Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9341366 | Water-chamber working apparatus and water-chamber working method | Jun Fujita, Atsushi Kamiyoshi | 2016-05-17 |
| 8973265 | Installation method of water-chamber working apparatus | Jun Fujita, Atsushi Kamiyoshi | 2015-03-10 |
| 5629272 | Low phosphorous engine oil compositions and additive compositions | Morikuni Nakazato, Jiro Magarifuchi | 1997-05-13 |