Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928037 | Protected discharge lamp lighting system | Kenji Kawabata, Soichiro Ogawa | 1990-05-22 |
| 4614874 | Original document size detecting arrangement | Hiroaki Fukuda, Kenji Sumiyoshi, Zempei Tani | 1986-09-30 |