Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7878229 | Hollow structure plate, manufacturing method thereof, manufacturing device thereof, and sound absorbing structure plate | Masahiko Nakajima, Takeshi Miyazaki, Takayuki Oda | 2011-02-01 |