Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647897 | Ink composition for ink jet recording | Yasuhiro Ouki, Hiroko Hayashi, Kiyohiko Takemoto, Masaaki Itano | 1997-07-15 |
| 5616174 | Ink composition and ink jet recording method using the same | Akio Owatari, Junko Takatsuna, Masahiro Yatake, Hiroko Hayashi, Takashi Ono +2 more | 1997-04-01 |