Patents by Inventor Fumio Sawa

Fumio Sawa 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: 10770945
    Abstract: According to one embodiment, there is provided a rotating electrical machine coil with a conductor and an insulation layer that is provided around the conductor to cover the conductor, the rotating electrical machine coil including a linear part of the coil and a coil end that is separable from and electrically connectable to the linear part of the coil.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: September 8, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Hidehito Matsuzaki, Tetsushi Okamoto, Fumio Sawa, Miki Nakamura, Atsushi Yamamoto, Yo Sasaki, Masafumi Fujita, Yoshihiro Taniyama, Takashi Harakawa, Norio Takahashi, Takaaki Hirose, Hiroaki Ishizuka
  • Patent number: 10082035
    Abstract: An erosion resistant material has a continuous portion and discontinuous portions. The continuous portion has a continuous structure. The discontinuous portions are arranged inside the continuous portion to have a discontinuous structure. The discontinuous portions are formed of particles having an average particle diameter of 1 ?m or less. Further, the discontinuous portions are formed of a material having a surface hardness and a Young's modulus higher than those of the continuous portion.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: September 25, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tetsushi Okamoto, Fumio Sawa, Takashi Harakawa, Kenichi Yamazaki, Hiroaki Cho, Naoki Shibukawa, Tadayuki Hashidate, Yoshihiro Hyodo, Akira Tanaka, Masamitsu Sakuma
  • Publication number: 20180198345
    Abstract: According to one embodiment, there is provided a rotating electrical machine coil with a conductor and an insulation layer that is provided around the conductor to cover the conductor, the rotating electrical machine coil including a linear part of the coil and a coil end that is separable from and electrically connectable to the linear part of the coil.
    Type: Application
    Filed: January 5, 2018
    Publication date: July 12, 2018
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Hidehito Matsuzaki, Tetsushi Okamoto, Fumio Sawa, Miki Nakamura, Atsushi Yamamoto, Yo Sasaki, Masafumi Fujita, Yoshihiro Taniyama, Takashi Harakawa, Norio Takahashi, Takaaki Hirose, Hiroaki Ishizuka
  • Publication number: 20160169009
    Abstract: An erosion resistant material has a continuous portion and discontinuous portions. The continuous portion has a continuous structure. The discontinuous portions are arranged inside the continuous portion to have a discontinuous structure. The discontinuous portions are formed of particles having an average particle diameter of 1 ?m or less. Further, the discontinuous portions are formed of a material having a surface hardness and a Young's modulus higher than those of the continuous portion.
    Type: Application
    Filed: February 24, 2016
    Publication date: June 16, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tetsushi OKAMOTO, Fumio SAWA, Takashi HARAKAWA, Kenichi YAMAZAKI, Hiroaki CHO, Naoki SHIBUKAWA, Tadayuki HASHIDATE, Yoshihiro HYODO, Akira TANAKA, Masamitsu SAKUMA
  • Publication number: 20090197102
    Abstract: The present invention provides a solution to the above-described drawbacks, and more specifically, as the tape-like or sheet-like insulation member, the resin matrix in which the first particles having a heat conductivity of 1 W/mK or higher and 300 W/mK or lower, that are diffused in the resin matrix, and the second particles having a heat conductivity of 0.5 W/mK or higher and 300 W/mK or lower, are diffused, is employed.
