Masaoki Sekine

Tdk: 1 patents #42 of 130Top 35%

📍 Saku, JP: #8 of 13 inventorsTop 65%

Overall (1989): #78,900 of 140,708Top 60%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4802049	Disc cartridge	Kimio Tanaka	1989-01-31