Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7633677 | Reflective screen | Masatoshi Niwa, Hajime Maruta, Yuji Sawamura, Ken Kikuchi, Tomoya Yano | 2009-12-15 |
| 7221508 | Reflex-type screen | Hajime Maruta, Yuji Sawamura, Masatoshi Niwa | 2007-05-22 |