Patents by Inventor Hidekazu TOMONO

Hidekazu TOMONO 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).

  • Rare earth permanent magnet and rare earth permanent magnet manufacturing method
    Patent number: 11264154
    Abstract: A rare earth permanent magnet includes a main phase containing: a rare earth element R of one or more types including Nd; an element L of one or more types selected from a group consisting of Co, Be, Li, Al, and Si; B; and Fe, wherein crystals which form the main phase belong to P42/mnm; some of B atoms occupying a 4f site of the crystals are substituted with atoms of the element L; each distribution of Nd atoms and the atoms of the element L appears along a C-axis direction of the crystals in a plurality of cycles; and the rare earth permanent magnet includes an area where a cycle of the atoms of the element L matches a cycle of the Nd atoms.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: March 1, 2022
    Assignee: IHI Corporation
    Inventors: Natsuki Yoneyama, Haruki Eguchi, Hidekazu Tomono, Isao Nakanowatari, Keisuke Nagao
  • Rare earth permanent magnet and rare earth permanent magnet manufacturing method
    Patent number: 10629343
    Abstract: A magnetic property of a rare earth permanent magnet containing neodymium, iron, and boron is enhanced. The present disclosure is a rare earth permanent magnet with a compound represented by a following expression as a main phase: Nd2Fe14B(1-x)Mx. In the expression, M represents an element selected from any one of cobalt, beryllium, lithium, aluminum, and silicon and x satisfies 0.01?x?0.25. The main phase has an Nd—Fe—B layer and an Fe layer periodically and part of boron is substituted with any one or more types of elements selected from a group consisting of cobalt, beryllium, lithium, aluminum, and silicon.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: April 21, 2020
    Assignee: IHI CORPORATION
    Inventors: Haruki Eguchi, Isao Nakanowatari, Natsuki Yoneyama, Hidekazu Tomono, Hiroo Takahashi
  • RARE EARTH PERMANENT MAGNET AND PRODUCTION METHOD OF RARE EARTH PERMANENT MAGNET
    Publication number: 20180047488
    Abstract: A rare earth permanent magnet comprising a main phase containing: one or more elements R selected from a group consisting of Nd and Pr; one or more elements L selected from a group consisting of Co, Be, Li, Al and Si; one or more elements A selected from a group consisting of Tb, Sm, Gd, Ho and Er; Fe; and B, wherein crystals forming the main phase belong to P42/mnm, and some B atoms occupying a 4f site are substituted by atoms of the elements L.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 15, 2018
    Applicant: IHI CORPORATION
    Inventors: Hidekazu TOMONO, Haruki EGUCHI, Natsuki YONEYAMA, Isao NAKANOWATARI, Keisuke NAGAO, Hiroo TAKAHASHI
  • RARE EARTH PERMANENT MAGNET AND RARE EARTH PERMANENT MAGNET MANUFACTURING METHOD
    Publication number: 20160322135
    Abstract: A magnetic property of a rare earth permanent magnet containing neodymium, iron, and boron is enhanced. The present disclosure is a rare earth permanent magnet with a compound represented by a following expression as a main phase: Nd2Fe14B(1-x) Mx In the expression, M represents an element selected from any one of cobalt, beryllium, lithium, aluminum, and silicon and x satisfies 0.01?x?0.25. The main phase has an Nd—Fe—B layer and an Fe layer periodically and part of boron is substituted with any one or more types of elements selected from a group consisting of cobalt, beryllium, lithium, aluminum, and silicon.
    Type: Application
    Filed: May 5, 2016
    Publication date: November 3, 2016
    Applicant: IHI CORPORATION
    Inventors: Haruki EGUCHI, Isao NAKANOWATARI, Natsuki YONEYAMA, Hidekazu TOMONO, Hiroo TAKAHASHI