Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12292124 | Check valve | Takeshi Ouchi, Eiji Hara | 2025-05-06 |
| 12209747 | Boiler | Kazuyuki Otani | 2025-01-28 |
| D1057094 | Check valve | Takeshi Ouchi, Eiji Hara | 2025-01-07 |
| 11828373 | Check valve | Takeshi Ouchi, Kazuhiro Ota, Daisuke Kikuchi, Kazuhiko Kojima, Futoshi Hasegawa +2 more | 2023-11-28 |
| 11371695 | Boiler | Kazuyuki Otani, Kazunobu Inoue, Hidetaka Yamamoto | 2022-06-28 |
| 10907743 | Check valve and reciprocating body for check valve | Takeshi Ouchi, Daisuke Kikuchi, Kazuhiko Kojima, Futoshi Hasegawa, Kohei Mizutani | 2021-02-02 |
| 9161116 | Headphone apparatus | — | 2015-10-13 |
| 7291313 | NOx removal system for boilers | Satoshi Wakasa, Noboru Takubo, Yukihiro Isshiki, Kouichi Masuda | 2007-11-06 |
| 7223372 | NOx removal system for boilers | Satoshi Wakasa, Noboru Takubo, Yukihiro Isshiki, Kouichi Masuda | 2007-05-29 |
| 6823290 | Method and system for inspecting thermal equipment | Tsuneo Sakamoto | 2004-11-23 |
| 6772095 | Method and system for servicing and maintaining thermal equipment, water treatment equipment and the like | Tsuneo Sakamoto | 2004-08-03 |
| 6638487 | Method for controlling NOx removal system in boiler | Satoshi Wakasa, Noboru Takubo, Yukihiro Isshiki, Kouichi Masuda | 2003-10-28 |