Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7018485 | Apparatus for subjecting rare earth alloy to hydrogenation process and method for producing rare earth sintered magnet using the apparatus | Akihito Tsujimoto, Katsumi Okayama, Tadayoshi Muneto | 2006-03-28 |
| 6755883 | Punch, powder pressing apparatus and powder pressing method | Seiichi Kohara | 2004-06-29 |
| 6656417 | Punch, powder pressing apparatus and powder pressing method | Seiichi Kohara | 2003-12-02 |
| 6649124 | Powder pressing apparatus and powder pressing method | Seiichi Kohara, Tsutomu Harada | 2003-11-18 |
| 6332932 | Punch, powder pressing apparatus and powder pressing method | Seiichi Kohara | 2001-12-25 |