Inventor

WATANABE JOICHI

JP2 patents

⚠️ This page may combine multiple inventors who share the name “WATANABE JOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RIKEN PISTON RING IND CO LTD

1 patent

US3947046AMar 30, 1976

Oil seal ring for internal combustion engine

RIKEN PISTON RING IND CO LTD18 citations76

NAITO YOSHITAKA

1 patent

US8609754B2Dec 17, 2013

Flame-retardant thermoplastic resin composition and molded article thereof

NAITO YOSHITAKA0 citations31