KK

Katuya Kumagai

TO Toshiba: 2 patents #606 of 2,688Top 25%
KT Kabushiki Kaisha Toshiba: 1 patents #13,537 of 21,451Top 65%
Overall (All Time): #1,679,638 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4540627 Magnetic recording medium Akio Ishizawa, Toshio Hukaya, Tatuo Takeuchi 1985-09-10
4511617 Magnetic recording medium Shozo Hideyama, Akio Ishizawa, Minoru Hashimoto 1985-04-16
4395435 Method for manufacturing information recording medium Hideo Sanpei, Kunio Matsuno, Shyoji Hirano 1983-07-26