Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5591349 | Microorganism removing method | Akira Ikeda, Naoki Nakatsugawa, Yumiko Yoshimura, Yasuhiro Tanimura | 1997-01-07 |
| 5323567 | Plant cultivating apparatus | Shigeki Nakayama, Akira Ikeda, Yoshitaka Kawaai, Yasuko Taniguchi, Yoshinori Hattori +3 more | 1994-06-28 |
| 5174793 | Method of enhancing plant growth using light levels lower than photo saturation intensity | Akira Ikeda, Shigeki Nakayama, Toshitsugu Ishii | 1992-12-29 |
| 4817332 | Method of enhancing plant growth and apparatus for performing the same | Akira Ikeda, Shigeki Nakayama, Toshitsugu Ishii, Isao Itakura | 1989-04-04 |