CN1537313A - 稀土类烧结磁体及其制造方法 - Google Patents
稀土类烧结磁体及其制造方法 Download PDFInfo
- Publication number
- CN1537313A CN1537313A CNA038007401A CN03800740A CN1537313A CN 1537313 A CN1537313 A CN 1537313A CN A038007401 A CNA038007401 A CN A038007401A CN 03800740 A CN03800740 A CN 03800740A CN 1537313 A CN1537313 A CN 1537313A
- Authority
- CN
- China
- Prior art keywords
- atom
- alloy
- content
- rare
- sintered magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 69
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims description 52
- 229910052799 carbon Chemical group 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052796 boron Inorganic materials 0.000 claims abstract description 18
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 8
- 150000003624 transition metals Chemical class 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 146
- 239000000956 alloy Substances 0.000 claims description 146
- 239000012071 phase Substances 0.000 claims description 113
- 239000013078 crystal Substances 0.000 claims description 94
- 150000001875 compounds Chemical class 0.000 claims description 36
- 239000007791 liquid phase Substances 0.000 claims description 34
- 239000000843 powder Substances 0.000 claims description 32
- 238000005245 sintering Methods 0.000 claims description 26
- 229910052804 chromium Inorganic materials 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910017061 Fe Co Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- -1 tetragonal compound Chemical class 0.000 abstract description 5
- 125000004429 atom Chemical group 0.000 description 83
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 47
- 230000007797 corrosion Effects 0.000 description 34
- 238000005260 corrosion Methods 0.000 description 34
- 239000001257 hydrogen Substances 0.000 description 24
- 229910052739 hydrogen Inorganic materials 0.000 description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 20
- RZJQYRCNDBMIAG-UHFFFAOYSA-N [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] Chemical class [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] RZJQYRCNDBMIAG-UHFFFAOYSA-N 0.000 description 16
- 238000005266 casting Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000005291 magnetic effect Effects 0.000 description 11
- 238000010298 pulverizing process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000003595 mist Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 230000010287 polarization Effects 0.000 description 10
- 238000010791 quenching Methods 0.000 description 10
- 239000000314 lubricant Substances 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 230000036647 reaction Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000004907 flux Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 229910000765 intermetallic Inorganic materials 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- NUKZAGXMHTUAFE-UHFFFAOYSA-N methyl hexanoate Chemical compound CCCCCC(=O)OC NUKZAGXMHTUAFE-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 229910002066 substitutional alloy Inorganic materials 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 229910000979 O alloy Inorganic materials 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical class [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000003411 electrode reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- YRHYCMZPEVDGFQ-UHFFFAOYSA-N methyl decanoate Chemical compound CCCCCCCCCC(=O)OC YRHYCMZPEVDGFQ-UHFFFAOYSA-N 0.000 description 2
- UQDUPQYQJKYHQI-UHFFFAOYSA-N methyl laurate Chemical compound CCCCCCCCCCCC(=O)OC UQDUPQYQJKYHQI-UHFFFAOYSA-N 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 238000009702 powder compression Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910000905 alloy phase Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0273—Imparting anisotropy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002173330 | 2002-06-13 | ||
JP173330/2002 | 2002-06-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1537313A true CN1537313A (zh) | 2004-10-13 |
CN1320564C CN1320564C (zh) | 2007-06-06 |
Family
ID=29727912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB038007401A Expired - Lifetime CN1320564C (zh) | 2002-06-13 | 2003-06-06 | 稀土类烧结磁体及其制造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050217758A1 (zh) |
EP (1) | EP1494250B1 (zh) |
CN (1) | CN1320564C (zh) |
AU (1) | AU2003241971A1 (zh) |
WO (1) | WO2003107362A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102959653A (zh) * | 2010-06-30 | 2013-03-06 | 日立金属株式会社 | 经表面改性的稀土类烧结磁铁的制造方法 |
CN107134335A (zh) * | 2016-02-26 | 2017-09-05 | Tdk株式会社 | R‑t‑b系永久磁铁 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1316375C (en) | 1982-08-21 | 1993-04-20 | Masato Sagawa | Magnetic materials and permanent magnets |
US4792368A (en) | 1982-08-21 | 1988-12-20 | Sumitomo Special Metals Co., Ltd. | Magnetic materials and permanent magnets |
JP2720039B2 (ja) | 1988-02-26 | 1998-02-25 | 住友特殊金属株式会社 | 耐食性のすぐれた希土類磁石材料 |
JP2987705B2 (ja) * | 1988-11-01 | 1999-12-06 | 株式会社トーキン | 耐酸化性に優れた希土類永久磁石 |
