Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7681326 | All weather passive-type solar Ogako drying house | Tomoyoshi Sugawara, Kimio Kanayama, Shoshichi Sotoda, Kazuhiko Sotoda, Hiromu Baba +6 more | 2010-03-23 |
| 7637030 | Fully passive-type solar lumber drying house | Tomoyoshi Sugawara, Kimio Kanayama, Shoshichi Sotoda, Kazuhiko Sotoda, Hiromu Baba +2 more | 2009-12-29 |