Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5449542 | Honeycomb curtain wall and a honeycomb panel for a honeycomb curtain wall | Harumi Chiba | 1995-09-12 |
| 4931340 | Honeycomb panel structure | Keizo Nanba, Yoshio Takeshima, Hiromichi Sano, Koji Tobita, Atsuo Muneto +2 more | 1990-06-05 |