Patents by Inventor Masato Ishikawa

Masato 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: 20010039301
    Abstract: An oil ink for stencil printing includes oil solvent, a structural viscosity imparting material and a resin component. The resin component includes solid resin not lower than 1 in hexane tolerance and/or alkyd resin 60 to 90 in oil length and not larger than 80 in iodine value. The viscosity of the oil ink is in the range of 10 Pa·s to 50 Pa·s (at the shear rate of 10/s).
    Type: Application
    Filed: April 10, 2001
    Publication date: November 8, 2001
    Inventors: Masato Ishikawa, Hirotoshi Yonekwa, Shunsuke Uozumi, Tomoko Matsuura, Hiromichi Yamada
  • Patent number: 6271985
    Abstract: A magnetic disk device includes a base and a cover to enclose magnetic disks and magnetic heads therein. The cover has side flange portions extending downward from a top cover portion and an end flange portion extending downward from the top cover portion. The height of the end flange portion is greater than the height of the side flange portions. A bar code label can be attached to the end flange portion.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: August 7, 2001
    Assignee: Fujitsu Limited
    Inventor: Masato Ishikawa
  • Patent number: 6216120
    Abstract: One of prepared types of agent characteristics types is set to an agent, and parameters used in agent operation are set for values associated with the set agent characteristic type, thereby causing the agent to operate according to the agent characteristic type. An agent script base contains a plurality of operation descriptions. In response to a command from the user, parameters used in the execution of the command are set for the above values. The parameters are preferably kept in a table. Then, one of the operation descriptions associated with the command is executed referring to the table. Setting a user's characteristic type causes the set agent characteristic type to be changed to one associated with the user's characteristic type.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: April 10, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tsuyoshi Ueno, Masato Ishikawa, Hideki Yasukawa
  • Patent number: 6047311
    Abstract: The present invention provides an agent communication system, which can reduce special environment as far as possible, can interactively communicate with users, can cope with dynamic situations and can operate intelligently. The electronic mail passes through electronic mail delivery means 103 and electronic mail storage means 104. Agent mail storage means 104 recognizes an agent mail, and at its notification, scriptizing means 106 converts the mail to a script, and the script is stored in script storage means 107. Script executing means 108 executes the script and an instruction from user input means 101, and it is outputted to output means 109. Then, at a notification of the script executing means 108, electronic mail preparing means 102 prepares an electronic mail, and it is distributed to the electronic mail delivery means 103.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: April 4, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tsuyoshi Ueno, Masato Ishikawa, Hideki Yasukawa
  • Patent number: 6011083
    Abstract: A water-in-oil (W/O) emulsion ink for stencil printing is provided, which is excellent in emulsion stability and drying, high in printing density and low in blurring and seep through. The W/O emulsion ink has an oil phase and a water phase, in which an acid anhydride containing water-soluble polymer is contained together with a water-insoluble colorant in said water phase. The acid anhydride containing water-soluble polymer is preferably an acid anhydride containing olefin copolymer, more specifically, an isobutylene-maleic anhydride copolymer, or an acid anhydride containing vinyl copolymer, more specifically, a styrene-maleic anhydride copolymer. Preferably, the oil phase comprises at least a solvent and an emulsifier, and the water phase comprises a water-in-oil (O/W) emulsion of resin and/or a water-soluble resin.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: January 4, 2000
    Assignee: Riso Kagaku Corporation
    Inventors: Sadanao Okuda, Masato Ishikawa, Takashi Suzuki, Takahiro Wakayama, Yoshihiro Hayashi
  • Patent number: 5910862
    Abstract: Disclosed is a magnetic disk apparatus constructed to reduce a track positional deviation of a magnetic head. This magnetic disk apparatus includes a rotary mechanism for rotating the magnetic disk and a rotary type actuator, provided with the magnetic head at its front end, which magnetic head has a write head and a read head, for moving the magnetic head in such a direction as to traverse tracks of the magnetic disk by making rotations about a rotary shaft. A distance A from the center of rotation of the rotary type actuator to the magnetic head is set equal to or larger than a distance B from the center of rotation of the rotary type actuator to the center of rotation of the magnetic disk. Even when separating a write element and a read element, the track positional deviation of the magnetic head can be reduced.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: June 8, 1999
    Assignee: Fujitsu Limited
    Inventors: Yoshinori Ogawa, Yuji Sasaki, Mitsuaki Yoshida, Kazunori Shikano, Masato Ishikawa
  • Patent number: 5904759
    Abstract: A process for preparing a stencil printing emulsion ink which is a water-in-oil (W/O) emulsion having an oil phase and a water phase and containing a water-insoluble colorant in the water phase, is provided. The process comprises the steps of preparing an aqueous dispersion of said water-insoluble colorant separately from water or an aqueous solution of the remaining water phase components, and adding said aqueous dispersion and water or said aqueous solution separately to said oil phase for emulsification. The process is suitable to produce emulsion inks of various colors, particularly of mixed colors containing two or more colorants in the water phase with a fixed formulation of the oil phase.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: May 18, 1999
    Assignee: Riso Kagaku Corporation
    Inventors: Sadanao Okuda, Masato Ishikawa, Takashi Suzuki, Yoshihiro Hayashi
