Patents by Inventor Yasuo Takagi

Yasuo Takagi 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: 20100023167
    Abstract: In an air-conditioning system controller provided with a central control unit and a local control unit, the central control unit includes a heat source machine measurement system for measuring an input/output state of a heat source machine, a setting unit for setting air-conditioning condition data on air-conditioning object spaces, an outdoor air measurement system for measuring outdoor air condition data, a total air-conditioning load operating unit, an optimal operating state estimation unit, and a heat source machine control. The total air-conditioning load operating unit calculates a total air-conditioning load or a heat exchange rate of the heat source machine based on chilled water inlet and outlet temperatures and chilled water flow rate of the heat source machine.
    Type: Application
    Filed: September 30, 2009
    Publication date: January 28, 2010
    Inventors: Yasuyuki ITO, Yasuo Takagi, Kenzo Yonezawa, Yoshiki Murakami, Nobutaka Nishimura, Nobuyuki Donen
  • Patent number: 7652567
    Abstract: A plant monitoring apparatus includes: a process measuring unit; a warning determining unit; a warning selecting unit; a display processing unit; a display/setting unit; a warning criteria setting unit; a warning criteria database; and a warning criteria supplying unit. The warning determining unit determines a plurality of warning data to be issued as warnings from a large amount of process data collected by the process measuring unit on the basis of a predetermined determination criterion. The warning selecting unit compares the plurality of warning data with one or more classification criteria supplied by the warning criteria supplying unit so as to classify the plurality of warning data. Warnings are classified into categories according to the classification and the classified warnings are displayed on the display/setting unit.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: January 26, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Dai Murayama, Akimasa Nakai, Masuo Yamasaki, Yutaka Iino, Yasuo Takagi
  • Publication number: 20100006662
    Abstract: An air conditioning control system allows a supply air switching controller to alternately switch outside air control and return air control at a preset switching interval. The supply air switching controller is connected to an air conditioner placed to correspond to each room inside as an air conditioning control subject. The outside air control takes outside air into a temperature/humidity adjustment coil of the air conditioner by opening a first damper provided in the air conditioner in order to adjust an intake volume of the outside air into the air conditioner and by closing a second damper provided in the air conditioner in order to adjust an intake volume of return air from the room inside. The return air control takes the return air from the room inside into the temperature/humidity adjustment coil of the air conditioner by closing the first damper and opening the second damper.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 14, 2010
    Inventors: Kenzo YONEZAWA, Yasuo Takagi, Nobutaka Nishimura, Yuuichi Hanada, Naoki Makino, Hideki Oono, Akihiro Fujii, Susumu Sugawara, Tomonori Maegawa, Hiroshi Morimoto
  • Publication number: 20090111924
    Abstract: A prepreg is provided capable of being a composite material having suitable high heat resistance, impact resistance, and mechanical properties under high temperature and high humidity conditions. As the matrix resin, a composition including a specific epoxy resin component (A), a specific bifunctional epoxy resin (B), a specific tetrafunctional epoxy resin (C), and a specific aromatic amine compound (D) at specific proportions are used. Particularly, as the epoxy resin component (A), one obtained by mixing and heating a bifunctional epoxy resin (a1), a trifunctional epoxy resin (a2), a phenol compound (a3), and a specific polyamide resin (a4) is used so as to be able to solve the above-described problems.
