstract: A cooling system for an engine is provided. The cooling system includes coolant flow paths including a first flow path and a second flow path and where coolant circulates, a coolant pump for circulating the coolant within the coolant flow paths, a flow rate control valve for adjusting a flow rate of the coolant through the second flow path, a temperature detector for detecting a temperature of the coolant within the first flow path, a valve controller for adjusting an opening of the flow rate control valve based on the temperature detected by the temperature detector, and an output level determiner for determining an output level of the engine based on at least one of a fuel injection amount for the engine and an engine speed.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: May 1, 2018
    Assignee: Mazda Motor Corporation
    Inventors: Kotaro Takahashi, Nobuo Yunoki, Masahiro Naito, Atsushi Yamada
  • Patent number: 9879595
    Abstract: An exhaust control apparatus for an engine is provided. The apparatus includes a turbocharger, a high-pressure exhaust gas recirculation (EGR) device, a low-pressure EGR device, and a flap controller. The turbocharger includes a turbine, a compressor, and movable flaps, and rotates the turbine by exhaust gas to drive the compressor so as to boost intake air. The high-pressure EGR device recirculates, within a first engine operating range, the exhaust gas from a position of an exhaust passage upstream of the turbine to a position of an intake passage downstream of the compressor. The low-pressure EGR device recirculates, within a second engine operating range, the exhaust gas from a position of the exhaust passage downstream of the turbine to a position of the intake passage upstream of the compressor. The flap controller controls flap openings.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: January 30, 2018
    Assignee: Mazda Motor Corporation
    Inventors: Kenjiro Konomi, Nobuo Yunoki, Kotaro Takahashi
  • Publication number: 20170201627
    Abstract: Methods and systems provide a telephone service with a personal switch box. One aspect of an embodiment of the invention extends use of a telephone number on a Public Switched Telephone Network to mobile terminals by a personal switch box relaying telephone call signals between the Public Telephone Network and an IP-PBX, where the IP-PBX routes the calls between the personal switch box and a cellular phone that is associated with the personal switch box, through a gateway of a mobile virtual network operator the telephone number over mobile wireless network. The gateway may control network bandwidth allocation for the data traffic with the mobile terminals during voice stream data transmission for providing required quality of service.
    Type: Application
    Filed: November 2, 2016
    Publication date: July 13, 2017
    Inventors: Naohisa Fukuda, Frank Seiji Sanda, Yasushi Kudo, Greg Deickman, Kotaro Takahashi, Hiroaki Yokoyama, Takaaki Kawataka, Daisuke Tajima, Takahiro Sato, Kazuhiro Shirato
  • Patent number: 9512775
    Abstract: A cooling system for an engine is provided. The cooling system includes an EGR device including an EGR passage for recirculating exhaust gas into an intake passage, an EGR valve for adjusting a flow rate of the recirculating exhaust gas, and an EGR cooler for cooling the recirculating exhaust gas, an EGR valve controller for controlling the EGR valve, coolant flow paths including a first flow path and a second flow path and where coolant circulates, a coolant pump for circulating coolant within the coolant flow paths, a flow rate control valve for adjusting a flow rate of the coolant through the second flow path, a temperature detector for detecting a coolant temperature within the first flow path, and a valve controller for adjusting a flow rate control valve opening based on the detected temperature.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: December 6, 2016
    Assignee: Mazda Motor Corporation
    Inventors: Kotaro Takahashi, Nobuo Yunoki, Masahiro Naito
  • Publication number: 20160090944
    Abstract: A cooling system for an engine is provided. The cooling system includes an EGR device including an EGR passage for recirculating exhaust gas into an intake passage, an EGR valve for adjusting a flow rate of the recirculating exhaust gas, and an EGR cooler for cooling the recirculating exhaust gas, an EGR valve controller for controlling the EGR valve, coolant flow paths including a first flow path and a second flow path and where coolant circulates, a coolant pump for circulating coolant within the coolant flow paths, a flow rate control valve for adjusting a flow rate of the coolant through the second flow path, a temperature detector for detecting a coolant temperature within the first flow path, and a valve controller for adjusting a flow rate control valve opening based on the detected temperature.
