Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5887788 | Steel pipe connector of ladder-type sleeper for railway track | Hajime Wakui, Yoshitaka Soga, Saburo Inoue | 1999-03-30 |
| 5712737 | Method and apparatus for automatically editing audio signals | Masami Tsubaki, Shuhei Kanaoka, Koji Kosaka, Yoshiyuki Yahagi, Toshiyuki Yamazaki +2 more | 1998-01-27 |
| 5582346 | Ladder-type sleepers and railway tracks | Hajime Wakui, Nobuyuki Matsumoto | 1996-12-10 |