Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6809015 | Method for heat treatment of silicon wafers and silicon wafer | Norihiro Kobayashi, Yuuichi Matsumoto, Masaro Tamatsuka | 2004-10-26 |
| 6806199 | Method for manufacturing silicon mirror wafer, silicon mirror wafer, and heat treatment furnace | Norihiro Kobayashi | 2004-10-19 |
| 6799630 | Tube for heat exchangers and method of manufacturing the same | Soichi Kato, Muneo Sakurada, Shin Kurihara, Sadao Haiya, Takashi Sugita +1 more | 2004-10-05 |
| 6770167 | Production method of and production apparatus for optical recording disc | Kokichi Kohinata, Yoshinori Itaba | 2004-08-03 |
| 6702920 | Production method of and production apparatus for optical recording disc | Kokichi Kohinata, Yoshinori Itaba, Tokuhiro Morioka | 2004-03-09 |
| 6680260 | Method of producing a bonded wafer and the bonded wafer | Masaro Tamatsuka | 2004-01-20 |