SO

Sadahiro Ohyama

MC Mitsumi Electric Co.: 5 patents #171 of 935Top 20%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #892,653 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5119272 Circuit board and method of producing circuit board Noriaki Sekine, Jiro Nakano, Tetsuya Takahashi, Yasumi Ushikubo, Masahiro Hirano 1992-06-02
4851935 Drum assembly for a magnetic recording and reproducing apparatus Yoshiaki Morita, Yoshiaki Ueno, Kazuhiro Tazawa 1989-07-25
4756593 Connector comprising a plug having a built-in optoelectronic conversion means and a socket Yasumasa Koakutsu, Seiichi Onoda, Masao Yano, Junichi Shimizu, Noriaki Sekine +4 more 1988-07-12
4737008 Optical transmitting and/or receiving module Noriaki Sekine, Noribumi Ishi, Toshio Takeuchi, Hideji Matsuura, Masatoshi Watanabe +1 more 1988-04-12
4437140 Printed circuit device Hiroshi Kato, Sadao Yaguchi, Mikito Baba, Morikazu Okada 1984-03-13
4404617 High-frequency circuit device having a circuit board fixed to a shield casing by projections of the shield casing and soldering Hiroshi Kato, Kazuo Matsukawa 1983-09-13