Inventor
ONO SUMIO
JP8 patents
⚠️ This page may combine multiple inventors who share the name “ONO SUMIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RIKEN KK
5 patentsUS5129661AJul 14, 1992
Steel oil ring assembly
RIKEN KK22 citations90
US5087055AFeb 11, 1992
Steel oil ring assembly
RIKEN KK7 citations71
US4542907ASep 24, 1985
Corrugated expander for piston ring assembly
RIKEN KK16 citations70
US5088743AFeb 18, 1992
Combined oil ring assembly
RIKEN KK0 citations39
US5042825AAug 27, 1991
Combined oil ring assembly
RIKEN KK0 citations39