CN111210987B - 一种r-t-b磁体材料及其制备方法和应用 - Google Patents
一种r-t-b磁体材料及其制备方法和应用 Download PDFInfo
- Publication number
- CN111210987B CN111210987B CN202010077816.XA CN202010077816A CN111210987B CN 111210987 B CN111210987 B CN 111210987B CN 202010077816 A CN202010077816 A CN 202010077816A CN 111210987 B CN111210987 B CN 111210987B
- Authority
- CN
- China
- Prior art keywords
- magnet material
- hydrogen
- raw material
- treatment
- temperature
- 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.)
- Active
Links
- 239000000463 material Substances 0.000 title claims abstract description 130
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000001257 hydrogen Substances 0.000 claims abstract description 105
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 105
- 238000005324 grain boundary diffusion Methods 0.000 claims abstract description 42
- 230000004913 activation Effects 0.000 claims abstract description 37
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 36
- 238000003723 Smelting Methods 0.000 claims abstract description 30
- 239000011261 inert gas Substances 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 239000012298 atmosphere Substances 0.000 claims abstract description 10
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 7
- 230000003213 activating effect Effects 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims description 66
- 239000000203 mixture Substances 0.000 claims description 64
- 238000000034 method Methods 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 22
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 18
- 238000005266 casting Methods 0.000 claims description 15
- 238000005245 sintering Methods 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 238000005496 tempering Methods 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000007751 thermal spraying Methods 0.000 claims description 9
- 150000002910 rare earth metals Chemical class 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 6
- 238000009713 electroplating Methods 0.000 claims description 6
- 229910052733 gallium Inorganic materials 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000009694 cold isostatic pressing Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000005246 galvanizing Methods 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052743 krypton Inorganic materials 0.000 claims description 3
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229910052754 neon Inorganic materials 0.000 claims description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229910052704 radon Inorganic materials 0.000 claims description 3
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 claims description 3
- -1 rare earth fluoride Chemical class 0.000 claims description 3
- 229910052724 xenon Inorganic materials 0.000 claims description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 238000013467 fragmentation Methods 0.000 claims description 2
- 238000006062 fragmentation reaction Methods 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 238000007740 vapor deposition Methods 0.000 claims description 2
- 230000005347 demagnetization Effects 0.000 abstract description 9
- 229910017052 cobalt Inorganic materials 0.000 abstract description 3
- 239000010941 cobalt Substances 0.000 abstract description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000696 magnetic material Substances 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 238000003825 pressing Methods 0.000 description 12
- 229910052779 Neodymium Inorganic materials 0.000 description 7
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910052771 Terbium Inorganic materials 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- CSDQQAQKBAQLLE-UHFFFAOYSA-N 4-(4-chlorophenyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine Chemical compound C1=CC(Cl)=CC=C1C1C(C=CS2)=C2CCN1 CSDQQAQKBAQLLE-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000010902 jet-milling Methods 0.000 description 4
- 229910052692 Dysprosium Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- LKNRQYTYDPPUOX-UHFFFAOYSA-K trifluoroterbium Chemical compound F[Tb](F)F LKNRQYTYDPPUOX-UHFFFAOYSA-K 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910052689 Holmium Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910003451 terbium oxide Inorganic materials 0.000 description 2
- SCRZPWWVSXWCMC-UHFFFAOYSA-N terbium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Tb+3].[Tb+3] SCRZPWWVSXWCMC-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910000050 copper hydride Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910000103 lithium hydride Inorganic materials 0.000 description 1
- SIAPCJWMELPYOE-UHFFFAOYSA-N lithium hydride Chemical compound [LiH] SIAPCJWMELPYOE-UHFFFAOYSA-N 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- FWQVINSGEXZQHB-UHFFFAOYSA-K trifluorodysprosium Chemical compound F[Dy](F)F FWQVINSGEXZQHB-UHFFFAOYSA-K 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 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
