Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9587708 | Automatic heat treatment method for metal ring | Yoshiharu Watabe, Hiroyuki Tsuyuzaki | 2017-03-07 |
| 8998004 | Conveyance rack, method for retaining metal ring, and method for heat treatment of metal ring | Yoshiharu Watabe, Kensuke Shiota | 2015-04-07 |
| 8544305 | Conveying jig, method of manufacturing conveying jig, and method of heat-treating metal rings using conveying jig | Yoshiharu Watabe, Seiichi Minegishi, Tetsuo Suzuki, Masashi Takagaki | 2013-10-01 |