KI

Kohei Ishizuka

HI Hitachi: 6 patents #6,582 of 28,497Top 25%
HD Hitachi Denshi: 2 patents #77 of 275Top 30%
Overall (All Time): #890,754 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5479288 Light transmission module Masaya Nakata, Teruhisa Azumaguchi, Junji Takeda, Hiroki Irie, Atushi Miura +3 more 1995-12-26
4531089 Electric power detecting circuit and gain control circuit using the same Yasuhiro Kita, Narimichi Maeda, Masahiro Koya, Kazuhiko Takaoka, Yoshiro Kokuryo 1985-07-23
4477913 Automatic equalizer apparatus Masahiro Koya, Narimichi Maeda, Kazuhiko Takaoka, Yoshiro Kokuryo, Yasuhiro Kita 1984-10-16
4292596 Gain control circuit Yasuhiro Kita, Narimichi Maeda 1981-09-29
4204176 Variable equalizer Yoshitaka Takasaki, Yasuhiro Kita, Junichi Nakagawa 1980-05-20
4187479 Variable equalizer Yoshitaka Takasaki, Yasuhiro Kita, Yoshinori Nagoya, Takeo Kusama 1980-02-05