Inventor

OTSUKA MASASUKE

JP2 patents

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

NIPPON SHIKEN KOGYO KK

1 patent

US4828420AMay 9, 1989

Interdental tooth cleaning appliance

NIPPON SHIKEN KOGYO KK64 citations87

OTSUKA MASASUKE

1 patent

US4411863AOct 25, 1983

Low-carat corrosion-resistant gold alloy with the skin of the alloy not being blacked upon casting

OTSUKA MASASUKE4 citations51