Inventor
CHIJIIWA RIKIO
JP8 patents
⚠️ This page may combine multiple inventors who share the name “CHIJIIWA RIKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL CORP
5 patentsUS5723089AMar 3, 1998
Line pipe metal arc welded with wire alloy
NIPPON STEEL CORP11 citations71
US4790885ADec 13, 1988
Method of producing high tensile-high toughness steel
NIPPON STEEL CORP9 citations68
US8361248B2Jan 29, 2013
Steel superior in CTOD properties of weld heat-affected zone and method of production of same
NIPPON STEEL CORP2 citations59
US7918948B2Apr 5, 2011
Method of production of 780 MPa class high strength steel plate excellent in low temperature toughness
NIPPON STEEL CORP1 citations48
US7857917B2Dec 28, 2010
Method of production of steel for welded structures excellent in low temperature toughness of weld heat affected zone
NIPPON STEEL CORP0 citations40