TO

Tetsuya Okana

Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
Overall (All Time): #1,605,940 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6783435 Method of manufacturing magnetic head, and magnetic recording and reproducing apparatus Shinya Ogasawara, Mitsuhisa Fujiki, Satoshi Yamabayashi 2004-08-31
6640418 Method of manufacturing a head unit Mitsuhisa Fujiki, Satoshi Yamabayashi, Shinya Ogasawara 2003-11-04
6233812 Rotary head device, magnetic head unit and manufacturing method thereof Mitsuhisa Fujiki, Hiroshi Yoda, Masayuki Hino, Suekazu Kugioka 2001-05-22