AK

Arthur K. Kato

3M: 2 patents #5,326 of 11,543Top 50%
SO Sony: 1 patents #17,262 of 25,231Top 70%
Overall (All Time): #2,323,856 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D307893 Magnetic recording disk cartridge Vurnen J. Leonard, Osamu Sakurai, Osamu Koizumi 1990-05-15
4875128 Disc cartridge Vurnen J. Leonard, Kiyoshi Ohmori, Keisuke Fujiwara, Yutaka Soda 1989-10-17