The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 2021
Filed:
Jun. 17, 2016
Hitachi Metals, Ltd., Tokyo, JP;
Teppei Satoh, Mishima-gun, JP;
Futoshi Kuniyoshi, Mishima-gun, JP;
Rintaro Ishii, Mishima-gun, JP;
Takeshi Nishiuchi, Mishima-gun, JP;
Noriyuki Nozawa, Mishima-gun, JP;
HITACHI METALS, LTD., Tokyo, JP;
Abstract
To provide an R-T-B based sintered magnet including R: 27.5 to 34.0% by mass, RH: 2 to 10% by mass, B: 0.89 to 0.95% by mass, Ti: 0.1 to 0.2% by mass, Ga: 0.3 to 0.7% by mass, Cu: 0.07 to 0.50% by mass, Al: 0.05 to 0.50% by mass, M (M is Nb and/or Zr): 0 to 0.3% by mass, balance T, and inevitable impurities, the following inequality expressions (1), (2), and (3) being satisfied:[T]−72.3([B]−0.45[Ti])>0  (1)([T]−72.3([B]−0.45[Ti]))/55.85<13[Ga]/69.72  (2)[Ga]≥[Cu]  (3).