YK

Yasumasa Koakutsu

HI Hitachi: 5 patents #7,555 of 28,497Top 30%
MC Mitsumi Electric Co.: 1 patents #527 of 935Top 60%
Overall (All Time): #1,061,453 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5052768 Device for retaining wire-like optical wave-guide Syuji Matumoto 1991-10-01
4756593 Connector comprising a plug having a built-in optoelectronic conversion means and a socket Seiichi Onoda, Masao Yano, Junichi Shimizu, Sadahiro Ohyama, Noriaki Sekine +4 more 1988-07-12
4741595 Optical transmission device Seiichi Onoda, Masaaki Kusano, Tamio Takeuchi, Syouji Yamada, Masao Yano +3 more 1988-05-03
4720630 Active optical connector including an electronic circuit board and an optical fiber Tamio Takeuchi, Junichi Shimizu, Masao Yano, Minoru Ikenoue, Seiichi Onoda 1988-01-19
4715673 Optical switch Takanobu Noro, Tamio Takeuchi, Masao Yano, Seiichi Onoda, Hideo Arima +2 more 1987-12-29