Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5124618 | Shatter-proof fluorescent lamp | Yoshinori Ohtaka, Haruo Shibata, Toyokazu Amano, Shigeru Kamiya | 1992-06-23 |
| 4705986 | High color rendering fluorescent lamp | Katsuaki Iwama, Haruo Shibata | 1987-11-10 |