Patents by Inventor Takao Ishikawa

Takao Ishikawa 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: 20080206116
    Abstract: The present invention is relates to a method for alternately laminating each first metal sheet and each second metal sheet in three or more layers, wherein a melting point of the second metal sheet is higher than that of the first metal sheet, and welding them together by friction stir welding. Furthermore, under a state where those three or more metal sheets are so laminated that an edge of the first metal sheet protrude outward compared to an edge of the second metal sheet, the friction stir welding is executed by pressing a welding tool against only the edge of the first metal sheet.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 28, 2008
    Inventors: Akihiro SATOU, Takao Ishikawa, Kinya Aota
  • Publication number: 20080146468
    Abstract: The present invention relates to a lubricant for lubricating relatively movable, facing contact surfaces at least one of which is coated with DLC, a method of lubricating DLC contact surfaces with this lubricant, and a system having DLC contact surfaces. The lubricant fulfills the following conditions (a) and (b): (a) the lubricant contains a lubricant base oil containing, as a main component, a base oil composed at least one of a hydrocracked mineral oil, a wax-isomerized mineral oil, and a poly-?-olefin base oil. The base oil has a kinematic viscosity of 2 to 20 mm2/s at 100° C., a total aromatic content of not higher than 5 mass %, and a sulfur content of 0.005 mass %; and (b) the lubricant has a sulfur content of not higher than 0.2 mass %.
    Type: Application
    Filed: August 6, 2004
    Publication date: June 19, 2008
    Applicants: Nippon Oil Corporation, Nissan Motor Co., LTD
    Inventors: Shozaburo Konishi, Makoto Kano, Takafumi Ueno, Takao Ishikawa
  • Publication number: 20080122120
    Abstract: An electronic component, includes a main body part inserted in an opening part formed in a board; and a pair of leads each of the leads having an end connected to the main body part and another end connected to a pad formed on the board; wherein the main body part is provided with the leads so that a functional surface of the main body part is positioned at a side connected to the pads of the board.
    Type: Application
    Filed: August 20, 2007
    Publication date: May 29, 2008
    Applicant: Fujitsu Limited
    Inventors: Masayuki Itoh, Takao Ishikawa, Tomokazu Nakashima
  • Patent number: 7375155
    Abstract: According to the present invention, there is provided a low dielectric loss tangent resin composition containing a crosslinking component having a weight average molecular weight of not more than 1,000 and a plurality of styrene groups and represented by the formula [1], wherein R is a hydrocarbon skeleton which may have a substituent, R1 is hydrogen, methyl or ethyl, m is an integer of 1-4 and n is an integer of 2 or more, and further containing at least one member selected from a high polymer having a weight average molecular weight of not less than 5,000 and a filler, which resin composition can give a cured product having a good flexibility, high tensile strength and low dielectric constant and dielectric loss tangent.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: May 20, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Amou, Shinji Yamada, Takao Ishikawa, Takao Miwa
  • Publication number: 20080110420
    Abstract: A hydrogen engine system for driving an engine with hydrogen gases as a fuel comprises a hydrogenated liquid fuel tank, which holds a hydrogenated liquid fuel in a liquid phase, a preheater, to which the hydrogenated liquid fuel and a dehydrogenated fuel from the hydrogen feed unit are transported and which preheats the hydrogenated liquid fuel owing to heat exchange, an vaporizer, to which the hydrogenated liquid fuel as preheated and exhaust gases of the engine are transported and which heats the hydrogenated liquid fuel to put the same in a vapor phase, and a hydrogen feed unit, to which the hydrogenated liquid fuel as vaporized and exhaust gases of the engine are transported and which generates hydrogen gases owing to dehydrogenation to transport the same to the engine.
