Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047225 | Method for water hammerless opening of fluid passage, and method for supplying chemical solutions and device for water hammerless opening for which the method is used | Tadahiro Ohmi, Kouji Nishino, Masaaki Nagase, Ryousuke Dohi, Nobukazu Ikeda | 2011-11-01 |
| 8020574 | Method for closing fluid passage, and water hammerless valve device and water hammerless closing device used in the method | Tadahiro Ohmi, Nobukazu Ikeda, Kouji Nishino, Masaaki Nagase, Kyousuke Dohi | 2011-09-20 |