  • Patent number: 5878327
    Abstract: In an information transmitting system for radio-transmitting information between a fixed station and a mobile station moved within a predetermined moving range, an antenna apparatus is provided on the fixed station side. The antenna apparatus includes a large number of unit antennas, each of which functions as an antenna. These unit antennas are mutually connected to each other, and are arranged along the moving range of the mobile station. The information is transmitted/received in a radio transmission mode between the mobile station and the fixed station via an antenna of the fixed station and the antenna apparatus.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: March 2, 1999
    Assignee: Hitachi Denshi Kabushiki Kaisha
    Inventors: Seiichi Hayashi, Susumu Kasai, Masato Ishikawa
  • Patent number: 5870253
    Abstract: A rotary type actuator for a magnetic disk device includes a magnetic head that traverses tracks of the magnetic disk as the actuator rotates about a rotary shaft. The rotary type actuator has at least one arm for the magnetic head at its front end. A first flat cable has one end connected to the rotary type actuator, for making an electrical connection to the electronics in the disk device. A second flat cable is provided on the side surface of the arm, for electrically connecting the magnetic head to the first flat cable. The first flat cable includes a plurality of lands arranged along an extended direction of the arm. The second flat cable includes a first land group provided at one end of the second flat cable for electrically connecting to the magnetic head. The first land group has a plurality of lands arranged along an extended direction of the arm. A second land group is provided at the other end of the second flat cable for electrically connecting to the first flat cable.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: February 9, 1999
    Assignee: Fujitsu Limited
    Inventors: Yoshinori Ogawa, Yuji Sasaki, Mitsuaki Yoshida, Kazunori Shikano, Masato Ishikawa
  • Patent number: 5848407
    Abstract: A hypertext document and anchor sentences of parent documents for the hypertext document are registered with an hypertext document identifier as document information for each of hypertext documents having reference relationships with each other. A user can refer to one hypertext document according to an anchor sentence of another hypertext document functioning as a parent document. Also, occurrence positions of one word in hypertext documents and parent documents are registered as word information for each of words.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: December 8, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masato Ishikawa, Mitsuhiro Sato, Masaki Hoshida, Yoshihiro Noguchi, Hideki Yasukawa
  • Patent number: 5776232
    Abstract: A water-in-oil (W/O) emulsion ink for stencil printing is provided, which contains a water-insoluble colorant in the water phase, has the water phase dispersed finely and stably in the oil phase, and can provide prints high in printing density and glossiness. The water-insoluble colorant has an average particle size of 1 .mu.m or less, and is constituted by particles of 1 .mu.m or less in particle size in an amount of 50% or more on area basis of the total of the water-insoluble colorant. The emulsion ink is preferably formed by use of an emulsifier having an HLB of 1.5-6.0, and preferably contains a tertiary amine compound in the water phase as a dispersant for the water-insoluble colorant.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: July 7, 1998
    Assignee: Riso Kagaku Corporation
    Inventors: Sadanao Okuda, Masato Ishikawa, Takashi Suzuki, Yoshihiro Hayashi
  • Patent number: 5759245
    Abstract: An water-in-oil (W/O) emulsion ink for stencil printing is provided, which is excellent in emulsion stability. The water-in-oil (W/O) emulsion ink has an oil phase and a water phase, in which a water-insoluble colorant is contained in said water phase, and said water-insoluble colorant comprises an insoluble azo pigment. The insoluble azo pigment contained in the water phase preferably has an average particle size of 1 .mu.m or less. The emulsion ink is preferably formed by use of an emulsifier having an HLB of 1.5-6.0, and the water phase preferably has a maximum particle diameter of 10 .mu.m or less.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: June 2, 1998
    Assignee: Riso Kagaku Corporation
    Inventors: Sadanao Okuda, Masato Ishikawa, Takashi Suzuki, Yoshihiro Hayashi
  • Patent number: 5718748
    Abstract: An water-in-oil (W/O) emulsion ink for stencil printing is provided, which is excellent in emulsion stability and drying, high in printing density and low in blurring and seep through. The W/O emulsion ink has an oil phase and a water phase, in which a water-insoluble colorant is contained in said water phase, and said oil phase comprises a solvent and an agent for thickening said solvent. The oil phase preferably has a viscosity at 23.degree. C. of 5-20,000 cps, more preferably 15-2,000 cps. The thickening agent may be a resin in an amount of 1-30%, preferably 2-25% by weight of the total of the ink, or may be oil-insoluble particulates or powders in an amount of 0.01-10%, preferably 0.1-5% by weight of the total of the ink.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: February 17, 1998
    Assignee: Riso Kagaku Corporation
    Inventors: Takashi Suzuki, Masato Ishikawa, Yoshihiro Hayashi, Sadanao Okuda
  • Patent number: 4943607
    Abstract: The invention relates to fiber-reinforced unsaturated polyester resin compositions comprising an unsaturated polyester (A) obtained from a dicarboxylic acid containing unsaturated dicarboxylic acid or its anhydride, or an anhydride of the dicarboxylic acid and a polyhydric alcohol, a polyisocyanate (B), a polymerizable vinyl monomer (C), and a fiber (D), which produce molded articles having excellent impact resistance and improved moldability.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: July 24, 1990
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Hiroka Tanisake, Hiroyuki Okumura, Akira Namikawa, Masato Ishikawa, Toshiaki Abe