    Type: Application
    Filed: October 3, 2007
    Publication date: May 15, 2008
    Inventors: Hirotoshi Ishimaru, Tetsuro Miyamoto, Takao Ishikawa, Atsushi Shimada, Masatoshi Sugimasa
  • Publication number: 20080052994
    Abstract: In a fuel tank for containing a hydrogen storing material and a product generated by dehydrogenation reaction of the hydrogen storing material, comprising, a fuel chamber for containing the hydrogen storing material, a waste chamber for containing the product, and a tank envelope for containing the fuel chamber and the waste chamber, the fuel tank further comprises a partition wall fluidly separating the fuel chamber and the waste chamber from each other and being movable to change a ratio in volume between the fuel chamber and the waste chamber, and each of the fuel chamber and the waste chamber has a valve to be hermetically closed.
    Type: Application
    Filed: August 10, 2007
    Publication date: March 6, 2008
    Inventors: Masafumi Nojima, Takao Ishikawa, Hiroshi Kanemoto, Takeyuki Itabashi
  • Patent number: 7318514
    Abstract: A low-friction sliding member in a transmission is at least one of sliding members which are in slidable contact with each other in presence of a transmission oil composition. The low-friction sliding member includes a base material having a sliding section. A hard carbon thin film is coated at a sliding surface of the sliding section of the base material. The hard carbon thin film contains hydrogen in an amount not more than 20 atomic %. The transmission oil composition contains at least one of organic oxygen-containing compound and aliphatic amine compound.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: January 15, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takao Ishikawa, Kiyotaka Nakamura, Makoto Kano, Takafumi Ueno
  • Patent number: 7298605
    Abstract: The present invention provides a low-cost electrolytic capacitor wherein the deformation of the casing due to the thermal expansion during reflowing is prevented. An electrolytic capacitor of a surface mounting type having a capacitor element that consists of a dielectric film and an electrode foil, a metal casing that holds the capacitor element, and an electrolyte solution in which the capacitor element held in the casing is immersed, wherein the casing is equipped with a gas absorbing member that absorbs the gas generated in the casing.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: November 20, 2007
    Assignee: Fujitsu Limited
    Inventors: Masayuki Itoh, Kiyokazu Moriizumi, Takao Ishikawa, Tomokazu Nakashima, Masako Okazaki
  • Publication number: 20070209609
    Abstract: An object of the invention is to provide an engine system driving an engine by using a hydrogen rich gas generated from a medium chemically repeating a hydrogen absorption and a hydrogen desorption as one of fuels, in which the engine system can efficiently generate a hydrogen rich gas from the medium. In an engine system which mounts a medium chemically repeating a hydrogen absorption and a hydrogen desorption thereon, is provided with a hydrogen supplying apparatus generating or storing a hydrogen rich gas from the medium, and drives an engine by using the hydrogen rich gas as one of fuels, the engine system has a detecting portion detecting an operating state of the engine, and a medium supplying amount control means controlling a supplying amount of the medium supplied to the hydrogen supplying apparatus in correspondence to a result of detection of the detecting portion.
    Type: Application
    Filed: January 25, 2007
    Publication date: September 13, 2007
    Applicant: Hitachi, Ltd.
    Inventors: Atsushi Shimada, Takao Ishikawa, Takeyuki Itabashi, Hiroshi Kanemoto
  • Publication number: 20070114653
    Abstract: A wiring glass substrate includes a glass substrate formed of glass and having a plurality of holes formed at predetermined positions, bumps so formed as to be connected to a conductive material filling the holes and wirings formed on a surface opposite to a surface having the bumps formed thereon and electrically connecting a plurality of connection terminals arranged in intervals different from intervals of the holes to the conductive material. The shape of the conductive material is porous and porous electrodes are bonded to the inner wall surfaces of the holes by an anchor effect to increase the strength of the glass substrate.
    Type: Application
    Filed: January 24, 2007
    Publication date: May 24, 2007
    Applicants: Hitachi, Ltd., Renesas Technology Corp.
    Inventors: Osamu Shiono, Takao Ishikawa, Takashi Namekawa, Yasutaka Suzuki, Takashi Naito, Hiroki Yamamoto, Daigoro Kamoto, Ken Takahashi, Tadanori Segawa, Toshiya Sato, Takao Miwa, Shigehisa Motowaki
  • Publication number: 20070068713
    Abstract: A highly-efficient and small-sized driving system which is suitable for use in an automobile using hydrogen as fuel, e.g., a hydrogen-engine hybrid vehicle or a fuel cell vehicle. In a hybrid automobile comprising a high-pressure hydrogen tank, a hydrogen engine using hydrogen as fuel, and a rotating device for generating or regenerating automobile driving energy, at least a part of hydrogen gas supplied from the high-pressure hydrogen tank is supplied to the hydrogen engine after being utilized to cool the rotating device.