    Type: Application
    Filed: March 31, 2009
    Publication date: August 6, 2009
    Inventors: Tetsushi Okamoto, Hiroyoshi Tsuchiya, Fumio Sawa, Noriyuki Iwata, Mitsuhiko Koyama, Yukio Suzuki, Akihiko Suzuki, Tooru Ootaka, Shigehito Ishii, Susumu Nagano
  • Patent number: 7524557
    Abstract: The present invention provides a solution to the above-described drawbacks, and more specifically, as the tape-like or sheet-like insulation member, the resin matrix in which the first particles having a heat conductivity of 1 W/mK or higher and 300 W/mK or lower, that are diffused in the resin matrix, and the second particles having a heat conductivity of 0.5 W/mK or higher and 300 W/mK or lower, are diffused, is employed.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: April 28, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsushi Okamoto, Hiroyoshi Tsuchiya, Fumio Sawa, Noriyuki Iwata, Mitsuhiko Koyama, Yukio Suzuki, Akihiko Suzuki, Tooru Ootaka, Shigehito Ishii, Susumu Nagano
  • Patent number: 7498517
    Abstract: A mica tape comprising a mica foil, a glass cloth, and an inorganic filler arranged on the glass cloth, wherein the mica tape is wound a plurality of times about an outer circumferential surface of a conductor portion of an electrical rotating machine coil so as to form an insulating layer for the coil, and the inorganic filler has a Mohs hardness falling within a range of 1 to 7 and exhibits a heat conductivity superior to those of the mica foil and the glass cloth, whereby, the inorganic filler is excellent in the heat conductivity and has a Mohs hardness not lower than that of the glass cloth contained in the mica tape, when used together with the inorganic filler.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: March 3, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fumio Sawa, Noriyuki Iwata, Hiroshi Hatano, Tetsushi Okamoto, Kazuma Mukai, Toshiyuki Aso, Makoto Kawahara, Mikio Kakiuchi
  • Patent number: 7425366
    Abstract: The invention aims to provide a highly heat conductive tape member or sheet member and a method for easily producing a highly heat conductive tape member or sheet member. The mica tape member or mica sheet member of the invention includes a mica-containing layer and a lining material, and the mica-containing layer contains scaly particles, particles having a heat conductivity of 0.5 W/mK or higher and a size of 1 ?m or smaller, and a binder.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: September 16, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsushi Okamoto, Fumio Sawa, Noriyuki Iwata, Mikio Kakiuchi, Toshimitsu Yamada
  • Publication number: 20070222307
    Abstract: A mica tape comprising a mica foil, a glass cloth, and an inorganic filler arranged on the glass cloth, wherein the mica tape is wound a plurality of times about an outer circumferential surface of a conductor portion of an electrical rotating machine coil so as to form an insulating layer for the coil, and the inorganic filler has a Mohs hardness falling within a range of 1 to 7 and exhibits a heat conductivity superior to those of the mica foil and the glass cloth, whereby, the inorganic filler is excellent in the heat conductivity and has a Mohs hardness not lower than that of the glass cloth contained in the mica tape, when used together with the inorganic filler.
    Type: Application
    Filed: May 24, 2007
    Publication date: September 27, 2007
    Inventors: Fumio Sawa, Noriyuki Iwata, Hiroshi Hatano, Tetsushi Okamoto, Kazuma Mukai, Toshiyuki Aso, Makoto Kawahara, Mikio Kakiuchi
  • Publication number: 20060258791
    Abstract: The invention aims to provide a highly heat conductive tape member or sheet member and a method for easily producing a highly heat conductive tape member or sheet member. The mica tape member or mica sheet member of the invention includes a mica-containing layer and a lining material, and the mica-containing layer contains scaly particles, particles having a heat conductivity of 0.5 W/mK or higher and a size of 1 ?m or smaller, and a binder.
    Type: Application
    Filed: July 14, 2006
    Publication date: November 16, 2006
    Inventors: Tetsushi Okamoto, Fumio Sawa, Noriyuki Iwata, Mikio Kakiuchi, Toshimitsu Yamada
  • Publication number: 20050208301
    Abstract: The present invention provides a solution to the above-described drawbacks, and more specifically, as the tape-like or sheet-like insulation member, the resin matrix in which the first particles having a heat conductivity of 1 W/mK or higher and 300 W/mK or lower, that are diffused in the resin matrix, and the second particles having a heat conductivity of 0.5 W/mK or higher and 300 W/mK or lower, are diffused, is employed.
    Type: Application
    Filed: January 4, 2005
    Publication date: September 22, 2005
    Inventors: Tetsushi Okamoto, Hiroyoshi Tsuchiya, Fumio Sawa, Noriyuki Iwata, Mitsuhiko Koyama, Yukio Suzuki, Akihiko Suzuki, Tooru Ootaka, Shigehito Ishii, Susumu Nagano