Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8444111 | Combined valve | — | 2013-05-21 |
| 7971599 | Air-operated valve | Tatsuhito Aoyama, Takashi Yajima, Tadaichi Hamada | 2011-07-05 |
| D549077 | Portion of a valve | Takashi Yajima | 2007-08-21 |
| D541905 | Valve | Takashi Yajima | 2007-05-01 |
| D535549 | Portion of a valve | Takashi Yajima | 2007-01-23 |
| D527073 | Valve | Takashi Yajima | 2006-08-22 |
| 6648296 | Hand-operated valve with locking mechanism | Takashi Yajima | 2003-11-18 |
| D463011 | Valve | Takashi Yajima | 2002-09-17 |