KO

Kyoichi Oka

SE Seiko Epson: 5 patents #2,973 of 7,774Top 40%
Overall (All Time): #1,034,559 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
7018455 Ink composition, recording medium, ink jet recording method, and printed matter Kazuhiko Kitamura, Yasuhiro Oki, Tetsuya Aoyama, Nobuo Uotani, Hiroshi Takahashi +1 more 2006-03-28
6852154 Ink set Kazuhiko Kitamura, Hiroko Hayashi 2005-02-08
6811597 Ink composition, recording medium, inkjet recording method, and recording Yasuhiro Oki, Kazuhiko Kitamura, Tetsuya Aoyama, Nobuo Uotani, Hiroshi Takahashi +1 more 2004-11-02
6761759 Ink composition, ink jet recording method and recorded matter Yasuhiro Oki, Kazuhiko Kitamura, Tetsuya Aoyama, Nobuo Uotani, Hiroshi Takahashi +1 more 2004-07-13
6514330 Ink composition containing copper complex colorant Miharu Kanaya, Kazuaki Watanabe 2003-02-04