Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9068615 | Spring having excellent corrosion fatigue strength | Masami Wakita | 2015-06-30 |
| 8936236 | Coil spring for automobile suspension and method of manufacturing the same | Tomohiro Nakano, Takayuki Sakakibara, Shingo Mimura, Masami Wakita | 2015-01-20 |
| 8789817 | Spring steel and spring having superior corrosion fatigue strength | Tomohiro Nakano, Takayuki Sakakibara, Masami Wakita, Shingo Mimura | 2014-07-29 |
| 8349095 | Spring steel and spring having superior corrosion fatigue strength | Tomohiro Nakano, Takayuki Sakakibara, Masami Wakita, Shingo Mimura | 2013-01-08 |
| 8328169 | Spring steel and spring having superior corrosion fatigue strength | Tomohiro Nakano, Takayuki Sakakibara, Masami Wakita, Shingo Mimura | 2012-12-11 |