YK

Yoji Kumazaki

Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
PA Panasonic: 1 patents #13,264 of 21,108Top 65%
📍 Kasugai, JP: #87 of 97 inventorsTop 90%
Overall (All Time): #2,130,459 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7860255 Content distribution server, key assignment method, content output apparatus, and key issuing center Masao Nonaka, Yuichi Futa, Motoji Ohmori, Shigeru Yamada, Tetsuya Inoue 2010-12-28
7401232 Content playback apparatus method and program and key management apparatus and system Takatoshi Ono, Shigeru Yamada, Hiroki Murakami, Tetsuya Inoue, Motoji Ohmori 2008-07-15