Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738832 | Tripod joint spider, method of manufacturing the same, and alloy steel applied thereto | — | 2020-08-11 |
| 10060014 | Bearing steel having improved fatigue durability and method of manufacturing the same | Sung Chul Cha, Young Sang Ko, Moon Ki Bae, Seung Hyun Hong | 2018-08-28 |
| 9957595 | Carburized alloy steel having improved durability and method of manufacturing the same | Sung Chul Cha, Moon Ki Bae, Seung Hyun Hong | 2018-05-01 |