Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819211 | Process for surface-treatment of hollow work having hole communicating with outside, and ring-shaped bonded magnet produced by the process | Kohshi Yoshimura, Takeshi Nishiuchi | 2004-11-16 |