NS

Naozumi Sugimura

HI Hitachi: 22 patents #1,535 of 28,497Top 6%
MA Maxell: 3 patents #182 of 437Top 45%
Samsung: 2 patents #37,631 of 75,807Top 50%
HM Hitachi Maxell: 1 patents #659 of 1,211Top 55%
Overall (All Time): #137,382 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 26–28 of 28 patents

Patent #TitleCo-InventorsDate
6175683 Digital signal recording and reproduction apparatus suitable for recording and reproducing a compressed video signal Hiroo Okamoto 2001-01-16
5903704 Apparatus for selectively recording and reproducing received analog and digital signals Hitoaki Owashi, Takaharu Noguchi, Hiroo Okamoto, Kyoichi Hosokawa, Kazuhiko YOSHIZAWA +3 more 1999-05-11
5532835 Tracking control in apparatus for fast reproducing digital information signal from magnetic tape Harushige Nakagaki, Takao Arai, Yasunori Ohara 1996-07-02