Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4937969 | Hydroponic system | Toshikazu Tomioka | 1990-07-03 |
| 4302906 | Soilless culture device | Yozo Yoshino, Yozo Jizodo | 1981-12-01 |
HK
Hidehiko Kawabe
Overall (All Time): #2,324,754 of 4,157,543Top 60%
2
Patents All Time