Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5788763 | Manufacturing method of a silicon wafer having a controlled BMD concentration | Ryuji Takeda, Katsuhiro Chaki, Ping Xin, Jun Yoshikawa, Hiroyuki Saito | 1998-08-04 |
| 4836965 | Method of producing heat treating furnace member | Takashi Tanaka | 1989-06-06 |
| 4753763 | Method of manufacturing heating furnace parts | Takashi Tanaka | 1988-06-28 |
| 4619798 | Method of manufacturing parts for use to the heat processing furnace | Takashi Tanaka | 1986-10-28 |