Inventor
IMAI RYUICHI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “IMAI RYUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO METAL IND
4 patentsUS7883118B2Feb 8, 2011
Threaded joint for steel pipes
SUMITOMO METAL IND8 citations83
US7866706B2Jan 11, 2011
Threaded joint for steel pipe
SUMITOMO METAL IND13 citations83
US7770935B2Aug 10, 2010
Threaded joint for steel pipes
SUMITOMO METAL IND13 citations80
US7066209B2Jun 27, 2006
Thread protector
SUMITOMO METAL IND5 citations61
GOTO KUNIO
4 patentsUS9321982B2Apr 26, 2016
Threaded joint for pipes
GOTO KUNIO8 citations81
US8420581B2Apr 16, 2013
Threaded joint for pipes having a lubricating coating
GOTO KUNIO6 citations68
US8741406B2Jun 3, 2014
Oil well pipe with threaded joint
GOTO KUNIO1 citations61
US8409718B2Apr 2, 2013
Threaded joint for steel pipes
GOTO KUNIO1 citations61