Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6552211 | Zirconium compound and electrophotographic toner employing it | Masataka Sawano, Taito Muraoka, Katuya Yamaguti, Rie Murakami | 2003-04-22 |
| 6410198 | Zirconium compound and electrophotographic toner employing it | Masataka Sawano, Taito Muraoka, Katuya Yamaguti, Rie Murakami | 2002-06-25 |
| 6110634 | Electrophotographic toner | Masataka Sawano, Taito Muraoka, Yutaka Saitoh, Rie Murakami | 2000-08-29 |
| 5883232 | Hydrophobic cationic dyes and thermal transfer ink ribbons using the same | Masanobu Hida, Kengo Ito, Yoshio Fujiwara, Nobuo Suzuki, Junichi Hagiwara | 1999-03-16 |
| 5834600 | Hydrophobic cationic dyes and thermal transfer ink ribbons using the same | Masanobu Hida, Kengo Ito, Yoshio Fujiwara, Nobuo Suzuki, Junichi Hagiwara | 1998-11-10 |
| 5770341 | Friction charge-providing member for positively-chargeable toner | Osamu Mukudai, Yuji Matsuura | 1998-06-23 |
| 5693445 | Electrostatic image developing toner | Noboru Akuzawa, Nobuo Suzuki | 1997-12-02 |
| 5645967 | Charge controlling agent composition and toner containing said composition | Sinichi Sato, Nobuo Suzuki, Sigeo Hosaka | 1997-07-08 |
| 5641884 | Spiro-naphtho-oxazine compound and photosensitive materials using the same | Akira Utsunomiya, Shinichi Sato, Nobuo Suzuki | 1997-06-24 |
| 5164283 | Electrophotographic developing powder | Isao Niimura, Mitsutoshi Anzai, Noboru Akuzawa | 1992-11-17 |
| 4977249 | Metal of hydroxy-phenylaze and hydroxy-naphthylazo compounds as near-red absorbers | Yuto Matsumoto, Noboru Akuzawa, Toshio Obara | 1990-12-11 |
| 4624907 | Electrophotographic toner containing metal complex | Isao Niimura, Katsuichi Motohashi, Noboru Akuzawa | 1986-11-25 |
| 4433040 | Electrophotographic toner containing a metal complex dye | Isao Niimura, Hiroshi Imagome, Noboru Akuzawa, Kenji Yuta, Takeo Kurahashi | 1984-02-21 |