SO

Sumio Obata

HI Hitachi: 2 patents #13,388 of 28,497Top 50%
HC Hitachi Computer Peripherals Co.: 2 patents #20 of 133Top 20%
HG HGST: 2 patents #738 of 1,677Top 45%
Overall (All Time): #1,246,482 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7488183 Data storage device and connector disposed therein Yoshiroh Amano, Kohji Takahashi, Naoyuki Yamazaki, Shigeru Ohyama 2009-02-10
7457068 Magnetic disk drive with efficient power generation Nobuhiko Wasa, Masahiro Shimizu 2008-11-25
5657176 Method and apparatus for optimizing the recording and reproducing of information from magnetic disks Yoshihiro Moribe, Tetsuji Kameoka, Toshiaki Tsuyoshi 1997-08-12
5430581 Method and apparatus for optimizing the recording and reproducing of information from magnetic disks Yoshihiro Moribe, Tetsji Kameoka, Toshiaki Tsuyoshi 1995-07-04