Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5839880 | Bearing unit, drainage pump and hydraulic turbine each incorporating the bearing unit, and method of manufacturing the bearing unit | Ryoji Okada, Masayuki Yamada, Kenji Otani, Kunio Takada, Mitsuaki Haneda +1 more | 1998-11-24 |
| 5458460 | Drainage pump and a hydraulic turbine incorporating a bearing member, and a method of manufacturing the bearing member | Ryoji Okada, Masayuki Yamada, Kenji Otani, Kunio Takada, Mitsuaki Haneda +1 more | 1995-10-17 |
| 5297927 | Vertical shaft type pump | Katsutoshi Nii, Ryoji Okada, Masayuki Yamada, Kunio Takada | 1994-03-29 |
| 5035519 | Submersible thrust bearing apparatus | Katsutoshi Nii, Kazuhiko Kawaike, Kengo Hasegawa, Akira Saruta, Ryoichi Nakashima | 1991-07-30 |