Patents by Inventor Takeo Ishikawa

Takeo 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).

  • PERMANENT MAGNET-EMBEDDED MOTOR AND PUMP DEVICE
    Publication number: 20220247268
    Abstract: A permanent magnet-embedded motor and a pump device are provided. The permanent magnet-embedded motor includes: a stator, including an annular stator core having teeth and slots disposed in a circumferential direction and coils wound around the teeth; and a rotor, including a rotor core having insertion fitting holes disposed to face the teeth of the stator and disposed in the circumferential direction and permanent magnets inserted and fitted into the insertion fitting holes. The rotor core includes: a groove-shaped recessed part, provided between the insertion fitting holes in the circumferential direction to define an outer circumferential magnetic pole part; a pair of notch parts, provided from both ends toward a center side of the outer circumferential magnetic pole part in the circumferential direction to be recessed inward with respect to an outer circumferential contour; and an outer circumferential magnetic pole surface, sandwiched between the pair of notch parts.
    Type: Application
    Filed: December 1, 2021
    Publication date: August 4, 2022
    Applicants: MIKUNI CORPORATION, National University Corporation Gunma University
    Inventors: Shin SUZUKI, Takeo ISHIKAWA, Kota TAKATA
  • SHRINK-PROOF TREATMENT OF CELLULOSIC FIBER TEXTILE
    Publication number: 20020020509
    Abstract: A method for the shrink-proof treatment of a cellulosic fiber textile comprising the steps of treating a cellulosic fiber textile with liquid ammonia and subsequently treating it with steam.
    Type: Application
    Filed: October 30, 1998
    Publication date: February 21, 2002
    Inventors: YUICHI YANAI, KENJI UNO, TAKEO ISHIKAWA, TADASHI ISOGAI
  • Shrink-proof treatment of cellulosic fiber textile
    Patent number: 6203577
    Abstract: A method for shrink-proofing a cellulosic fiber textile that involves liquid ammonia treatment, hot water or alkali treatment under tension or under no tension, and with optional resin treatment.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: March 20, 2001
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Yuichi Yanai, Takayuki Hirai, Masayoshi Oba, Kiyoshi Ikeda, Yasushi Takagi, Takeo Ishikawa, Kazuhiko Harada, Hirotaka Iida, Ryuichi Ito, Osamu Hasegawa
  • Wood molding process
    Patent number: 6053225
    Abstract: A wood molding process which comprises treating woods with liquid ammonia, removing said liquid ammonia by evaporation, softening woods with heating and molding them into a desired shape, and treating the molded woods with hot water or steam.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: April 25, 2000
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Yuichi Yanai, Takeo Ishikawa, Kazuhiko Arakawa
  • Method for forming durable creases in cellulosic fiber textile
    Patent number: 5910279
    Abstract: Creases are formed in a cellulosic fiber textile by treating the fiber textile with liquid ammonia, creasing the fiber textile, and treating the fiber textile with hot water or alkaline solution substantially simultaneous with or subsequent to the creasing step. Fully durable creases are formed in the cellulosic fiber textile without detracting from strength.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: June 8, 1999
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Yuichi Yanai, Takayuki Hirai, Masayoshi Oba, Kiyoshi Ikeda, Yasushi Takagi, Takeo Ishikawa, Kazuhiko Harada, Hirotaka Iida, Kazuhiko Arakawa, Masazumi Ii, Yuzo Nakamura