Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7896956 | Method for regenerating filter and apparatus thereof | Yoshinori Koyama, Osamu Shinada, Yuichiro Kitagawa, Ryouji Takahira, Kazunari Imagama | 2011-03-01 |
| 7780143 | Gate valve | Yasunari Shibata, Yoshinori Koyama, Taizo Hoshino, Shuji Kameyama, Yasuhiro Suzuki +3 more | 2010-08-24 |