Inventor
YAMADA RYUZO
JP6 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA RYUZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DAIDO STEEL CO LTD
3 patentsUS6332361B1Dec 25, 2001
Method for evaluating bonding properties of a metallic pipe
DAIDO STEEL CO LTD28 citations91
US6378760B1Apr 30, 2002
Method for manufacturing joint of carbon steel pipes suitable for expansion and expanding method
DAIDO STEEL CO LTD25 citations89
US6592154B2Jul 15, 2003
Metal-pipe bonded body, pipe expansion method of metal-pipe bonded body, and method for inspecting metal-pipe bonded body
DAIDO STEEL CO LTD4 citations60