Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7445840 | Weather-resistant synthetic wood material | Shuji Nishizaki | 2008-11-04 |
| 6427405 | Joint material and execution method thereof | Kenichi Hasagawa | 2002-08-06 |
| 6102407 | Joint seal and assembly method thereof | Kenichi Hasegawa | 2000-08-15 |
| 5377737 | Screen retractor mechanism | Mitsuhiko Chino | 1995-01-03 |