Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11664252 | Cleaning device, polishing device, and device and method for calculating rotation speed of substrate in cleaning device | Michiaki MATSUDA, Hisajiro Nakano, Yusuke Watanabe, Junji Kunisawa | 2023-05-30 |
| 8028715 | Check valve for vacuum sewage pipe and vacuum sewage system | Osamu Shimizu, Yuji Hiroto, Keisuke Ikeda | 2011-10-04 |