Issued Patents All Time
Showing 151–153 of 153 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4234212 | Recording sheet | Yasuhiro Ogata | 1980-11-18 |
| 4227931 | Self-hardening mold sand | Hiroshi Uchikawa | 1980-10-14 |
| 4219219 | Developers for pressure-sensitive recording and developing sheets containing them | Kozo Sato | 1980-08-26 |