Patents by Inventor Hidefumi Araki

Hidefumi Araki 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: 7587887
    Abstract: An advanced humid air turbine power plant capable of suppressing condensation of moisture in a cooling channel, which is provided to cool a high-temperature component of a gas turbine, in a start up stage, a coast down stage, and a load varying state of the gas turbine. In the advanced humid air turbine power plant comprising a compressed air supply line for supplying compressed air generated by a compressor to the high-temperature component of the gas turbine, and a humidified air supply line for supplying humidified air generated in a humidifying tower to the high-temperature component of the gas turbine, the power plant further comprises valves capable of adjusting respective air flow rates in the compressed air supply line and the humidified air supply line.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: September 15, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiro Horiuchi, Shinya Marushima, Hidefumi Araki, Shigeo Hatamiya
  • Publication number: 20090169494
    Abstract: The present invention is a sunscreen cosmetic comprising 2,4-bis[[4-(2-ethylhexyloxy)-2-hydroxy]phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine and a specific benzotriazole derivative. Also, the present invention is a sunscreen cosmetic comprising a specific benzotriazole derivative and a specific alkylaryl 1,3-propanedione silicone derivative. An object of the present invention is to provide a sunscreen cosmetic that exhibits superior UV-A absorption capacity and excellent stability and also sufficiently dissolves 2,4-bis[[4-(2-ethylhexyloxy)-2-hydroxy]phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine, which has low solubility and crystallizes easily. Another object is to provide a sunscreen cosmetic that can synergistically improve the ultraviolet absorption capacity of conventional ultraviolet absorbents.
    Type: Application
    Filed: September 29, 2006
    Publication date: July 2, 2009
    Applicant: Shiseido Company Ltd
    Inventors: Koji Abe, Nozomi Oguchi, Isao Yajima, Hidefumi Araki, Hiroyuki Kakoki
  • Publication number: 20090056303
    Abstract: The amount of water to be injected in an intercooler is controlled to cool the compressed gas to the saturation temperature. It is difficult to adjust the amount of the water to be injected, however, since the temperature of the compressed gas at an intercooler outlet is actually higher than the saturation temperature. An intercooling system is configured so as to cool a gas to the saturation temperature without controlling the amount of water injection and thereby maintain the reliability of the compressor while improving the cooling efficiency. The intercooling system is located between a plurality of compression stages of a gas compressor to cool the gas that has been in the compressor. A desired amount of liquid is sprinkled to cool the compressed gas while restraining inflow of the liquid into the compression stages.
    Type: Application
    Filed: June 25, 2007
    Publication date: March 5, 2009
    Inventors: Hidefumi ARAKI, Takanori Shibata, Shigeo Hatamiya, Moriaki Tsukamoto
  • Patent number: 7444819
    Abstract: A gas turbine installation is provided in which turbine cooling air can be humidified with water while suppressing deterioration of the reliability of turbine blades. The gas turbine installation comprises a compressor for compressing air, a combustor for burning compressed air and fuel, a turbine driven by combustion gas, and a humidifier for humidifying the compressed air extracted from an intermediate stage or a discharge section of the compressor. The compressed air humidified by the humidifier is used as turbine cooling air. The humidifier includes a water distributor for adjusting an amount of water added to the compressed air.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: November 4, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Takanori Shibata, Shinya Marushima, Nobuaki Kizuka, Hidefumi Araki, Shigeo Hanamiya
  • Publication number: 20080081080
    Abstract: The invention provides an oil-based skin treatment composition that contains antibacterial zeolite, an oil component, and glutathione and/or L-cysteine. The object of the invention is to provide an oil-based skin treatment composition that is blended with antibacterial zeolite and that has excellent washability when it has adhered to articles of clothing.
    Type: Application
    Filed: March 8, 2006
    Publication date: April 3, 2008
    Inventors: Hidefumi Araki, Hirokazu Ishino
  • Publication number: 20080053127
    Abstract: A heat pump includes an evaporator 10 evaporating water; a steam compressor 1 compressing the vapor generated by the evaporator 10; a vapor supply duct 31 adapted to supply the vapor 30 compressed by the compressor 1 to steam-utilizing facility 2; a measuring device 91 for measuring a state of vapor between the evaporator 10 and the compressor 1; and a valve 81 adjusting an amount of vapor flowing in the compressor 1 based on information from the measuring device 91.
    Type: Application
    Filed: August 17, 2007
    Publication date: March 6, 2008
    Inventors: Yasuo TAKAHASHI, Takanori Shibata, Hidefumi Araki
  • Publication number: 20070253989
    Abstract: The present invention provides a modified powder that is obtainable by coating the surface of a base powder with a hydrophobizing agent and a cationic surfactant. In the modified powder described above, it is preferable that the amount of coated hydrophobizing agent and the amount of coated cationic surfactant are 3 to 90% by mass and 0.5 to 10% by mass, respectively, relative to the self weight of the base powder. In the modified powder described above, it is preferable that the mass ratio of the coated hydrophobizing agent and the coated cationic surfactant is from 1:1 to 9:1. In addition, the present invention provides a cosmetic composition comprising the above modified powder wherein the modified powder and the base powder have an ultraviolet scattering effect. In the cosmetic composition described above, it is preferable that the blended amount of the modified powder is from 0.5 to 100% by mass.
