US Patent 8012269 Nd-Fe-B rare earth permanent magnet material
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Patent 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 μm which are uniformly distributed in the alloy structure at intervals of up to 50 μm.
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Patent Inventor Names
Kenji Yamamoto0
Koichi Hirota0
Takehisa Minowa0
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US Patent 08012269 Nd-Fe-B rare earth permanent magnet material US Patent 8012269 Nd-Fe-B rare earth permanent magnet material
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Patent Number
080122690
Patent Number
80122690
Edits on 5 Apr, 2023
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Infobox
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Patent Jurisdiction
Patent Number
080122690
Date of Patent
September 6, 2011
0Patent Application Number
113150990
Date Filed
December 23, 2005
0Patent Primary Examiner
Edits on 13 Dec, 2021
Golden AI
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US Patent 08012269 Nd-Fe-B rare earth permanent magnet material
Infobox
Is a
Patent jurisdiction
Patent number
08012269
Date of patent
September 6, 2011
Patent application number
11315099
Date Filed
December 23, 2005
Patent primary examiner
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