YS

Yoshihiro Sawatari

OC Orient Chemical Industries Co.: 6 patents #20 of 105Top 20%
SE Seiko Epson: 3 patents #3,864 of 7,774Top 50%
Overall (All Time): #756,168 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
6858069 Black aqueous ink composition, ink jet recording process using the same, and recorded matter Tetsuya Aoyama, Kazuhiko Kitamura, Hiroshi Fukumoto, Shuji Sugawara, Makiko Matsui 2005-02-22
6632932 Trisazo compound Makiko Matsui, Shuji Sugawara 2003-10-14
5795970 Mixed disazo-dye composition and black aqueous ink composition containing the same that provides high grade image on print Takashi Ono, Tatsuya Yagyu, Masaki Sasaki, Miharu Kanaya, Hiroko Hayashi +2 more 1998-08-18
5667571 Solvent-based black ink composition Takashi Ono, Tatsuya Yagyu 1997-09-16
5616174 Ink composition and ink jet recording method using the same Miharu Kanaya, Akio Owatari, Junko Takatsuna, Masahiro Yatake, Hiroko Hayashi +2 more 1997-04-01
5340929 Trisazo dye and dye composition containing the same Takashi Ono, Tatsuya Yagyu, Masaki Yonezawa 1994-08-23
5336763 Trisazo dye and dye composition containing the same Takashi Ono, Tatsuya Yagyu, Masaki Yonezawa 1994-08-09