    Type: Application
    Filed: December 13, 2005
    Publication date: November 1, 2007
    Applicant: SHISEIDO CO., LTD.
    Inventors: Koji Abe, Hidefumi Araki, Shuji Nishihama, Tetsuya Kanemaru
  • Patent number: 7251926
    Abstract: A plate-fin type regenerative heat exchanger is provided which can prevent clogging of a flow passage caused by a drift of liquid phase water even when compressed air contains a large amount of moisture and liquid droplets. The plate-fin type regenerative heat exchanger comprises a corrugated fin channel for heating compressed air containing liquid droplets and a corrugated fin channel to which the compressed air containing no liquid droplets is supplied. A pitch of fin members of the former corrugated fin channel is set to the Laplace length, whereby bridging of the liquid droplets between the fin members can be prevented.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: August 7, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae, Hidefumi Araki
  • Publication number: 20070017205
    Abstract: A gas turbine equipment utilizing high humidity, for preventing generation of white smoke throughout a year, and for restraining radiation of extra heat so as to restrain lowering of heat efficiency, the equipment comprising a humidifying device for humidifying compressed gas for combustion, a heat recovery device for recovering exhaust heat from a gas turbine or the compressed air so as to heat humidifying water in the humidifying device, a recuperator for recovering exhaust heat from the gas turbine and heating the compressed gas for combustion, a dehumidifying device for dehumidifying and recovering moisture in the exhaust gas having passed through the recuperator, and an exhaust gas reheater for heating the exhaust gas after dehumidification, and further comprising a temperature measuring device for measuring a temperature of the exhaust gas passing through the exhaust gas reheater, and a heating temperature adjusting device for increasing the heating temperature of the exhaust gas reheater if a temperatu
    Type: Application
    Filed: July 5, 2006
    Publication date: January 25, 2007
    Inventors: Kenji Sasaki, Hidefumi Araki, Yukinori Katagiri, Moriaki Tsukamoto, Shinichi Hoizumi
  • Publication number: 20070017227
    Abstract: An advanced humid air turbine power plant capable of suppressing condensation of moisture in a cooling channel, which is provided to cool a high-temperature component of a gas turbine, in a start up stage, a coast down stage, and a load varying state of the gas turbine. In the advanced humid air turbine power plant comprising a compressed air supply line for supplying compressed air generated by a compressor to the high-temperature component of the gas turbine, and a humidified air supply line for supplying humidified air generated in a humidifying tower to the high-temperature component of the gas turbine, the power plant further comprises valves capable of adjusting respective air flow rates in the compressed air supply line and the humidified air supply line.
    Type: Application
    Filed: June 28, 2005
    Publication date: January 25, 2007
    Inventors: Yasuhiro Horiuchi, Shinya Marushima, Hidefumi Araki, Shigeo Hatamiya
  • Publication number: 20050097881
    Abstract: A plate-fin type regenerative heat exchanger is provided which can prevent clogging of a flow passage caused by a drift of liquid phase water even when compressed air contains a large amount of moisture and liquid droplets. The plate-fin type regenerative heat exchanger comprises a corrugated fin channel for heating compressed air containing liquid droplets and a corrugated fin channel to which the compressed air containing no liquid droplets is supplied. A pitch of fin members of the former corrugated fin channel is set to the Laplace length, whereby bridging of the liquid droplets between the fin members can be prevented.
    Type: Application
    Filed: June 24, 2004
    Publication date: May 12, 2005
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae, Hidefumi Araki
  • Publication number: 20050066664
    Abstract: A gas turbine installation is provided in which turbine cooling air can be humidified with water while suppressing deterioration of the reliability of turbine blades. The gas turbine installation comprises a compressor for compressing air, a combustor for burning compressed air and fuel, a turbine driven by combustion gas, and a humidifier for humidifying the compressed air extracted from an intermediate stage or a discharge section of the compressor. The compressed air humidified by the humidifier is used as turbine cooling air. The humidifier includes a water distributor for adjusting an amount of water added to the compressed air.
    Type: Application
    Filed: September 28, 2004
    Publication date: March 31, 2005
    Inventors: Takanori Shibata, Shinya Marushima, Nobuaki Kizuka, Hidefumi Araki, Shigeo Hanamiya
  • Patent number: 5491730
    Abstract: Pipes are mounted horizontally on an outlet portion of a gas vent pipe in a condenser-type heat removal system, and have-openings which are formed only in a portion below a horizontal plane in which axes of these pipes lie, thereby enlarging a region where uncondensed steam is mixed with water in a suppression pool. With this arrangement, a surface portion of the water of the suppression pool is prevented from becoming hot, and the temperature of this pool water is uniformed. As a result, the temperature of the water surface of the suppression pool is lowered, thereby decreasing the pressure within a primary containment vessel. This enhances the reliability of the primary containment vessel, and reduces a design strength of the primary containment vessel.
    Type: Grant
    Filed: January 5, 1994
    Date of Patent: February 13, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiyuki Kataoka, Michio Murase, Hidefumi Araki, Yasutaka Iwata