Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673602 | Method and apparatus for making perforations continuously | Hiroshi Seikai, Koichi Takahashi, Hiroshi Tsuzaki | 1997-10-07 |
| 5462240 | Photographic film cassette and method of assembling the photographic film cassette | Toshiro Esaki, Susumu Sato, Kohichi Takahashi, Makoto Shimizu | 1995-10-31 |
| 5437828 | Method for manufacturing a spool of a photographic film cassette | Makoto Shimizu, Susumu Sato, Koichi Takahashi, Toshiro Esaki | 1995-08-01 |