Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6815605 | Silicon single crystal and wafer doped with gallium and method for producing them | Takao Abe, Teruhiko Hirasawa, Katsushi Tokunaga, Masafumi Yamaguchi | 2004-11-09 |
| 6764548 | Apparatus and method for producing silicon semiconductor single crystal | Ryoji Hoshi, Takahiro Yanagimachi, Izumi Fusegawa, Tomohiko Ohta, Yuuichi Miyahara | 2004-07-20 |