Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5369321 | Optical recording medium | Tadahiko Mizukuki, Tomoyoshi Sasakawa, Yuko Suzuki, Kouichi Shiina | 1994-11-29 |
| 5344682 | Optical recording medium | Tadahiko Mizukuki, Nobuhisa Kitagawa, Sumio Hirose | 1994-09-06 |
| 5283094 | Optical recording medium | Tomoyoshi Sasakawa, Nobuhisa Kitagawa, Hiroyuki Hyakutake | 1994-02-01 |