Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6899265 | Electric joining method and apparatus and a joined unit of members | Masao Tokita, Hitoshi Karasawa, Fumitake Nishiyama | 2005-05-31 |
| 6515250 | Electric joining method and apparatus and a joined unit of members | Masao Tokita, Hitoshi Karasawa, Fumitake Nishiyama | 2003-02-04 |
| 6478498 | Ball for ball-point pen and ball-point pen | Hitoshi Karasawa | 2002-11-12 |