Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11735150 | Keyboard device | Hitoshi Sato, Mutsuo Sawada | 2023-08-22 |
| 6931215 | Optical transmitter module | Kazuyuki Fukuda, Hideyuki Kuwano, Makoto Shimaoka | 2005-08-16 |
| 5055990 | Snubber circuit for power conversion semiconductor elements and assembly thereof | Hiroshi Miki, Kiyoshi Iida, Hiromu Takubo, Kunio Shibayama, Shinichi Kobayashi | 1991-10-08 |
| 4778902 | Method of purifying L-ascorbic acid | Tetsuji Kaizu, Masami Shinohara | 1988-10-18 |
| 4767870 | Method of purifying L-ascorbic acid | Tetsuji Kaizu | 1988-08-30 |
| 4402194 | Ice making apparatus to be incorporated in refrigerators | Tomohisa Kuwako | 1983-09-06 |