Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8322079 | Sash windows | Jin Goto, Hiroyuki Sasaki, Akio Ozawa, Tsutomu Ito | 2012-12-04 |
| 7681360 | Sash window assembly | Jin Goto, Hiroyuki Sasaki, Akio Ozawa, Tsutomu Ito | 2010-03-23 |