Patents by Inventor Yuki Kosaka

Yuki Kosaka 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: 8410277
    Abstract: It is an object of the present invention to provide an efficient method for manufacturing heterocycle-substituted pyridine derivatives. The present invention provides a method for manufacturing a compound represented by the following formula (I): the method including reacting a compound represented by the following formula (III): and a compound represented by the following formula (II): in a solvent and in the presence of a palladium catalyst and a base, wherein R1 represents a hydrogen atom, etc.; R2 represents a hydrogen atom, a C1-6 alkyl group, an amino group that may be protected with a protective group, etc.; one of X and Y represents a nitrogen atom and the other represents a nitrogen atom or an oxygen atom; Q represents a leaving group; the ring A represents a 5- or 6-member heteroaryl ring or a benzene ring, which may have one or two halogen atoms or C1-6 alkyl groups; Z represents a single bond, a methylene group, an ethylene group, an oxygen atom, etc.
    Type: Grant
    Filed: December 25, 2008
    Date of Patent: April 2, 2013
    Assignee: Eisai R&D Managment Co., Ltd.
    Inventors: Jun Niijima, Kazuhiro Yoshizawa, Yuki Kosaka, Shinya Abe
  • Patent number: 8140205
    Abstract: A hybrid-vehicle driving system includes an engine, a transmission, a first motor/generator provided between the engine and the transmission, and a battery that can charge and discharge the first motor/generator. When an estimated output voltage of the first motor/generator becomes higher than or equal to a predetermined voltage during a gear shift operation of the transmission, the battery is electrically disconnected from the driving system, and the voltage of a power line on the side of the first motor/generator is then decreased so as to charge the battery.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: March 20, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomoyuki Hanyu, Kazuhiro Takeda, Yuki Kosaka, Hiraku Ooba, Hiroshi Iwano, Susumu Komiyama
  • Publication number: 20110263845
    Abstract: It is an object of the present invention to provide an efficient method for manufacturing heterocycle-substituted pyridine derivatives. The present invention provides a method for manufacturing a compound represented by the following formula (I): the method including reacting a compound represented by the following formula (III): and a compound represented by the following formula (II): in a solvent and in the presence of a palladium catalyst and a base, wherein R1 represents a hydrogen atom, etc.; R2 represents a hydrogen atom, a C1-6 alkyl group, an amino group that may be protected with a protective group, etc.; one of X and Y represents a nitrogen atom and the other represents a nitrogen atom or an oxygen atom; Q represents a leaving group; the ring A represents a 5- or 6-member heteroaryl ring or a benzene ring, which may have one or two halogen atoms or C1-6 alkyl groups; Z represents a single bond, a methylene group, an ethylene group, an oxygen atom, etc.
    Type: Application
    Filed: December 25, 2008
    Publication date: October 27, 2011
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Jun Niijima, Kazuhiro Yoshizawa, Yuki Kosaka, Shinya Abe
  • Publication number: 20100263964
    Abstract: An intake silencer of a gas turbine capable of efficient noise reduction in which a high frequency sound-absorbing splitter group composed of a plurality of sound-absorbing splitters capable of reducing highfrequency component noise and a middle/low sound-absorbing splitter group composed of a plurality of sound-absorbing splitters capable of reducing middle/low frequency component noise are disposed separately in a gas flow direction. High frequency component noise is reduced by the high frequency sound-absorbing splitter group, and middle/low frequency component noise is reduced by the middle/low sound-absorbing splitter group.