    Type: Application
    Filed: September 28, 2006
    Publication date: March 29, 2007
    Applicant: Hitachi, Ltd.
    Inventors: Akiyoshi Komura, Kazumasa Ide, Takao Ishikawa
  • Patent number: 7193009
    Abstract: An electronic device for high frequency signals having a small dielectric loss and a high efficiency is provided, in which a low dielectric loss tangent resin composition is used, for coping with high frequency signals, as an insulating layer. The electronic device is fabricated using an insulating layer containing a crosslinked structure of a crosslinking ingredient represented by the following general formula (I): (where R represents a hydrocarbon skeleton, R1, which may be identical or different from each other, represents a hydrogen atom or a hydrocarbon group of 1 to 20 carbon atoms, R2, R3 and R4, which may be identical or different from each other, each represents a hydrogen atom or a hydrocarbon group of 1 to 6 carbon atoms, m is an integer of 1 to 4 and n is an integer of 2 or greater).
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: March 20, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Amou, Akira Nagai, Shinji Yamada, Takao Ishikawa, Akio Takahashi
  • Publication number: 20070060483
    Abstract: The present invention relates to a system wherein a pair of relatively movable, facing DLC contact surfaces at least one of which is coated with a DLC film, are further lowered in friction, and the low friction property is stably maintained. The present invention also relates to a lubricant for the system, and a lubricating method. The lubricant for the system having the DLC contact surfaces contains lubricant base oil (A) mainly composed of base oil (X), and sulfur-containing molybdenum complex (B). The base oil (X) is at least one of hydrocracked mineral oils, wax-isomerized mineral oils, and poly-?-olefin base oils, and has a kinematic viscosity of 2 to 20 mm2/s at 100° C., a total aromatic content of not higher than 5 mass %, and a total sulfur content of not higher than 0.005 mass %.
    Type: Application
    Filed: August 6, 2004
    Publication date: March 15, 2007
    Applicants: NIPPON OIL CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Shozaburo Konishi, Makoto Kano, Takafumi Ueno, Takao Ishikawa
  • Patent number: 7183650
    Abstract: A wiring glass substrate includes a glass substrate formed of glass and having a plurality of holes formed at predetermined positions, bumps so formed as to be connected to a conductive material filling the holes and wirings formed on a surface opposite to a surface having the bumps formed thereon and electrically connecting a plurality of connection terminals arranged in intervals different from intervals of the holes to the conductive material. The shape of the conductive material is porous and porous electrodes are bonded to the inner wall surfaces of the holes by an anchor effect to increase the strength of the glass substrate.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: February 27, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Osamu Shiono, Takao Ishikawa, Takashi Namekawa, Yasutaka Suzuki, Takashi Naito, Hiroki Yamamoto, Daigoro Kamoto, Ken Takahashi, Tadanori Segawa, Toshiya Sato, Takao Miwa, Shigehisa Motowaki
  • Publication number: 20070038388
    Abstract: Managing system for emissions environmental pollutants comprising: a measuring device for measuring a flow rate of a fuel supplied to a customer; an unit emission quantity storage device of environmentally influential substance for storing a unit emission quantity of an environmentally influential substance emitted when an unit flow rate of fuel is manufactured or processed; and an emission quantity computing device of environmentally influential substance for calculating, based on the fuel flow rate measured by the measuring device, and the unit emission quantity of the environmentally influential substance stored by the unit emission quantity storage device, an environmental emission quantity of the environmentally influential substance emitted when the fuel supplied to the customer is manufactured or processed.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 15, 2007
    Inventors: Masafumi Nojima, Takeyuki Itabashi, Takao Ishikawa, Hiroshi Kanemoto
  • Publication number: 20060285275
    Abstract: The present invention provides a low-cost electrolytic capacitor wherein the deformation of the casing due to the thermal expansion during reflowing is prevented. An electrolytic capacitor of a surface mounting type having a capacitor element that consists of a dielectric film and an electrode foil, a metal casing that holds the capacitor element, and an electrolyte solution in which the capacitor element held in the casing is immersed, wherein the casing is equipped with a gas absorbing member that absorbs the gas generated in the casing.
