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).

  • Patent number: 6992425
    Abstract: A high definition display apparatus having a wavelength selective absorption effect and an anti-static and anti-reflection effect is provided by thin films having a low resistance and a high refractive index. The high definition display apparatus has an anti-static and anti-reflection film composed of laminated oxide or metallic thin films, wherein at least three layers of oxide or metallic films having different reflectance from each other are laminated onto the front surf ace of the display apparatus, and the laminated films are composed such that an absorbing film containing coloring material is arranged under a high reflectance film as seen from the outer surface of the laminated films.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: January 31, 2006
    Assignees: Hitachi, Ltd., Hitachi-Device Engineering Co., Ltd.
    Inventors: Takao Ishikawa, Daigoro Kamoto, Tomoji Oishi, Ken Takahashi, Norikazu Uchiyama, Kiyoshi Miura, Masahiro Nishizawa, Toshio Tojo
  • Publication number: 20050277753
    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: Application
    Filed: July 11, 2005
    Publication date: December 15, 2005
    Inventors: Satoru Amou, Shinji Yamada, Takao Ishikawa, Takao Miwa
  • Publication number: 20050276749
    Abstract: A hydrogen fuel manufacturing system capable of efficiently producing each hydrogen fuel in accordance with a demanded quantity is disclosed. The system includes a hydrogen manufacturing apparatus for manufacturing hydrogen, more than two hydrogen fuel manufacturing apparatuses for manufacturing hydrogen fuels by letting the hydrogen produced by the hydrogen manufacturing apparatus change into a fuel-use form, wherein the fuel form to be manufactured by the hydrogen fuel manufacturing apparatuses is set to have more than two kinds. Additionally the system has a hydrogen fuel production volume receiver device for receipt of the information as to a hydrogen fuel production volume, thereby controlling the production volume of the hydrogen fuel being manufactured by the hydrogen fuel manufacturing apparatus, based on the hydrogen fuel production volume information as received by the hydrogen fuel production volume receiver device.
    Type: Application
    Filed: February 15, 2005
    Publication date: December 15, 2005
    Inventors: Masafumi Noujima, Takeyuki Itabashi, Takao Ishikawa, Hiroshi Kanemoto
  • Patent number: 6930140
    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: August 28, 2003
    Date of Patent: August 16, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Amou, Shinji Yamada, Takao Ishikawa, Takao Miwa
  • Patent number: 6928206
    Abstract: The invention provides an optical switch that consumes a less power, excels in a high-speed response, and possesses a structure suitable for a miniaturization and multi-channel switching. The optical switch switches a plurality of input signals to a plurality of output positions, in which a laminated structure that has a nonlinear optical layer and a buffer layer laminated in the same number as that of input parts intersects an optical path between the input parts and output parts. By providing the laminated structure using the nonlinear optical thin films, the invention achieves a small matrix optical switch excellent in a high-speed response and suitable for switching a large-capacity of information.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: August 9, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Mitsutoshi Honda, Yuichi Sawai, Takao Ishikawa, Takashi Naito
  • Publication number: 20050082139
    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: Application
    Filed: August 19, 2004
    Publication date: April 21, 2005
    Inventors: Takao Ishikawa, Kiyotaka Nakamura, Makoto Kano, Takafumi Ueno
  • Patent number: 6855952
    Abstract: A semiconductor device wherein a resin containing as a cross-linking component a compound having a plurality of styrene group and represented by chemical formula [1] is used as an insulating material: where R is a hydrocarbon structure which may have a substituent group or groups, R1 is hydrogen, methyl, or ethyl, m is and integer of 1 to 4, and n is an integer of not less than 2. With this, a semiconductor device and a semiconductor package which show excellent transmission characteristics and less power consumption are provided.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: February 15, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Akira Nagai, Satoru Amou, Shinji Yamada, Takao Ishikawa, Hiroshi Nakano
  • Publication number: 20040217455
    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 9, 2004
    Publication date: November 4, 2004
    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: 20040180157
    Abstract: It is an object of the present invention to provide a method capable of massively producing a tubular material, without needing time-consuming procedures, which can be easily made into a thin film or laminate.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 16, 2004
    Inventors: Takao Ishikawa, Shinji Yamada, Satoru Amou, Kishio Hidaka
  • Patent number: 6756441
    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: September 14, 2001
    Date of Patent: June 29, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Amou, Shinji Yamada, Takao Ishikawa, Takao Miwa
  • Publication number: 20040048965
    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], 1
    Type: Application
    Filed: August 28, 2003
    Publication date: March 11, 2004
    Inventors: Satoru Amou, Shinji Yamada, Takao Ishikawa, Takao Miwa
  • Publication number: 20040038021
    Abstract: A semiconductor device wherein a resin containing as a cross-linking component a compound having a plurality of styrene groups and represented by chemical formula [1] is used as an insulating material: 1
    Type: Application
    Filed: March 28, 2003
    Publication date: February 26, 2004
    Inventors: Akira Nagai, Satoru Amou, Shinji Yamada, Takao Ishikawa, Hiroshi Nakano
  • Publication number: 20040038611
    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.
    Type: Application
    Filed: March 12, 2003
    Publication date: February 26, 2004
    Inventors: Satoru Amou, Shinji Yamada, Takao Ishikawa, Akira Nagai, Masatoshi Sugimasa
  • Publication number: 20040039127
    Abstract: An electronic device for high frequency signals having a small dielectric loss and high efficiency is provided which has a low dielectric loss tangent resin composition for coping with high frequency signals as an insulating layer.
