Patents by Inventor Takashi Koyama

Takashi Koyama 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: 20140130753
    Abstract: The present invention is intended to provide a technique which makes effective use of a phase transition temperature zone of cooling water by controlling a control valve for changing the temperature of the cooling water in an appropriate manner. The present invention resides in a cooling water temperature control apparatus for an internal combustion engine in which cooling water is caused to circulate, said cooling water having variable specific heat, said apparatus comprising: a received heat amount calculation unit configured to calculate an amount of received heat which is received by said cooling water, a control valve that is controlled to open and close according to a command so as to change a circulation route or an amount of circulation of said cooling water and to change the temperature of said cooling water, and a control unit configured to control said control valve based on the amount of received heat which is calculated by said received heat amount calculation unit.
    Type: Application
    Filed: April 28, 2011
    Publication date: May 15, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Koyama, Koichiro Nakatani, Akira Yamashita
  • Publication number: 20140098278
    Abstract: A lens barrel includes a cam ring that includes a first cam sliding part and a second cam sliding part, and that is rotated in a direction around an optical axis; a fixing and holding barrel in which the cam ring is disposed; a moving ring that includes a first cam engagement part and a second cam engagement part, and that is moved in an optical axis direction; and an optical element that is moved in connection with movement of the moving ring. In a part of a movement range of the moving ring, one of the first cam engagement part and the second cam engagement part is engaged with the first cam sliding part or the second cam sliding part, and another one of the first cam engagement part and the second cam engagement part is positioned on an outside of the cam ring in the optical axis direction.
    Type: Application
    Filed: September 18, 2013
    Publication date: April 10, 2014
    Applicant: SONY CORPORATION
    Inventors: Takashi Koyama, Hideki Ootsuka
  • Patent number: 8637201
    Abstract: A cooling system is provided.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: January 28, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keigo Suematsu, Yuichi Sakajo, Masanori Uehara, Takashi Koyama
  • Patent number: 8570666
    Abstract: A lens barrel according to an embodiment of the present invention includes a fixed barrel, a movable member that is movable relative to the fixed barrel, a flexible circuit board that is bent in a U-shape and hangs between the fixed barrel and the movable member, and a flexible circuit board guide. The flexible circuit board guide secures one side of the flexible circuit board that is continuous with the bent portion of the flexible circuit board to the fixed barrel while the one side of the flexible circuit board extends in a moving direction of the movable member.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: October 29, 2013
    Assignee: Sony Corporation
    Inventor: Takashi Koyama
  • Publication number: 20130139767
    Abstract: A cooling system for a piston of an internal combustion engine includes a cooling channel (34) designed as an oil passage embedded in the piston and arranged adjacent to a top ring groove, and an oil supply portion (8) that supplies oil to the cooling channel. An amount of oil supplied from the oil supply portion to the cooling channel is made larger when an amount of heat generated in a combustion chamber is large than when the amount of heat generated in the combustion chamber is small.
    Type: Application
    Filed: June 6, 2011
    Publication date: June 6, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, ART METAL MFG, CO., LTD., TPR CO., LTD.
