Sim; Yong-Bo
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sim; Yong-Bo.The latest application filed is for "method for heat-treating uppermost surface of spheroidal graphite cast iron and spheroidal graphite cast iron heat-treated by th".
- Sim; Yong-Bo - Seoul KR
| Patent | Date |
|---|---|
| Method For Heat-treating Uppermost Surface Of Spheroidal Graphite Cast Iron And Spheroidal Graphite Cast Iron Heat-treated By Th App 20200216923 - Kwon; Eun-Soo ; et al. | 2020-07-09 |
| High-strength special steel Grant 10,487,380 - Cha , et al. Nov | 2019-11-26 |
| High-strength Special Steel App 20180051364 - CHA; Sung Chul ; et al. | 2018-02-22 |
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