Inventor
YAMANE KOUJI
JP9 patents
⚠️ This page may combine multiple inventors who share the name “YAMANE KOUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL & SUMITOMO METAL CORP
6 patentsUS11313005B2Apr 26, 2022
Seamless steel pipe and method for producing the seamless steel pipe
NIPPON STEEL & SUMITOMO METAL CORP2 citations66
US9308561B2Apr 12, 2016
Method of producing seamless metal pipe
NIPPON STEEL & SUMITOMO METAL CORP0 citations51
US9283600B2Mar 15, 2016
Plug for hot pipe making
NIPPON STEEL & SUMITOMO METAL CORP1 citations51
US9221087B2Dec 29, 2015
Method of producing seamless metal pipe
NIPPON STEEL & SUMITOMO METAL CORP0 citations51
US9545658B2Jan 17, 2017
Piercing apparatus, plug used for piercing apparatus, and method for producing seamless steel pipe
NIPPON STEEL & SUMITOMO METAL CORP0 citations47
US9486845B2Nov 8, 2016
Inner surface regulation tool, plug, mandrel, hot rolling mill, press piercing machine, and drawing machine
NIPPON STEEL & SUMITOMO METAL CORP0 citations41