Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10914343 | Ball bearing | Hikaru Ishida, Chiharu Ito | 2021-02-09 |
| 9982716 | Synthetic resin retainer and ball bearing | Hikaru Ishida | 2018-05-29 |
| 9631672 | Solid-lubrication rolling bearing | Hisanori Aiga, Hiroki Manabe, Takahiro Gotou, Yoshinori Ito, Fuminori Satoji | 2017-04-25 |
| 9074630 | Roller bearing | Miki Arihana, Yoji Sato, Hideyuki Tsutsui, Kouya Oohira | 2015-07-07 |
| 8227950 | Rolling bearing, spindle support structure of main motor for railway vehicle, and bearing structure | Katsunori Sone, Hideji Ito, Tsukasa Yamakawa | 2012-07-24 |
| 8044544 | Rolling bearing, spindle support structure of main motor for railway vehicle, and bearing structure | Katsunori Sone, Hideji Ito, Tsukasa Yamakawa | 2011-10-25 |
| 7503697 | Rolling bearing assembly having an improved resistance to electric corrosion | Hideji Ito | 2009-03-17 |