    Type: Application
    Filed: September 26, 2005
    Publication date: December 21, 2006
    Inventors: Masayuki Itoh, Kiyokazu Moriizumi, Takao Ishikawa, Tomokazu Nakashima, Masako Okazaki
  • Publication number: 20060263604
    Abstract: The invention provides a low-friction sliding mechanism, a low-friction agent composition, a friction reduction method, a manual transmission and a final reduction gear unit that can exert very excellent low friction characteristics to sliding surfaces present under various applications, and, in particular, that have more excellent low friction characteristics than that of a combination of an existing steel material and an organic Mo compound. The low-friction sliding mechanism has an oxygen-containing organic compound or an aliphatic amine compound interposed between sliding surfaces that a DLC coated sliding member and a sliding member form. The low-friction agent composition contains an oxygen-containing organic compound or an aliphatic amine compound. The friction reduction method includes supplying the low-friction agent composition between sliding surfaces that a DLC coated sliding member and a sliding member form.
    Type: Application
    Filed: August 6, 2004
    Publication date: November 23, 2006
    Inventors: Jean Martin, Shigeki Takeshima, Shozaburo Konishi, Makoto Kano, Yutaka Mabuchi, Takao Ishikawa, Takafumi Ueno, Kiyotaka Nakamura, Takahiro Hamada
  • Publication number: 20060231588
    Abstract: A hydrogen supplying apparatus equipped with a hydrogen separation membrane and a catalyst plate, which is made by forming a catalyst layer on a metal plate, wherein the metal material of the membrane is different in hardness from that of the catalyst plate. A method of producing the hydrogen supplying apparatus, which comprises: bonding a catalyst plate and a hydrogen separation membrane to each other, by friction-stir welding, wherein a welding tool is pressed towards only one of the membrane and catalyst plate, forming a reaction layer between the membrane and the catalyst plate by the frictional heat, and forming ripples in the welded interface.
    Type: Application
    Filed: April 12, 2006
    Publication date: October 19, 2006
    Inventors: Akihiro Sato, Takao Ishikawa, Kinya Aota
  • Patent number: 7112627
    Abstract: A curing low dielectric loss tangent film using a low dielectric loss tangent composition containing a polyfunctional styrene compound having excellent dielectric characteristics, and a wiring film using the same as an insulating layer are provided. The low dielectric loss tangent film contains a high molecular weight material and a crosslinking ingredient with a weight average molecular weight of 1000 or less having a plurality of styrene groups shown by the following general formula: (where R represents a hydrocarbon skeleton, R1, which may be identical or different with each other, represents a hydrogen atom or a hydrocarbon group of 1 to 20 carbon atoms, R2, R3 and R4, which may be identical or different with each other, each represents a hydrogen atom or an alkyl group of 1 to 6 carbon atoms, m represents an integer of 1 to 4, and n represents an integer of 2 or greater).
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: September 26, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Amou, Shinji Yamada, Takao Ishikawa, Akira Nagai, Masatoshi Sugimasa
  • Publication number: 20060204799
    Abstract: A hydrogen supply device which generates hydrogen from hydrogen storing material which chemically stores hydrogen by a catalyst, wherein said device comprises valves on the fuel supply port and the exhaust port, and a valve controller which controls timing to opening and close the valves Fuel supply pressure is 2 to 20 atm. Hydrogen generation pressure is 5 to 300 atm. Exhaust pressure is atmospheric pressure to 0.01 atm.
    Type: Application
    Filed: February 16, 2006
    Publication date: September 14, 2006
    Inventors: Takao Ishikawa, Hiroshi Kanemoto, Masafumi Noujima, Takeyuki Itabashi