    Type: Application
    Filed: July 12, 2006
    Publication date: April 30, 2009
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Akihiro Ito, Tadayoshi Saitou, Ietsugu Santo, Junichi Muramatsu, Yasuo Takagi, Kiharu Numata, Yasuhiro Fukuhara, Mina Oobayashi
  • Publication number: 20080234869
    Abstract: A remote performance monitor to acquire monitoring data concerning an air-conditioning system of a monitoring target building and to determine an operating condition of the air-conditioning system, the remote performance monitor comprises a monitoring data receiver (11), a characteristic function calculator (12) and an operating condition calculator (13). The monitoring data receiver (11) receives monitoring data from a monitoring data collecting apparatus in the monitoring target building. The monitoring data is data concerning performance characteristics of air-conditioning machines installed in the air-conditioning system of the monitoring target building. The characteristic function calculator (12) calculates a characteristic function for the monitoring target building and for each of the air-conditioning machines based on the monitoring data.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 25, 2008
    Inventors: Kenzo Yonezawa, Yasuo Takagi, Yasuyuki Ito, Yoshiki Murakami, Nobutaka Nishimura, Nobuyuki Donen
  • Publication number: 20070240437
    Abstract: An air conditioning controller is provided with a room temperature-humidity combination calculation unit, a temperature-humidity setting value determination unit and a temperature-humidity control unit. The room temperature-humidity combination calculation unit is configured to calculate combinations of room temperature and room humidity corresponding to a target value of a thermal comfort index PMV. The temperature-humidity setting value determination unit is configured to select and determine a combination of the room temperature and humidity that achieves energy saving among the calculated combinations of the room temperature and humidity. The temperature-humidity control unit is configured to separately control the room temperature and humidity so that the room temperature and humidity would measure up respectively to the determined temperature and humidity values.
    Type: Application
    Filed: April 13, 2007
    Publication date: October 18, 2007
    Inventors: Kenzo Yonezawa, Yasuo Takagi, Yutaka Iino, Nobutaka Nishimura
  • Publication number: 20070172018
    Abstract: A plant monitoring apparatus includes: a process measuring unit; a warning determining unit; a warning selecting unit; a display processing unit; a display/setting unit; a warning criteria setting unit; a warning criteria database; and a warning criteria supplying unit. The warning determining unit determines a plurality of warning data to be issued as warnings from a large amount of process data collected by the process measuring unit on the basis of a predetermined determination criterion. The warning selecting unit compares the plurality of warning data with one or more classification criteria supplied by the warning criteria supplying unit so as to classify the plurality of warning data. Warnings are classified into categories according to the classification and the classified warnings are displayed on the display/setting unit.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 26, 2007
    Inventors: Dai Murayama, Akimasa Nakai, Masuo Yamasaki, Yutaka Iino, Yasuo Takagi
  • Publication number: 20070148428
    Abstract: A friction material is provided with a matrix fiber, a binder, and a filler. The friction material contains a stabilized zirconia having a lattice constant in a range from 99.93 to 99.95% as compared with a lattice constant of a single crystal of stabilized zirconia. The lattice constant scarcely changes, since the stabilized zirconia contained in the friction material undergoes less introduction of distortions when used under severe conditions. Accordingly, the stable friction characteristic with less change of the friction coefficient in the initial stage of using the brake can be obtained.
    Type: Application
    Filed: October 31, 2006
    Publication date: June 28, 2007
    Inventors: Yoshinori Suzuki, Eri Itami, Koichi Hatori, Yasuo Takagi, Yosuke Sasaki
  • Patent number: 7126968
    Abstract: In a data compression system for compressing an original time series data with a various waveform, a compression unit compresses the original time series data without damaging characteristics of waveform information in the various waveform. The waveform information includes a signal with a various change, especially, a sudden change of signal. An encoding unit encodes the compressed time series data so as to generate a compression code.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: October 24, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Wataro Shinohara, Yasuo Takagi
