Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7914209 | Bearing seal and swing device | Hiroshi Yamamoto, Jun Maruyama | 2011-03-29 |
| 7748907 | Bearing seal and swing device | Hiroshi Yamamoto, Jun Maruyama | 2010-07-06 |
| 7651274 | Spherical slide bearing system | Hiroshi Yamamoto, Yasunori Sato, Tatsuo Aira, Akinobu Iwasaki | 2010-01-26 |
| 7513690 | Bearing seal and swing device | Hiroshi Yamamoto, Jun Maruyama | 2009-04-07 |
| 6774340 | Shape of microdot mark formed by laser beam and microdot marking method | Teiichirou Chiba | 2004-08-10 |