Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5496688 | Base film for photographic film | Hiroshi Okamoto, Kohtaro Katoh, Hiroshi Tomita, Kenji Suzuki | 1996-03-05 |
| 5085933 | Film for use as thermosensitive stencil printing cardboard sheet | Kotaro Katoh, Hiroshi Tomita | 1992-02-04 |