Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9011760 | Hardening device | Hiroko Watanabe, Masayuki Koyama, Hideo Miyashita | 2015-04-21 |
| 8569664 | Hardening method and hardening device | Hiroko Watanabe, Masayuki Koyama, Hideo Miyashita | 2013-10-29 |
| 8274022 | Induction heater and induction heating method | Takehiko Nagao | 2012-09-25 |