    Inventors: Takashi Koyama, Naoki Umeda, Masao Ishida, Satoshi Nagata, Kenichi Harashina, Hideaki Nakasone, Ichiro Tsukada, Akinori Toyoshima, Masaya Hirano
  • Patent number: 8413636
    Abstract: The temperature of the fuel is raised without consuming the fuel in a fuel injection apparatus for an internal combustion engine. The fuel injection apparatus for the internal combustion engine comprises judging means which judges whether or not a fuel cut state, in which supply of fuel to the internal combustion engine is temporarily stopped during deceleration of a vehicle, is given; and discharge means which discharges the fuel by means of a motive power applied from a rotary shaft of the internal combustion engine; the fuel injection apparatus for the internal combustion engine further comprising increasing means which increases work of the discharge means when it is judged by the judging means that the fuel cut state is given as compared with when it is not judged by the judging means that the fuel cut state is given.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: April 9, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takashi Suzuki, Takashi Koyama
  • Patent number: 8351010
    Abstract: Disclosed herein is a liquid crystal module having a liquid crystal display panel, and a backlight unit disposed on a back surface of the liquid crystal display panel. The liquid crystal display panel has a flexible printed wiring circuit substrate for a liquid crystal display panel. The backlight unit has a light guiding plate, a light emitting diode for emitting a light, a flexible printed wiring circuit substrate for a light emitting diode, and a case in which the light guiding plate and the flexible printed wiring circuit substrate for a light emitting diode are accommodated. The flexible printed wiring circuit substrate for a liquid crystal display panel extends along a side surface of the case. The flexible printed wiring circuit substrate for a light emitting diode has a derivation portion.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: January 8, 2013
    Assignee: Sony Corporation
    Inventors: Takashi Koyama, Hideo Takahashi
  • Publication number: 20120247746
    Abstract: The vehicle control apparatus configured to control a vehicle includes a fuel cell configured to supply electric power to the vehicle; an air conditioning mechanism having a heater core; a first medium circuit; a radiator installed in the first medium circuit; a bypass circuit formed in the first medium circuit to make a bypass flow of the cooling medium bypassing the radiator; a regulation valve installed in the first medium circuit to regulate a ratio of a flow rate of the cooling medium going through the radiator to a flow rate of the cooling medium going through the bypass circuit; a second medium circuit; a cooling medium circulation pump installed in at least one of the first medium circuit and the second medium circuit; a temperature acquisition module; a warm-up controller; and a state switchover structure.
    Type: Application
    Filed: August 25, 2010
    Publication date: October 4, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi Sakajo, Keigo Suematsu, Yoshiaki Naganuma, Masanori Uehara, Takashi Koyama
  • Patent number: 8261755
    Abstract: An object of the present invention is to control the discharge amount of unburned fuel components in the internal combustion engine. According the present invention, the number of times of execution of sub fuel injection is changed based on the operation range within which the operation state of the internal combustion engine falls so that the lower the engine load of the internal combustion engine is, and the lower the number of engine revolutions of the internal combustion engine is, the more the number of times of execution of sub fuel injection is increased. Furthermore, the lower the atmospheric pressure is, the lower the temperature of the cooling water of the internal combustion engine is, or the lower the temperature of the intake air of the internal combustion engine is, the more an operation range in which the number of times of execution of sub fuel injection is large is expanded to higher loads and higher revolutions.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: September 11, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takashi Koyama, Hisashi Ohki, Masahiro Nagae, Kiyoshi Fujiwara, Tomohiro Kaneko, Takafumi Yamada, Hajime Shimizu, Seiji Ogura
  • Patent number: 8131449
    Abstract: A fuel injection valve coupled to a common rail is provided. When fuel injection is carried out, the fuel pressure in the fuel injection valve pulsates. An interval between a pilot injection and a main injection is set so that the main injection is carried out at a zero gradient timing as a timing when the gradient of the fuel pressure in the fuel injection valve after the pilot injection is approximately equal to zero. Owing to a fuel injection control apparatus and a fuel injection control method for an internal combustion engine that perform the above-mentioned control, the fuel injection amount for the subsequent fuel injection following the preceding fuel injection can be reliably held equal to a normal amount.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: March 6, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takashi Koyama, Hisashi Ohki, Kiyoshi Fujiwara, Tomohiro Kaneko, Takahumi Yamada
  • Patent number: D669930
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: October 30, 2012
    Assignee: Sony Corporation
    Inventors: Takashi Koyama, Nobuharu Murashima, Yoshiharu Tanaka
  • Patent number: D670751
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: November 13, 2012
    Assignee: Sony Corporation
    Inventors: Takashi Koyama, Nobuharu Murashima, Yoshiharu Tanaka
  • Patent number: D688292
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: August 20, 2013
    Assignee: Sony Corporation
    Inventors: Takashi Koyama, Nobuharu Murashima, Yoshiharu Tanaka
  • Patent number: D705036
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 20, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takashi Koyama, Masayuki Fushimi
  • Patent number: D705405
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 20, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takashi Koyama, Masayuki Fushimi
  • Patent number: D705448
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 20, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takashi Koyama, Masayuki Fushimi
  • Patent number: D705905
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 27, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takashi Koyama, Masayuki Fushimi
  • Patent number: D705907
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 27, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takashi Koyama, Masayuki Fushimi
  • Patent number: D705908
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 27, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takashi Koyama, Masayuki Fushimi
  • Patent number: D705909
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 27, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takashi Koyama, Masayuki Fushimi