EP-4570948-A4 - SURFACE TREATMENT METHOD FOR PERMANENT MAGNET, PERMANENT MAGNET AND PROTECTIVE FILM THEREOF
EP4570948A4EP 4570948 A4EP4570948 A4EP 4570948A4EP-4570948-A4
Inventors
- ZHANG YANYAN
- LIANG YAMIN
- FU DONGHUI
- Lai Huoxiu
- HUANG JIAYING
Assignees
- FUJIAN GOLDEN DRAGON RARE EARTH CO LTD
Dates
- Publication Date
- 20260506
- Application Date
- 20230423
- Priority Date
- 20221025