Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10388812 | Method of recycling solar cell module | Takanori Kawanishi, Yoshiaki Hayashi, Toshirou Motoji | 2019-08-20 |
| 7043194 | Learning system | Shigeru Hoyashita, Yasuyuki Ikegami | 2006-05-09 |
| 6865368 | System and method for producing educational material | Shigeru Hoyashita, Yasuyuki Ikegami | 2005-03-08 |