Patents by Inventor Takehis Minowa

Takehis Minowa 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).

  • Nd-Fe-B rare earth permanent magnet material
    Publication number: 20060137767
    Abstract: A rare earth permanent magnet material is based on an R—Fe—Co—B—Al—Cu system wherein R is at least one element selected from Nd, Pr, Dy, Tb, and Ho, 15 to 33% by weight of Nd being contained. At least two compounds selected from M-B, M-B—Cu and M-C compounds (wherein M is Ti, Zr or Hf) and an R oxide have precipitated within the alloy structure as grains having an average grain size of up to 5 ?m which are uniformly distributed in the alloy structure at intervals of up to 50 ?m.
    Type: Application
    Filed: December 23, 2005
    Publication date: June 29, 2006
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Kenji Yamamoto, Koichi Hirota, Takehis Minowa