Patents by Inventor Hiroaki Takehara

Hiroaki Takehara 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: 20150299985
    Abstract: A hybrid work machine includes: an engine; a generator motor connected to an output shaft of the engine; a storage battery configured to store power generated by the generator motor and supply power to the generator motor; a motor configured to be driven by at least one of power generated by the generator motor and power stored in the storage battery; a transformer disposed between the storage battery and both the generator motor and the motor; and a control unit configured to stop the transformer at a time of satisfying a plurality of conditions including a condition that the engine is in an idling state and a condition that a motor driving command to drive the motor is not output.
    Type: Application
    Filed: July 24, 2013
    Publication date: October 22, 2015
    Applicant: KOMATSU LTD.
    Inventors: Kazuki TAKEHARA, Hiroaki TAKEHARA, Tomotaka IMAI
  • Publication number: 20150028235
    Abstract: Provided is a valve formed of a shape-memory polymer disposed in a flow channel, in which a flow of fluid in the flow channel is adjusted by deformation of the valve.
    Type: Application
    Filed: October 10, 2014
    Publication date: January 29, 2015
    Applicants: The University of Tokyo, NIKON CORPORATION
    Inventors: Takanori ICHIKI, Hiroaki TAKEHARA, Hirofumi SHIONO
  • Patent number: 8420298
    Abstract: An object of the present invention is to provide a method for producing a cross-linked polyvinyl acetal resin, which can provide a cross-linked polyvinyl acetal resin having high mechanical strength and excellent solvent resistance by a simple method without a cross-linking agent, and can solve such problems as sheet attack, insufficient strength, and instability of viscosity for a long-time storage, and another object of the present invention is to provide a cross-linked polyvinyl acetal resin produced by the above method for producing a cross-linked polyvinyl acetal resin.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: April 16, 2013
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Yuki Hirose, Hiroaki Takehara, Motokuni Ichitani, Takayuki Maeda
  • Publication number: 20100112480
    Abstract: An object of the present invention is to provide a method for producing a cross-linked polyvinyl acetal resin, which can provide a cross-linked polyvinyl acetal resin having high mechanical strength and excellent solvent resistance by a simple method without a cross-linking agent, and can solve such problems as sheet attack, insufficient strength, and instability of viscosity for a long-time storage, and another object of the present invention is to provide a cross-linked polyvinyl acetal resin produced by the above method for producing a cross-linked polyvinyl acetal resin.
    Type: Application
    Filed: April 11, 2008
    Publication date: May 6, 2010
    Inventors: Yuki Hirose, Hiroaki Takehara, Motokuni Ichitani, Takayuki Maeda
  • Publication number: 20080207162
    Abstract: A notification method performed by a computer that includes a helper-information management table having recorded thereon positional information designating locations of helpers in accordance with helper terminal devices owned by said helpers, and a juvenile-information management table having recorded thereon mobile-terminal identification information and facial photos of juveniles, said mobile-terminal identification information being used for uniquely designating each of mobile terminal devices owned by said juveniles.
    Type: Application
    Filed: February 25, 2008
    Publication date: August 28, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Hiroaki TAKEHARA, Tomohisa MISAWA
  • Publication number: 20060140845
    Abstract: A method for producing fullerenes is disclosed wherein a hydrocarbon-containing material gas and an oxygen-containing gas are discharged into a fullerene reactor (11) through a discharge portion (21) of a burner (16) arranged in the fullerene reactor (11), and burned to produce fullerenes. In this method, an average discharge rate at which the hydrocarbon-containing material gas and oxygen-containing gas are discharged through the discharge portion (21) into the fullerene reactor (11) is set at a rate higher than 0.75 m/s but not higher than 10 m/s, preferably at a rate not lower than 1 m/s but not higher than 6 m/s, thereby increasing fullerene yield relative to carbon in the hydrocarbon-containing material gas and fullerene content in produced soot-like material. With this method, production volume of fullerenes per unit time can be increased when compared with the conventional methods.
    Type: Application
    Filed: June 7, 2004
    Publication date: June 29, 2006
    Inventor: Hiroaki Takehara
  • Publication number: 20050129608
    Abstract: A hydrocarbon fuel is either imperfectly combusted or thermally decomposed in a reactor 11, thereby producing a high-temperature gas flow containing fullerenes and soot. A mixture of the fullerenes and soot is collected from the gas flow using a filtering unit 12 which includes a heat-resistant filtering member made of either a porous ceramic material or a porous metal material. The fullerenes are collected from the mixture by usual means. These processes according to the method of the present invention make it possible to produce a large amount of fullerenes.
