Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6762004 | Charge control agent and toner for developing electrostatic images | Akihide Isoda | 2004-07-13 |
| 6756485 | Process for preparing a monoazo metal complex salt compound for charge control agent and toner for developing electrostatic images | Masashi Yasumatsu, Akihiro Tada | 2004-06-29 |
| 6548648 | Process for preparing a monoazo metal complex salt compound for charge control agent and toner for developing electrostatic images | Masashi Yasumatsu, Akihiro Tada | 2003-04-15 |
| 6534231 | Charge control agent and toner for developing electrostatic images | Akihide Isoda | 2003-03-18 |
| 6326113 | Charge control agent manufacturing process thereof and toner for developing electrostatic images | Toshiyuki Okuda, Yoshitaka Taguchi, Akihiro Tada | 2001-12-04 |
| 6197467 | Charge control agent, manufacturing process therefor and toner | Kazuaki Sukata, Masashi Yasumatsu | 2001-03-06 |
| 6153735 | Monoazo metal compound, composition thereof, charge control agent, toner and powdery paint | Kazuaki Sukata, Shuji Sugawara, Tohru Tsuruhara, Masashi Yasumatsu | 2000-11-28 |
| 5990332 | Metal compound of aromatic hydroxycarboxylic acid, charge control agent, toner, and powdery paint | Kazuaki Sukata, Tohru Tsuruhara, Shuji Sugawara, Masashi Yasumatsu | 1999-11-23 |
| 5976749 | Metal compound of aromatic hydroxycarboxylic acid, charge control agent, toner, and powdery paint | Kazuaki Sukata, Tohru Tsuruhara, Shuji Sugawara, Masashi Yasumatsu | 1999-11-02 |
| 5952145 | Calix arene charge control agent and toner for developing electrostatic images | Kazuaki Sukata | 1999-09-14 |
| 5843611 | Monoazo metal compound, composition thereof, charge control agent, toner and powdery paint | Kazuaki Sukata, Shuji Sugawara, Tohru Tsuruhara, Masashi Yasumatsu | 1998-12-01 |
| 5736289 | Toner for developing electrostatic images | Kazuaki Sukata | 1998-04-07 |
| 5518852 | Negative charge control agent and toner for developing electrostatic image | Kazuaki Sukata, Shuji Sugawara | 1996-05-21 |
| 5501934 | Chargeable resin powder | Kazuaki Sukata, Shuji Sugawara | 1996-03-26 |
| 5501932 | Charge control agent and toner for developing electrostatic images | Shuji Sugawara, Kazuaki Sukata | 1996-03-26 |
| 5470685 | Toner for developing electrostatic images | Shuji Sugawara, Kazuaki Sukata | 1995-11-28 |
| 5407774 | Charge control agent and positively chargeable toner for developing electrostatic images | Chiemi Matsushima, Tetsuji Kihara, Kazuaki Sukata | 1995-04-18 |