Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823821 | Combustion method and apparatus for NOx reduction | Toshihiro Kayahara, Noboru Takubo, Kenji Matunari, Kyosuke Okubo | 2004-11-30 |
| 6764019 | Method for servicing and maintaining heat supply equipment | Toshihiro Kayahara, Yasuo Watanabe | 2004-07-20 |
| 6626366 | System for servicing and maintaining heat supply equipment | Toshihiro Kayahara, Yasuo Watanabe | 2003-09-30 |
| 6470837 | Method for servicing and maintaining heat supply equipment | Toshihiro Kayahara, Yasuo Watanabe | 2002-10-29 |
| 6190611 | Hardness indicator | Yoshitami Tsubota, Sadatoshi Takechi, Junichi Nakajima, Masazumi Yamashita, Katsufumi Isshiki +2 more | 2001-02-20 |
| 5938414 | Liquid feeding apparatus having a cassette accommodating an elastic tube | Toshihiro Kayahara, Yoshitami Tsubota, Sadatoshi Takechi, Yuuji Ukena, Satoshi Wakasa +2 more | 1999-08-17 |
| 5584914 | Membrane deaerator apparatus | Yasutoshi Senoo, Hitoshi Shiraishi, Norio Yasu, Yasuhiro Kawakami, Yukinori Tobisaka +6 more | 1996-12-17 |