Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6719445 | Back cover for a lamp body | — | 2004-04-13 |
| 6619830 | Back cover for lamp body | Katsumi Takao | 2003-09-16 |
| 5463118 | N-(l-aspartyl)amino alcohol derivative and sweetener containing the same | Yoshifumi Yuasa, Yoshiki Okeda, Akio Tachikawa, Haruki Tsuruta | 1995-10-31 |
| 4969783 | Method of working fresnel step | Yasuo Ozawa, Koichi Sakakibara, Noboru Kojima, Seiji Igarashi | 1990-11-13 |