    Type: Application
    Filed: May 9, 2003
    Publication date: February 26, 2004
    Inventors: Satoru Amou, Akira Nagai, Shinji Yamada, Takao Ishikawa, Akio Takahashi
  • Publication number: 20030185489
    Abstract: The invention provides an optical switch that consumes a less power, excels in a high-speed response, and possesses a structure suitable for a miniaturization and multi-channel switching. The optical switch switches a plurality of input signals to a plurality of output positions, in which a laminated structure that has a nonlinear optical layer and a buffer layer laminated in the same number as that of input parts intersects an optical path between the input parts and output parts. By providing the laminated structure using the nonlinear optical thin films, the invention achieves a small matrix optical switch excellent in a high-speed response and suitable for switching a large-capacity of information.
    Type: Application
    Filed: August 22, 2002
    Publication date: October 2, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Mitsutoshi Honda, Yuichi Sawai, Takao Ishikawa, Takashi Naito
  • Publication number: 20020161091
    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], 1
    Type: Application
    Filed: September 14, 2001
    Publication date: October 31, 2002
    Inventors: Satoru Amou, Shinji Yamada, Takao Ishikawa, Takao Miwa
  • Patent number: 6337309
    Abstract: A zinc-free lubricating composition for lubricating a continuously variable transmission is disclosed, the lubricating composition comprising a mixture of a major amount of a lubricating oil and an effective amount of a performance enhancing additive combination comprising: (a) an ashless polyisobutenyl succinimide dispersant; (b) at least one organic thioether phosphite; (c) a calcium phenate overbased detergent at a concentration such that the total amount of calcium in the fluid is less than about 500 ppm; (d) friction modifiers comprising one or more succinimides and one or more ethoxylated amines; and (e) a primary amide of a long chain carboxylic acid.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: January 8, 2002
    Assignee: Infineum International LTD
    Inventors: Raymond F. Watts, Yasuhiro Murakami, Katherine M. Richard, Makoto Maeda, Yukio Ueda, Yoshi Arakawa, Takao Ishikawa
  • Patent number: 6232275
    Abstract: There is disclosed a lubricating oil composition for automatic transmissions which comprises a base oil comprising at least one oil selected from the group consisting of a mineral oil and a synthetic oil each having a specific kinematic viscosity and a % CA; (A) a non-boron based succinic acid imide (e.g. polybutenylsuccinic acid imide) and a boron based succinic acid imide each in an amount of 0.1 to 5% by weight based on the whole composition; (B) a condensation product of a branched chain fatty acid having 8 to 30 carbon atoms (e.g. isostearic acid) and an amine (e.g. tetraethylene-pentamine) in an amount of 0.05 to 2% by weight based on the same; and (C) a dialkyl hydrogenphosphite (e.g. dioleyl hydrogenphosphite) in an amount of 0.1 to 1% by weight based on the same, and optionally at least one member selected from viscosity index improvers, antioxidants, metal deactivators, defoaming agents, detergents, extreme pressure agents and rust preventives.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: May 15, 2001
    Assignees: Idemitsu Kosan Co., Ltd., Nissan Motor Co., Ltd.
    Inventors: Toshihiko Ichihashi, Masayuki Kato, Takao Ishikawa, Yasuhiro Murakami, Kazuo Umesato, Rika Yauchihara
  • Patent number: 6045764
    Abstract: An exhaust gas purifying catalyst is provided for purifying NOx contained in an exhaust gas from an internal combustion engine of a vehicle operated at a high air fuel ratio due to excessive oxygen, using unburnt HC or CO in the exhaust gas as a reducing agent. The catalyst comprises platinum, strontium and a rare earth metal, as active components, each supported on a support of inorganic oxide. The active components of the catalyst include platinum of 0.01-3.7 by wt ratio, strontium of 0.01-55 by wt ratio and a rare earth metal of 0.01-36 wt ratio, per the inorganic oxide of 100 by wt ratio.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: April 4, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Hidehiro Iizuka, Osamu Kuroda, Toshio Ogawa, Hisao Yamashita, Shigeru Azuhata, Yuichi Kitahara, Takeshi Atago, Hiroatsu Tokuda, Takao Ishikawa, Hiroshi Hanaoka, Hiroshi Tobita, Shinichi Ichikawa, Toshifumi Hiratsuka
  • Patent number: 6000444
    Abstract: A method and apparatus for filling bulk material, in which an objective filling weight for filling bulk material stored in a storage portion of a filling object is divided to a first stage objective filling weight and a second a second stage objective filling weight. The method consists of setting an opening/closing mechanism provided on the storage portion to a predetermined opening degree and filling the bulk material from the storage portion to the filling object until the first stage objective filling weight is reached, and then activating the opening/closing mechanism so as to close from the predetermined opening degree. A closing travel distance of the opening/closing mechanism in a certain minute time interval, and a filling weight of bulk material are then detected, and based on these detected values, the fluidity of the bulk material in such a minute time interval is calculated.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: December 14, 1999
    Assignee: Kao Corporation
    Inventors: Takao Ishikawa, Sigeru Akezawa, Nobuo Miyazaki, Takahiro Shinagawa