    Type: Application
    Filed: September 13, 2007
    Publication date: October 21, 2010
    Inventors: Teruo Kosaka, Yuki Kosaka, Yoshiyuki Doi, Katsutoshi Okuno
  • Patent number: 7710067
    Abstract: A power accumulating unit of a power supply system includes a first switch section configured to achieve a first voltage output state in which an output voltage is substantially equal to a first motor driving voltage and a second switch section configured to achieve a second voltage output state in which the output voltage is substantially equal to a second motor driving voltage that is higher than the first motor driving voltage. A voltage switching control part is configured to perform a voltage switching control to switch between the first motor driving voltage and the second motor driving voltage by alternately operating the first and second switch sections to repeatedly switch between the first voltage output state and the second voltage output state.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: May 4, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yuki Kosaka, Hiroshi Iwano, Susumu Komiyama, Tomoyuki Hanyu, Kazuhiro Takeda
  • Patent number: 7626354
    Abstract: To protect the inverters and motor generators from damage caused by abnormal currents resulting from the sudden changes in voltage that occur when changing the battery voltage. A vehicle equipped with an engine 10* and first and second motor-generators 11 and 12 that can generate electricity by being driven by engine 10* or from regeneration of kinetic energy of the vehicle, power supply line 25 that connects first motor-generator 11 with second motor-generator 12, and battery 23 connected via switch 24 in the middle of electric power supply line 25. When changing the voltage of battery 23, switch 24 is opened before the voltage of battery 23 is changed, and switch 24 is closed only after one of the motor generators 11 and 12 is caused to generate electric power or propel the vehicle in order to reduce the difference in voltage between power supply line 25 and battery 23.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: December 1, 2009
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomoyuki Hanyu, Kazuhiro Takeda, Yuki Kosaka, Hiraku Ooba, Hiroshi Iwano
  • Publication number: 20080306643
    Abstract: A hybrid-vehicle driving system includes an engine, a transmission, a first motor/generator provided between the engine and the transmission, and a battery that can charge and discharge the first motor/generator. When an estimated output voltage of the first motor/generator becomes higher than or equal to a predetermined voltage during a gear shift operation of the transmission, the battery is electrically disconnected from the driving system, and the voltage of a power line on the side of the first motor/generator is then decreased so as to charge the battery.
    Type: Application
    Filed: January 10, 2007
    Publication date: December 11, 2008
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tomoyuki Hanyu, Kazuhiro Takeda, Yuki Kosaka, Hiraku Ooba, Hiroshi Iwano, Susumu Komiyama
  • Publication number: 20080174274
    Abstract: A battery unit has positive and negative terminals, a pair of battery modules, three switch modules, a bypass line and a controller. A first battery module is connected to the positive and negative terminals. The second battery module is connected in parallel with the first battery module. Each battery module includes a battery and a reactor connected together in series. The first switch module extends between the negative terminal and a negative electrode side of the first battery module. The second switch module extends between positive electrode sides of the first and second battery modules. The bypass line connects a point lying between the first battery module and the first switch module to a point lying between the second battery module and the second switch module. The third switch module is arranged in the bypass line. The controller controls an on-off state of each of the switch modules.
    Type: Application
    Filed: January 7, 2008
    Publication date: July 24, 2008
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yuki KOSAKA, Susumu KOMIYAMA, Kazuhiro TAKEDA
  • Publication number: 20080054870
    Abstract: A power accumulating unit of a power supply system includes a first switch section configured to achieve a first voltage output state in which an output voltage is substantially equal to a first motor driving voltage and a second switch section configured to achieve a second voltage output state in which the output voltage is substantially equal to a second motor driving voltage that is higher than the first motor driving voltage. A voltage switching control part is configured to perform a voltage switching control to switch between the first motor driving voltage and the second motor driving voltage by alternately operating the first and second switch sections to repeatedly switch between the first voltage output state and the second voltage output state.
    Type: Application
    Filed: July 24, 2007
    Publication date: March 6, 2008
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yuki KOSAKA, Hiroshi IWANO, Susumu KOMIYAMA, Tomoyuki HANYU, Kazuhiro TAKEDA
  • Publication number: 20060164034
    Abstract: To protect the inverters and motor generators from damage caused by abnormal currents resulting from the sudden changes in voltage that occur when changing the battery voltage. A vehicle equipped with an engine 10* and first and second motor-generators 11 and 12 that can generate electricity by being driven by engine 10* or from regeneration of kinetic energy of the vehicle, power supply line 25 that connects first motor-generator 11 with second motor-generator 12, and battery 23 connected via switch 24 in the middle of electric power supply line 25. When changing the voltage of battery 23, switch 24 is opened before the voltage of battery 23 is changed, and switch 24 is closed only after one of the motor generators 11 and 12 is caused to generate electric power or propel the vehicle in order to reduce the difference in voltage between power supply line 25 and battery 23.
    Type: Application
    Filed: December 23, 2005
    Publication date: July 27, 2006
    Inventors: Tomoyuki Hanyu, Kazuhiro Takeda, Yuki Kosaka, Hiraku Ooba, Hiroshi Iwano