Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5738942 | Semiconductor silicon wafer and process for producing it | Atsuko Kubota, Norihiko Tsuchiya, Shuichi Samata, Masanori Numano, Yoshihiro Ueno | 1998-04-14 |
| 5534294 | Process for producing Semiconductor silicon wafer | Atsuko Kubota, Norihiko Tsuchiya, Shuichi Samata, Masanori Numano, Yoshihiro Ueno | 1996-07-09 |
| 5073229 | Semiconductor crystal pulling method | Youji Yamashita | 1991-12-17 |
| 5034200 | Crystal pulling apparatus and crystal pulling method | Youji Yamashita | 1991-07-23 |
| 5021225 | Crystal pulling apparatus and crystal pulling method using the same | Youji Yamashita | 1991-06-04 |
| 4894206 | Crystal pulling apparatus | Youji Yamashita, Yoshiaki Matsushita, Masanobu Ogino | 1990-01-16 |
| 4734267 | Apparatus for growing compound semiconductor single crystals | — | 1988-03-29 |
| 4497777 | Apparatus for producing monocrystalline silicon | — | 1985-02-05 |