Inventor
HAMADA MASAHIKO
JP21 patents
⚠️ This page may combine multiple inventors who share the name “HAMADA MASAHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO METAL IND
8 patentsUS6183573B1Feb 6, 2001
High-toughness, high-tensile-strength steel and method of manufacturing the same
SUMITOMO METAL IND78 citations94
US6379821B2Apr 30, 2002
Martensitic stainless steel welded pipe
SUMITOMO METAL IND39 citations92
US6188037B1Feb 13, 2001
Welded high-strength steel structures and method of manufacturing the same
SUMITOMO METAL IND63 citations91
US6953508B2Oct 11, 2005
High strength steel weld having improved resistance to cold cracking and a welding method
SUMITOMO METAL IND22 citations90
US6059175AMay 9, 2000
Method for joining metallic materials by diffusion bonding and joined structure thereby
SUMITOMO METAL IND24 citations89
US6045630AApr 4, 2000
High-toughness, high-tensile-strength steel and method of manufacturing the same
SUMITOMO METAL IND10 citations71
US7780800B2Aug 24, 2010
Method of manufacturing a bent pipe
SUMITOMO METAL IND1 citations52
US7770428B2Aug 10, 2010
Hot bend pipe and a process for its manufacture
SUMITOMO METAL IND1 citations52