Patents by Inventor Tohru KOJIMA

Tohru KOJIMA 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).

  • Heat treatment apparatus for laminated body of amorphous alloy ribbon and soft magnetic core
    Patent number: 10636567
    Abstract: A heat treatment apparatus for a laminated body of amorphous alloy ribbon includes: a lamination jig that holds the laminated body of amorphous alloy ribbon; two heating plates that sandwich the laminated body from upper and lower surfaces in a lamination direction without coming into contact with the lamination jig; and a heating control apparatus that controls a heating temperature of the two heating plates.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: April 28, 2020
    Assignees: TOHOKU MAGNET INSTITUTE CO., LTD., PANASONIC CORPORATION
    Inventors: Akihiro Makino, Nobuyuki Nishiyama, Terutsugu Segawa, Tohru Kojima, Yukio Nishikawa
  • Iron core and motor
    Patent number: 10566857
    Abstract: To provide an iron core and a motor for preventing reduction in motor drive efficiency. An iron core includes laminate section made up of a lamination of plural soft magnetic ribbons, fixed to metal substrate, and provided with winding, and fastening part that pressurizes laminate section in a lamination direction of soft magnetic ribbons. Also, the fastening part is disposed around an opening of through-hole that penetrates laminate section. Furthermore, a metal plate shaped so as not to cover winding section is provided between laminate section and fastening part. Besides, the motor includes a rotor and the iron core.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: February 18, 2020
    Assignee: Panasonic Corporation
    Inventors: Yukio Nishikawa, Taihei Okada, Tohru Kojima
  • Magnetic-plate laminated body and motor
    Patent number: 10461589
    Abstract: A magnetic-plate laminated body includes: a laminated part made up of a plurality of laminated soft magnetic ribbons; first and second metal plates that sandwich the laminated part from upper and lower surfaces in a lamination direction of the laminated part; and a fastening mechanism that penetrates the first and second metal plates and the laminated part and fastening the laminated part by the first and second metal plates.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: October 29, 2019
    Assignees: TOHOKU MAGNET INSTITUTE CO., LTD., PANASONIC CORPORATION
    Inventors: Akihiro Makino, Nobuyuki Nishiyama, Yukio Nishikawa, Tohru Kojima, Takeshi Ogawa
  • IRON CORE AND MOTOR
    Publication number: 20180159389
    Abstract: To provide an iron core and a motor for preventing reduction in motor drive efficiency. An iron core includes laminate section made up of a lamination of plural soft magnetic ribbons, fixed to metal substrate, and provided with winding, and fastening part that pressurizes laminate section in a lamination direction of soft magnetic ribbons. Also, the fastening part is disposed around an opening of through-hole that penetrates laminate section. Furthermore, a metal plate shaped so as not to cover winding section is provided between laminate section and fastening part. Besides, the motor includes a rotor and the iron core.
    Type: Application
    Filed: December 6, 2017
    Publication date: June 7, 2018
    Inventors: Yukio Nishikawa, Taihei Okada, Tohru Kojima
  • HEAT TREATMENT APPARATUS FOR LAMINATED BODY OF AMORPHOUS ALLOY RIBBON AND SOFT MAGNETIC CORE
    Publication number: 20170229237
    Abstract: A heat treatment apparatus for a laminated body of amorphous alloy ribbon includes: a lamination jig that holds the laminated body of amorphous alloy ribbon; two heating plates that sandwich the laminated body from upper and lower surfaces in a lamination direction without coming into contact with the lamination jig; and a heating control apparatus that controls a heating temperature of the two heating plates.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 10, 2017
    Inventors: Akihiro MAKINO, Nobuyuki NISHIYAMA, Terutsugu SEGAWA, Tohru KOJIMA, Yukio NISHIKAWA
  • MAGNETIC-PLATE LAMINATED BODY AND MOTOR
    Publication number: 20170229930
    Abstract: A magnetic-plate laminated body includes: a laminated part made up of a plurality of laminated soft magnetic ribbons; first and second metal plates that sandwich the laminated part from upper and lower surfaces in a lamination direction of the laminated part; and a fastening mechanism that penetrates the first and second metal plates and the laminated part and fastening the laminated part by the first and second metal plates.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 10, 2017
    Inventors: Akihiro MAKINO, Nobuyuki NISHIYAMA, Yukio NISHIKAWA, Tohru KOJIMA, Takeshi OGAWA