JP2794496B2 (ja) * | 1991-02-22 | 1998-09-03 | 同和鉱業株式会社 | 不可逆減磁の小さい熱安定性に優れたR−Fe−Co−B−C系永久磁石合金 |
DE69434323T2 (de) * | 1993-11-02 | 2006-03-09 | Tdk Corp. | Preparation d'un aimant permanent |
JP3724513B2 (ja) * | 1993-11-02 | 2005-12-07 | Tdk株式会社 | 永久磁石の製造方法 |
JP3405806B2 (ja) * | 1994-04-05 | 2003-05-12 | ティーディーケイ株式会社 | 磁石およびその製造方法 |
JPH0920953A (ja) * | 1995-06-30 | 1997-01-21 | Sumitomo Special Metals Co Ltd | 耐食性のすぐれたR−Fe−B−C系永久磁石材料の製造方法 |
JP2000286118A (ja) * | 1999-03-31 | 2000-10-13 | Tdk Corp | 焼結磁石の製造方法 |
KR100771676B1 (ko) * | 2000-10-04 | 2007-10-31 | 가부시키가이샤 네오맥스 | 희토류 소결자석 및 그 제조방법 |
JP4023138B2 (ja) * | 2001-02-07 | 2007-12-19 | 日立金属株式会社 | 鉄基希土類合金粉末および鉄基希土類合金粉末を含むコンパウンドならびにそれを用いた永久磁石 |
AU2002241342A1 (en) * | 2001-03-30 | 2002-10-15 | Sumitomo Special Metals Co., Ltd. | Rare earth alloy sintered compact and method of making the same |
-
2003
- 2003-06-06 WO PCT/JP2003/007231 patent/WO2003107362A1/ja active Application Filing
- 2003-06-06 CN CNB038007401A patent/CN1320564C/zh not_active Expired - Lifetime
- 2003-06-06 US US10/507,116 patent/US20050217758A1/en not_active Abandoned
- 2003-06-06 EP EP03730855.8A patent/EP1494250B1/en not_active Expired - Lifetime
- 2003-06-06 AU AU2003241971A patent/AU2003241971A1/en not_active Abandoned
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102959653A (zh) * | 2010-06-30 | 2013-03-06 | 日立金属株式会社 | 经表面改性的稀土类烧结磁铁的制造方法 |
CN102959653B (zh) * | 2010-06-30 | 2016-02-10 | 日立金属株式会社 | 经表面改性的稀土类烧结磁铁的制造方法 |
US9558885B2 (en) | 2010-06-30 | 2017-01-31 | Hitachi Metals, Ltd. | Method for producing surface-modified rare earth metal-based sintered magnet |
CN107134335A (zh) * | 2016-02-26 | 2017-09-05 | Tdk株式会社 | R‑t‑b系永久磁铁 |
Also Published As
Publication number | Publication date |
---|---|
CN1320564C (zh) | 2007-06-06 |
AU2003241971A1 (en) | 2003-12-31 |
US20050217758A1 (en) | 2005-10-06 |
EP1494250A4 (en) | 2008-08-20 |
EP1494250B1 (en) | 2014-12-31 |
EP1494250A1 (en) | 2005-01-05 |
WO2003107362A1 (ja) | 2003-12-24 |
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Owner name: HITACHI METALS, LTD. Free format text: FORMER OWNER: SUMITOMO SPEC METALS Effective date: 20130520 |
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Effective date of registration: 20130520 Address after: Tokyo, Japan Patentee after: HITACHI METALS, Ltd. Address before: Osaka Japan Patentee before: Neomax Co.,Ltd. |
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EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041013 Assignee: BEIJING JINGCI MAGNET Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2013990000374 Denomination of invention: Rare earth sintered magnet and its mfg. method Granted publication date: 20070606 License type: Common License Record date: 20130703 Application publication date: 20041013 Assignee: BEIJING ZHONG KE SAN HUAN HI-TECH Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2013990000364 Denomination of invention: Rare earth sintered magnet and its mfg. method Granted publication date: 20070606 License type: Common License Record date: 20130701 Application publication date: 20041013 Assignee: ADVANCED TECHNOLOGY & MATERIALS Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2013990000365 Denomination of invention: Rare earth sintered magnet and its mfg. method Granted publication date: 20070606 License type: Common License Record date: 20130701 |
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LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041013 Assignee: NINGBO YUNSHENG Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2014990000031 Denomination of invention: Rare earth sintered magnet and its mfg. method Granted publication date: 20070606 License type: Common License Record date: 20140114 |
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LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
C56 | Change in the name or address of the patentee | ||
CP02 | Change in the address of a patent holder |
Address after: Japan Tokyo port harbor 2 chome No. 70 Patentee after: HITACHI METALS, Ltd. Address before: Tokyo, Japan Patentee before: HITACHI METALS, Ltd. |
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EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041013 Assignee: Hitachi metal ring Ci material (Nantong) Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2017990000034 Denomination of invention: Rare earth sintered magnet and its mfg. method Granted publication date: 20070606 License type: Common License Record date: 20170209 |
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LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
CI03 | Correction of invention patent | ||
CI03 | Correction of invention patent |
Correction item: A transferee of the entry into force of the contract Correct: Hitachi metal ring magnets (Nantong) Co.,Ltd. False: Hitachi metal ring Ci material (Nantong) Co.,Ltd. Number: 11 Volume: 33 |
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CX01 | Expiry of patent term |
Granted publication date: 20070606 |
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CX01 | Expiry of patent term |