Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6303987 | Compression bonded type semiconductor device | Toshinobu Kawamura | 2001-10-16 |
| 6218683 | Diode | Shinji Koga, Kazuhiro Morishita | 2001-04-17 |
| 5804841 | Optical trigger thyristor and fabrication method | Kenji Ohta | 1998-09-08 |
| 5742716 | Light trigger thyristor | Junichiro Yamashita, Takeshi Nakamura, Kazunori Taguchi | 1998-04-21 |
| 5637886 | Thyristor with improved dv/dt resistance | Kenichi Honda, Kazuhiko Niwayama | 1997-06-10 |
| 5543363 | Process for adhesively attaching a semiconductor device to an electrode plate | Futoshi Tokunoh | 1996-08-06 |
| 5371386 | Semiconductor device and method of assembling the same | Futoshi Tokunoh | 1994-12-06 |
| 5189509 | Semiconductor device and electrode block for the same | Futoshi Tokunoh | 1993-02-23 |
| 5066384 | Process for refining coal-derived heavy carbonaceous materials | Tohru Iwahashi, Yoshihiko Sunami, Katsuyuki Ohshima, Kenichi Iwaguro | 1991-11-19 |
| 4455148 | Method for de-ashing and transportation of coal | Kenichi Nagata, Shigeru Nagamori, Yuuichi Katoh, Takashi Yano | 1984-06-19 |