    Type: Application
    Filed: December 16, 2003
    Publication date: June 16, 2005
    Inventors: Hiroaki Takehara, Tsuyoshi Takakura, Mineyuki Arikawa
  • Publication number: 20050129607
    Abstract: A hydrocarbon fuel is either imperfectly combusted or thermally decomposed in a reactor 11, thereby producing a high-temperature gas flow containing fullerenes and soot. Then, the gas flow from the reactor 11 is cooled in a range of over 600 to 900° C. by a temperature adjustment unit 12. Consequently, the cooled gas flow is introduced to a first filter, and the soot contained in the gas flow is removed. The gas flow having passed through the first filter is further cooled to collect the fullerenes as solid. In this case, a second filter is used according to need.
    Type: Application
    Filed: December 16, 2003
    Publication date: June 16, 2005
    Inventors: Hiroaki Takehara, Tsuyoshi Takakura, Mineyuki Arikawa
  • Patent number: 6489074
    Abstract: A toner resin composition characterized as containing a vinyl copolymer prepared principally from a styrene monomer and a (meth)acrylic ester monomer and showing peaks at least in the molecular weight range of 5,000-20,000 and in the molecular weight range of not below 500,000 when its molecular weight distribution is determined by gel permeation chromatography, 2-10% by weight of Fischer-Tropsch wax, and 0.5-5% by weight of styrenic block copolymer; and a toner incorporating the toner resin composition.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: December 3, 2002
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Hiroaki Takehara, Takashi Shinjo
  • Publication number: 20020090325
    Abstract: A carbon black producing apparatus comprising a first reaction zone (1) where an oxygen-containing gas and fuel are supplied into the reactor and burned to form a combustion gas flow, a second reaction zone (2) disposed downstream of the first reaction zone and having a feedstock hydrocarbon feed port or ports for supplying a feedstock hydrocarbon to the combustion gas flow, whereby the feedstock hydrocarbon is reacted to produce carbon black, and a third reaction zone (3) disposed downstream of the second reaction zone and designed to stop the reaction, wherein in the first reaction zone, fuel feed port(s) (5) and oxygen-containing gas feed port(s) (6) are provided independently spaced-apart from each other and opened into the reactor from the same side thereof.
    Type: Application
    Filed: November 26, 2001
    Publication date: July 11, 2002
    Inventors: Toshiaki Hasegawa, Yoshio Watanabe, Yutaka Fukuyama, Tatsuhiko Yamazawa, Hiroaki Takehara, Takaharu Yamamoto
  • Patent number: 6358487
    Abstract: A carbon black having an average particle size of at most 13 nm, Dmod of at most 80 nm, a D½/Dmod ratio of at most 0.6 and at least pH 5.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: March 19, 2002
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoshihiro Omae, Nobutake Mise, Yutaka Fukuyama, Yuuichi Sekine, Takaharu Yamamoto, Hiroaki Takehara, Tsuyoshi Yamaguchi, Susumu Nakajima, Masanobu Ishida, Mamoru Nakayama, Hiroshi Maeda
  • Patent number: 6190816
    Abstract: A toner resin composition composed of a vinyl-type copolymer which has styrene-type monomers and (meth)acrylic ester-type monomers as the main ingredients, a low-melting-point crystalline compound, and a block compolymer of polystyrene and polyolefin wherein the average particle area is 0.5-20 &mgr;m2 and the maximum particle area is 30 &mgr;m2 or less in any 25 &mgr;m×25 &mgr;m area when transmission electron microscopy is used to observe said low-melting-point crystalline compound which forms domains in the domain-matrix structure formed by said vinyl-type copolymer and the low-melting-point crystalline compound. To provide a toner resin composition and toner which have superior fixability, anti-offset properties, and shelf stability.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: February 20, 2001
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Hiroaki Takehara, Takashi Ueyama, Masazumi Okudo
  • Patent number: 6106988
    Abstract: A toner resin composition, as well as a toner prepared therefrom, are disclosed which are excellent in fixability, offset resistance and storage stability, and which result in reduced occurrence of DF staining.The toner resin composition includes (a) a vinyl copolymer containing 25 or lower % by weight of molecular species having molecular weights of 200,000 or higher; and (b) 3 to 10% by weight of ethylene-based olefin polymer which has a DSC-determined peak (melting point) within a range of 85-100.degree. C., a weight average molecular weight (Mw) within a range of 500-900, a number average molecular weight (Mn) within a range of 500-900, and a melt viscosity of 10 to 17 cps at 100.degree. C.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: August 22, 2000
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Toshiharu Furukawa, Takashi Ueyama, Hiroaki Takehara, Masazumi Okudo