- H01F41/0293—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 diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
-
- 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 (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010077816.XA CN111210987B (zh) | 2020-02-01 | 2020-02-01 | 一种r-t-b磁体材料及其制备方法和应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010077816.XA CN111210987B (zh) | 2020-02-01 | 2020-02-01 | 一种r-t-b磁体材料及其制备方法和应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111210987A CN111210987A (zh) | 2020-05-29 |
CN111210987B true CN111210987B (zh) | 2021-11-05 |
Family
ID=70784958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010077816.XA Active CN111210987B (zh) | 2020-02-01 | 2020-02-01 | 一种r-t-b磁体材料及其制备方法和应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111210987B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113593882B (zh) * | 2021-07-21 | 2023-07-21 | 福建省长汀卓尔科技股份有限公司 | 2-17型钐钴永磁材料及其制备方法和应用 |
CN117316565B (zh) * | 2023-10-18 | 2024-09-20 | 宁波合力磁材技术有限公司 | 一种再生钕铁硼磁体及其制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009197296A (ja) * | 2008-02-25 | 2009-09-03 | Sumitomo Metal Mining Co Ltd | 希土類−遷移金属−窒素系磁石粉末の製造方法、得られる希土類−遷移金属−窒素系磁石粉末、及びそれを用いたボンド磁石用組成物、並びにボンド磁石 |
CN108154988A (zh) * | 2016-12-06 | 2018-06-12 | Tdk株式会社 | R-t-b系永久磁铁 |
CN108922708A (zh) * | 2018-07-11 | 2018-11-30 | 董开 | 一种烧结稀土永磁体的制备方法及旋转式扩散氢碎一体炉 |
CN110444385A (zh) * | 2019-08-09 | 2019-11-12 | 浙江英洛华磁业有限公司 | 一种提升Nd-Fe-B磁体矫顽力的工艺 |
CN110571007A (zh) * | 2019-09-03 | 2019-12-13 | 厦门钨业股份有限公司 | 一种稀土永磁材料、原料组合物、制备方法、应用、电机 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7462403B2 (en) * | 2003-06-27 | 2008-12-09 | Tdk Corporation | R-T-B system permanent magnet |
-
2020
- 2020-02-01 CN CN202010077816.XA patent/CN111210987B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009197296A (ja) * | 2008-02-25 | 2009-09-03 | Sumitomo Metal Mining Co Ltd | 希土類−遷移金属−窒素系磁石粉末の製造方法、得られる希土類−遷移金属−窒素系磁石粉末、及びそれを用いたボンド磁石用組成物、並びにボンド磁石 |
CN108154988A (zh) * | 2016-12-06 | 2018-06-12 | Tdk株式会社 | R-t-b系永久磁铁 |
CN108922708A (zh) * | 2018-07-11 | 2018-11-30 | 董开 | 一种烧结稀土永磁体的制备方法及旋转式扩散氢碎一体炉 |
CN110444385A (zh) * | 2019-08-09 | 2019-11-12 | 浙江英洛华磁业有限公司 | 一种提升Nd-Fe-B磁体矫顽力的工艺 |
CN110571007A (zh) * | 2019-09-03 | 2019-12-13 | 厦门钨业股份有限公司 | 一种稀土永磁材料、原料组合物、制备方法、应用、电机 |
Non-Patent Citations (1)
Title |
---|
烧结钕铁硼磁体晶界扩散Dy/DyFe工艺研究;宫清等;《稀土》;20150831;第36卷(第4期);120-126 * |
Also Published As
Publication number | Publication date |
---|---|
CN111210987A (zh) | 2020-05-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2273513A1 (en) | R-t-b-type sintered magnet and method for production thereof | |
EP2302646A1 (en) | R-t-cu-mn-b type sintered magnet | |
EP4113544A1 (en) | Neodymium-iron-boron magnet material, raw material composition, preparation method therefor and use thereof | |
CN111223624B (zh) | 一种钕铁硼磁体材料、原料组合物及制备方法和应用 | |
CN111223627B (zh) | 钕铁硼磁体材料、原料组合物、制备方法、应用 | |
CN110323053B (zh) | 一种R-Fe-B系烧结磁体及其制备方法 | |
KR102589802B1 (ko) | 네오디뮴철붕소 자성체재료, 원료조성물과 제조방법 및 응용 | |
WO2015149685A1 (zh) | 一种含W的R‐Fe‐B‐Cu系烧结磁铁及急冷合金 | |
KR102632991B1 (ko) | 네오디뮴철붕소 자성체 재료, 원료조성물과 제조방법 및 응용 | |
WO2012008623A1 (ja) | 希土類磁石の製造方法、及び希土類磁石 | |
KR20220042195A (ko) | 네오디뮴철붕소 자성체재료, 원료조성물과 제조방법 및 응용 | |
CN111326306B (zh) | 一种r-t-b系永磁材料及其制备方法和应用 | |
KR20210151950A (ko) | 희토류 영구자석 재료 및 그 원료조성물, 제조방법과 응용 | |
CN111210987B (zh) | 一种r-t-b磁体材料及其制备方法和应用 | |
CN111223625A (zh) | 钕铁硼磁体材料、原料组合物及制备方法和应用 | |
EP4439594A1 (en) | Neodymium-iron-boron magnet as well as preparation method therefor and use thereof | |
CN111524674A (zh) | 一种钕铁硼磁体材料、原料组合物及制备方法、应用 | |
CN113936879B (zh) | 一种含La的R-T-B稀土永磁体 | |
CN111540557A (zh) | 一种钕铁硼磁体材料、原料组合物及制备方法、应用 | |
WO2024098719A1 (zh) | 一种具有非晶晶界相的高强度r-t-b稀土永磁体及其制备方法 | |
CN111091945B (zh) | 一种r-t-b系永磁材料、原料组合物、制备方法、应用 | |
CN112768170A (zh) | 一种稀土永磁体及其制备方法 | |
CN113096952B (zh) | 一种钕铁硼磁材的制备方法 | |
CN113517104B (zh) | 主辅相合金钐钴磁体材料、烧结体用材料、其制备方法和应用 | |
EP4425512A1 (en) | Neodymium-iron-boron magnet material, preparation therefor, and application thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20220624 Address after: 366300 new industrial zone, Changting Economic Development Zone, Longyan City, Fujian Province Patentee after: FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH Co.,Ltd. Address before: 361000 Ke Gang, Haicang District, Fujian, Xiamen Patentee before: XIAMEN TUNGSTEN Co.,Ltd. Patentee before: FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH Co.,Ltd. |
|
TR01 | Transfer of patent right | ||
CP01 | Change in the name or title of a patent holder |
Address after: 366300 new industrial zone, Changting Economic Development Zone, Longyan City, Fujian Province Patentee after: Fujian Jinlong Rare Earth Co.,Ltd. Address before: 366300 new industrial zone, Changting Economic Development Zone, Longyan City, Fujian Province Patentee before: FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH Co.,Ltd. |
|
CP01 | Change in the name or title of a patent holder |