Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8426766 | Welding method and welding apparatus for an impeller | Takeshi Tsukamoto, Yoshihisa Maeda, Hiromi Kobayashi, Tetsuya Kuwano, Ryujiro Udo +1 more | 2013-04-23 |
| 8408873 | Welding slot sealing structure and welding method | Masaaki Iwasa, Takeshi Tsukamoto, Tetsuya Kuwano, Yoshihisa Maeda, Hiromi Kobayashi +1 more | 2013-04-02 |
| 6802689 | Turbo type fluid machine and dry gas seal for use therefor | — | 2004-10-12 |
| 6524059 | Turbo fluid machinery and dry gas seal used for the machinery | — | 2003-02-25 |
| 6398484 | Centrifugal compressor and shaft seal | Hideaki Orikasa | 2002-06-04 |