  • Patent number: 6983735
    Abstract: A control for controlling an intake air into an engine is provided. A control valve for adjusting an amount of the intake air into the engine is provided. A desired opening degree of a control valve provided in an intake air passage into the engine is determined based on a clogging coefficient. The clogging coefficient indicates a degree of clogging of the intake air passage. An opening degree of the control valve is controlled to converge to the desired opening degree. The clogging coefficient is updated based on a feedback correction amount for feedback controlling a rotational speed of the engine during idling operation. If a leakage in a blow-by gas passage that is connected between the engine and the intake air passage is detected, the update of the clogging coefficient is prohibited.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: January 10, 2006
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hirokazu Toyoshima, Naoki Oie, Masaaki Nagashima, Yasuo Takagi
  • Patent number: 6890280
    Abstract: An automatic power transmission to which a lubricating device of the invention is applied is of a type which has an operation mode wherein when, under rotation of an input shaft, a pinion carrier is prevented from making a revolution, pinions carried by the pinion carrier are rotated. The lubricating device comprises a first oil passage formed in a fixed wall of the transmission and connected with an oil supply source; a second oil passage formed in the input shaft, the input shaft being rotatably held by the fixed wall; a third oil passage formed in the pinion carrier to feed the pinions with the lubrication oil, the pinion carrier being concentrically disposed around an axis of the input shaft; a first connection passage connecting the first and second oil passages; and a second connection passage connecting the first and third oil passages.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: May 10, 2005
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toshikazu Oshidari, Masaki Nakano, Yasuo Takagi
  • Publication number: 20050066937
    Abstract: A control for controlling an intake air into an engine is provided. A control valve for adjusting an amount of the intake air into the engine is provided. A desired opening degree of a control valve provided in an intake air passage into the engine is determined based on a clogging coefficient. The clogging coefficient indicates a degree of clogging of the intake air passage. An opening degree of the control valve is controlled to converge to the desired opening degree. The clogging coefficient is updated based on a feedback correction amount for feedback controlling a rotational speed of the engine during idling operation. If a leakage in a blow-by gas passage that is connected between the engine and the intake air passage is detected, the update of the clogging coefficient is prohibited.
    Type: Application
    Filed: August 12, 2004
    Publication date: March 31, 2005
    Inventors: Hirokazu Toyoshima, Naoki Oie, Masaaki Nagashima, Yasuo Takagi
  • Patent number: 6838176
    Abstract: Epoxy resin compositions comprising (a) an epoxy resin, (b) a latent curing agent with curing power at 100° C. or below and (c) an aromatic amine-based curing agent and/or an alicyclic amine-based curing agent, which are curable in two stages, or epoxy resin compositions further comprising (d) a curing accelerator, as well as a prepregs comprising reinforcing fiber materials impregnated with the epoxy resin compositions. The compositions give die-releasable cured products by primary curing at low temperature, give highly heat-resistant cured products by secondary curing, and exhibit satisfactory stability at room temperature.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: January 4, 2005
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Kazuya Goto, Shigetsugu Hayashi, Tadayoshi Saito, Takashi Kaneko, Kazutami Mitani, Koki Wakabayashi, Yasuo Takagi
  • Publication number: 20040060774
    Abstract: An automatic power transmission to which a lubricating device of the invention is applied is of a type which has an operation mode wherein when, under rotation of an input shaft, a pinion carrier is prevented from making a revolution, pinions carried by the pinion carrier are rotated. The lubricating device comprises a first oil passage formed in a fixed wall of the transmission and connected with an oil supply source; a second oil passage formed in the input shaft, the input shaft being rotatably held by the fixed wall; a third oil passage formed in the pinion carrier to feed the pinions with the lubrication oil, the pinion carrier being concentrically disposed around an axis of the input shaft; a first connection passage connecting the first and second oil passages; and a second connection passage connecting the first and third oil passages.
