Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6623564 | Method of recovering synthetic substrates | Masatoshi Yamaguchi, Takahito Kikukawa, Kyoichi Kishi, Yoshihiro Tuyuki, Kouichi Oota +2 more | 2003-09-23 |
| 4238848 | Electronic timepiece | Isao Yamaguchi, Heiji Hashizume, Hirosige Sugihara | 1980-12-09 |