Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6219965 | Plant growth sheet structure, natural turf sheet structure, method of growing turf and method of laying turf sheet structure | Yoshio Ishikawa, Hiroaki Fukumoto, Tatsuo Hatado, Akira Taga, Kaoru Yamada | 2001-04-24 |
| 5394659 | Openable and closeable roof construction | Mamoru Kawaguchi, Tatsuo Hatato | 1995-03-07 |
| 5371983 | Dome shaped roof structure | Mamoru Kawaguchi, Tatsuo Hatato, Akira Taga, Ikuo Tatemichi | 1994-12-13 |
| 5257485 | Openable and closeable roof construction | Mamoru Kawaguchi, Tatsuo Hatato, Kaoru Yamada, Akira Taga | 1993-11-02 |