Choi; Hae-Chang

Patent Applications and Registrations

Patent applications and USPTO patent grants for Choi; Hae-Chang.The latest application filed is for "method for manufacturing steel plate having superior toughness in weld heat-affected zone".

Company Profile

0.5.5

Choi; Hae-Chang - Pohang-si KR
Choi, Hae-Chang - Kyungsangbook-do KR

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method for manufacturing steel plate having superior toughness in weld heat-affected zone Grant 7,396,423 - Jeong , et al. July 8, 2	2008-07-08
Steel plate having superior toughness in weld heat-affected zone and welded structure made therefrom Grant 7,105,066 - Jeong , et al. September 12, 2	2006-09-12
Steel plate having TiN+ZrN precipitates for welded structures, method for manufacturing same and welded structure made therefrom Grant 6,966,955 - Choi , et al. November 22, 2	2005-11-22
Steel plate having Tin+MnS precipitates for welded structures, method for manufacturing same and welded structure Grant 6,946,038 - Jeong , et al. September 20, 2	2005-09-20
Method for manufacturing steel plate having superior toughness in weld heat-affected zone App 20050173030 - Jeong, Hong-Chul ; et al.	2005-08-11
Steel plate having superior toughness in weld heat-affected zone and method for manufacturing the same, and welded structure made therefrom App 20040144454 - Jeong, Hong-Chul ; et al.	2004-07-29
Steel plate having TiN+CuS precipitates for welded structures, method for manufacturing same and welded structure made therefrom Grant 6,686,061 - Jeong , et al. February 3, 2	2004-02-03
Steel plate to be precipitating tinfor weleded structures, method for manufacturing the same, welding fabric using the same App 20030131914 - Jeong, Hong-Chul ; et al.	2003-07-17
Steel plate to be precipitating tinfor welded structures,method for manufacturing the same and welding fabric using the same App 20030121577 - Choi, Hae-Chang ; et al.	2003-07-03
Steel plate to be precipitating tinfor welded structures, method for manufacturing the same and welding fabric using the same App 20030106623 - Jeong, Hong-Chul ; et al.	2003-06-12

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