    Type: Application
    Filed: September 5, 2003
    Publication date: April 1, 2004
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Toshikazu Oshidari, Masaki Nakano, Yasuo Takagi
  • Patent number: 6701891
    Abstract: There is provided a throttle control system and method for an internal combustion engine as well as an engine control unit, which are capable of controlling a throttle valve without any trouble even when the throttle valve is frozen. The throttle control system controls the degree of opening of the throttle valve. The opening of the throttle valve detected during control of the throttle valve to a fully-closed position at a start of the engine is set to a smallest angle. A temperature of the throttle valve is detected. A lower limit value of the target degree of opening is set to a degree of opening larger than the detected smallest angle of the throttle valve, when the detected smallest angle is larger than a predetermined degree of opening and at the same time the detected temperature of the throttle valve is lower than a predetermined temperature.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: March 9, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Manabu Niki, Eisei Yamazaki, Manabu Sekine, Takeru Tajima, Yasuo Takagi
  • Publication number: 20030135011
    Abstract: Epoxy resin compositions comprising (a) an epoxy resin, (b) a latent curing agent with curing power at 100° C. or below and (c) an aromatic amine-based curing agent and/or an alicyclic amine-based curing agent, which are curable in two stages, or epoxy resin compositions further comprising (d) a curing accelerator, as well as a prepregs comprising reinforcing fiber materials impregnated with the epoxy resin compositions. The compositions give die-releasable cured products by primary curing at low temperature, give highly heat-resistant cured products by secondary curing, and exhibit satisfactory stability at room temperature.
    Type: Application
    Filed: October 21, 2002
    Publication date: July 17, 2003
    Inventors: Kazuya Goto, Shigetsugu Hayashi, Tadayoshi Saito, Takashi Kaneko, Kazutami Mitani, Koki Wakabayashi, Yasuo Takagi
  • Publication number: 20030075146
    Abstract: There is provided a throttle control system and method for an internal combustion engine as well as an engine control unit, which are capable of controlling a throttle valve without any trouble even when the throttle valve is frozen. The throttle control system controls the degree of opening of the throttle valve. The opening of the throttle valve detected during control of the throttle valve to a fully-closed position at a start of the engine is set to a smallest angle. A temperature of the throttle valve is detected. A lower limit value of the target degree of opening is set to a degree of opening larger than the detected smallest angle of the throttle valve, when the detected smallest angle is larger than a predetermined degree of opening and at the same time the detected temperature of the throttle valve is lower than a predetermined temperature.
    Type: Application
    Filed: October 22, 2002
    Publication date: April 24, 2003
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Manabu Niki, Eisei Yamazaki, Manabu Sekine, Takeru Tajima, Yasuo Takagi
  • Patent number: 6342829
    Abstract: A sensor comprises a linear region (variable region) in which the output voltage is changed in proportion to the accelerator opening degree, and a stepped region (invariable region) in which the output voltage is not changed with respect to the accelerator opening degree. A resistor electrode for constructing the sensor is formed by laminating a resistor composed of a resistance substance on a base plate in a linear section corresponding to the linear region. In a stepped section corresponding to the stepped region, the resistor electrode is formed by laminating the resistor on a conductive layer composed of a conductive substance formed on the base plate.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: January 29, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yasuo Takagi, Shunichi Tsuzuki, Tsutomu Kobayashi, Yoshihiro Miyamoto
  • Publication number: 20010003527
    Abstract: In a data compression system for compressing an original time series data with a various waveform, a compression unit compresses the original time series data without damaging characteristics of waveform information in the various waveform. The waveform information includes a signal with a various change, especially, a sudden change of signal. An encoding unit encodes the compressed time series data so as to generate a compression code.
    Type: Application
    Filed: December 8, 2000
    Publication date: June 14, 2001
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Wataro Shinohara, Yasuo Takagi
  • Patent number: 6243610
    Abstract: In a controlled object, a process variable of a controlled object process is detected by a sensor and its detection time is measured by a timer. A process signal transmitting device transmits, as a process signal, the process variable and the detection time to a control apparatus. A control variable calculating device calculates a control variable based on the received process variable and a control reference value, and transmits a control signal including the control variable and the received process variable detection time to the controlled object. In the controlled object, a control signal receiving device calculates a transmission delay, that is, a difference between control signal reception time that is measured by the timer and the transmitted process variable detection time, corrects the control variable by processing it in accordance with the transmission delay, and drives an actuator by using the corrected control variable.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: June 5, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Iino, Kenji Mitsumoto, Yasuo Takagi