Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5993524 | Image recording method, image recording apparatus and image recording acceleration liquid | Kiyofumi Nagai, Akio Kojima, Masato Igarashi, Akiko Bannai, Hiroyuki Mochizuki +2 more | 1999-11-30 |
| 5972082 | Aqueous ink composition and ink-jet printing method using the same | Ikuko Yamada, Akio Kojima, Kiyofumi Nagai, Masato Igarashi, Akiko Konishi +2 more | 1999-10-26 |
| 5882390 | Recording ink composition and recording method using the same | Kiyofumi Nagai, Akio Kojima, Masato Igarashi, Akiko Konishi, Hiroyuki Mochizuki +2 more | 1999-03-16 |
| 5879439 | Recording ink composition and recording method using the same | Kiyofumi Nagai, Akio Kojima, Masato Igarashi, Akiko Konishi, Hiroyuki Mochizuki +2 more | 1999-03-09 |
| 5810915 | Aqueous ink composition and image formation method using the same | Kiyofumi Nagai, Akiko Konishi | 1998-09-22 |
| 5622550 | Yellow ink composition for ink-jet printing and image recording method using the same | Akiko Konishi, Kiyofumi Nagai | 1997-04-22 |
| 5618935 | Tricyclic pyrazine compound and electrophotographic photoconductor comprising the same | Masayuki Shoshi, Yumi Ichikawa, Kaoru Teramura, Megumi Kawahara | 1997-04-08 |
| 5578405 | Electrophotographic photoconductor containing disazo and trisazo pigments | Takaaki Ikegami, Eiji Kurimoto, Takashi Rokutanzono, Katsuichi Ohta, Masaomi Sasaki +3 more | 1996-11-26 |
| 5460909 | Pyrazine compound and electrophotographic photoconductor comprising the same | Masayuki Shoshi, Yumi Ichikawa, Kaoru Teramura, Megumi Kawahara | 1995-10-24 |