Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7621643 | Projection apparatus, ceiling hanging hardware for projection apparatus, and method of controlling operation of projection apparatus | Shigeru Hirosawa | 2009-11-24 |
| 5786050 | Easy opening pouch | Yoshiaki Otsuka, Hiroshi Hasegawa, Shoji Ito | 1998-07-28 |
| 5312659 | Laminated film bag for packaging food | Yoshiaki Otsuka, Yotaro Tsutsumi | 1994-05-17 |