Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8481885 | Laser narrow groove welding apparatus and welding method | Takeshi Tsukamoto, Hirotsugu Kawanaka, Shinji Imaoka, Tetsuya Kuwano, Taiji Hashimoto | 2013-07-09 |
| 8426766 | Welding method and welding apparatus for an impeller | Takeshi Tsukamoto, Hiromi Kobayashi, Hideto Nogiwa, Tetsuya Kuwano, Ryujiro Udo +1 more | 2013-04-23 |
| 8408873 | Welding slot sealing structure and welding method | Masaaki Iwasa, Takeshi Tsukamoto, Hideto Nogiwa, Tetsuya Kuwano, Hiromi Kobayashi +1 more | 2013-04-02 |
| 6283305 | Filter apparatus with backwashing mechanism | Go Endo, Takayuki Ishihara | 2001-09-04 |
| 6209728 | Filter element | Go Endoh | 2001-04-03 |
| 5653870 | Filter system | Teruaki Tsuchiya, Yuusuke FUJII | 1997-08-05 |