    Type: Application
    Filed: August 19, 2015
    Publication date: March 31, 2016
    Inventors: Kotaro Takahashi, Nobuo Yunoki, Masahiro Naito
  • Publication number: 20160090928
    Abstract: An exhaust control apparatus for an engine is provided. The apparatus includes a turbocharger, a high-pressure exhaust gas recirculation (EGR) device, a low-pressure EGR device, and a flap controller. The turbocharger includes a turbine, a compressor, and movable flaps, and rotates the turbine by exhaust gas to drive the compressor so as to boost intake air. The high-pressure EGR device recirculates, within a first engine operating range, the exhaust gas from a position of an exhaust passage upstream of the turbine to a position of an intake passage downstream of the compressor. The low-pressure EGR device recirculates, within a second engine operating range, the exhaust gas from a position of the exhaust passage downstream of the turbine to a position of the intake passage upstream of the compressor. The flap controller controls flap openings.
    Type: Application
    Filed: August 7, 2015
    Publication date: March 31, 2016
    Inventors: Kenjiro Konomi, Nobuo Yunoki, Kotaro Takahashi
  • Publication number: 20160090896
    Abstract: A cooling system for an engine is provided. The cooling system includes coolant flow paths including a first flow path and a second flow path and where coolant circulates, a coolant pump for circulating coolant within the coolant flow paths, a flow rate control valve for adjusting a flow rate of the coolant through the second flow path, a temperature detector for detecting a temperature of the coolant within the first flow path, and a valve controller for adjusting an opening of the flow rate control valve based on the temperature detected by the temperature detector. The first flow path passes through a cylinder head of the engine, and the second flow path branches from the first flow path and passes through auxiliary machinery of the engine.
    Type: Application
    Filed: August 19, 2015
    Publication date: March 31, 2016
    Inventors: Kotaro Takahashi, Nobuo Yunoki, Masahiro Naito
  • Publication number: 20160090898
    Abstract: A cooling system for an engine is provided. The cooling system includes coolant flow paths including a first flow path and a second flow path and where coolant circulates, a coolant pump for circulating the coolant within the coolant flow paths, a flow rate control valve for adjusting a flow rate of the coolant through the second flow path, a temperature detector for detecting a temperature of the coolant within the first flow path, a valve controller for adjusting an opening of the flow rate control valve based on the temperature detected by the temperature detector, and an output level determiner for determining an output level of the engine based on at least one of a fuel injection amount for the engine and an engine speed.
    Type: Application
    Filed: August 19, 2015
    Publication date: March 31, 2016
    Inventors: Kotaro Takahashi, Nobuo Yunoki, Masahiro Naito, Atsushi Yamada
  • Publication number: 20160069300
    Abstract: An exhaust gas recirculation control device for an engine is provided. The device includes an EGR passage connecting an exhaust passage of the engine with an intake passage of the engine, an EGR amount adjustor for adjusting an EGR amount that is a recirculation amount of exhaust gas of the engine through the EGR passage, an adjustor controller for controlling the EGR adjustor to adjust the EGR amount, and a gear position detector for detecting a gear position of a transmission of a vehicle on which the engine is mounted. When the gear position detected by the gear position detector during an idle operation of the engine is a non-travel position, the adjustor controller performs an EGR amount increase control in which the EGR amount adjustor is controlled to increase the EGR amount to be higher than when the gear position is a travel position.
    Type: Application
    Filed: August 7, 2015
    Publication date: March 10, 2016
    Inventors: Hiroshi Minamoto, Kotaro Takahashi
  • Patent number: 9182317
    Abstract: A simulated gas supply apparatus includes a raw gas source group including a plurality of raw gas sources, a plurality of flow controller groups, each of which includes a plurality of flow controllers, a flow control system including the flow controller groups, a primary supply pipe for supplying a simulated gas to an evaluation device, a primary exhaust pipe for exhausting the simulated gas, a switching valve system including a plurality of switching valves so as to switch the simulated gas flow between the primary supply pipe and the primary exhaust pipe, and a controlling unit that controls the flow control system and the switching valve system.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: November 10, 2015
    Assignee: BEST INSTRUMENTS CO., LTD.
    Inventors: Akitoyo Takamiya, Kotaro Takahashi