Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5963370 | Support structure for tensely extending and supporting film or sheet | — | 1999-10-05 |
| 5809624 | Film stretching structure | Hitomu Watanabe, Hiroshi Kojima, Makoto Honda | 1998-09-22 |
| 5513036 | Projection screen | Hitomu Watanabe, Makoto Honda, Hiroshi Kojima | 1996-04-30 |
| 5477380 | Projection screen | Hitomu Watanabe, Akira Izawa, Makoto Honda, Hiroshi Kojima | 1995-12-19 |