Inventor

AKATSUKA MASAYUKI

2 patents

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

NGK SPARK PLUG CO

1 patent

US4304576ADec 8, 1981

Silicon nitride ceramic tools and a process for their production

NGK SPARK PLUG CO111 citations94

SUMITOMO ELECTRIC INDUSTRIES

1 patent

US4364023ADec 14, 1982

Optical character reading system

SUMITOMO ELECTRIC INDUSTRIES5 citations60