Inventor
AKIYAMA MASAYOSHI
JP16 patents
⚠️ This page may combine multiple inventors who share the name “AKIYAMA MASAYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO METAL IND
4 patentsUS7788957B2Sep 7, 2010
Apparatus for pipe end sizing and method for pipe end sizing
SUMITOMO METAL IND9 citations82
US5477719ADec 26, 1995
Inclined-rolling method and inclined rolling apparatus
SUMITOMO METAL IND4 citations62
US7401486B2Jul 22, 2008
Die, method of manufacturing stepped metal pipe or tube, and stepped metal pipe or tube
SUMITOMO METAL IND3 citations61
US7765850B2Aug 3, 2010
Mechanical pipe-end expander and a method of manufacturing seamless steel pipe
SUMITOMO METAL IND4 citations59