Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10684568 | Reversibly allochroic toner, method of producing the same, toner cartridge, and image forming apparatus | Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Kazuhisa Takeda, Takayasu Aoki | 2020-06-16 |
| 10063727 | Marking apparatus and decoloring apparatus | Kazuhisa Takeda, Yoshihito Shimada, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara | 2018-08-28 |
| 9821590 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo +1 more | 2017-11-21 |
| 9555657 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo +1 more | 2017-01-31 |
| 9519236 | Reversibly allochroic toner, method of producing the same, toner cartridge, and image forming apparatus | Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Kazuhisa Takeda, Takayasu Aoki | 2016-12-13 |
| 9360781 | Toner set for printing system and printing system | Takayasu Aoki, Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Kazuhisa Takeda | 2016-06-07 |
| 9348249 | Image forming apparatus and image forming and decoloring system | Masahiro Ikuta, Kazuhisa Takeda, Tsuyoshi Itou, Takayasu Aoki, Takafumi Hara | 2016-05-24 |
| 9277075 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo +1 more | 2016-03-01 |
| 9261805 | Toner set for printing system and printing system | Takayasu Aoki, Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Kazuhisa Takeda | 2016-02-16 |
| 9217941 | Method of manufacturing erasable toner | Tsuyoshi Itou, Kazuhisa Takeda, Takayasu Aoki, Masahiro Ikuta, Takafumi Hara +1 more | 2015-12-22 |
| 9201327 | Electrophotographic toner | Takayasu Aoki, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama | 2015-12-01 |
| 8691487 | Electrophotographic toner | Takayasu Aoki, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama | 2014-04-08 |
| 8486598 | Electrophotographic toner | Takayasu Aoki, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama | 2013-07-16 |
| 8465897 | Electrophotographic toner | Takayasu Aoki, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama | 2013-06-18 |
| 8227167 | Developing agent and method for producing developing agent | Tsuyoshi Itou, Takayasu Aoki, Takashi Urabe, Motonari Udo, Satoshi Araki +3 more | 2012-07-24 |
| 8029962 | Developing agent | Takayasu Aoki, Motonari Udo, Masahiro Ikuta, Tsuyoshi Itou, Takashi Urabe +2 more | 2011-10-04 |
| 8012661 | Method for producing developing agent | Motonari Udo, Takayasu Aoki, Takashi Urabe, Tsuyoshi Itou, Satoshi Araki +2 more | 2011-09-06 |
| 7960086 | Developing agent and method for manufacturing the same | Takayasu Aoki, Takashi Urabe, Takafumi Hara, Tsuyoshi Itou, Masahiro Ikuta +3 more | 2011-06-14 |
| 7901862 | Developing agent and method for manufacturing the same | Tsuyoshi Itou, Takayasu Aoki, Takashi Urabe, Motonari Udo, Satoshi Araki +2 more | 2011-03-08 |
| 7851120 | Developing agent and method for producing the same | Takashi Urabe, Takayasu Aoki, Tsuyoshi Itou, Motonari Udo, Satoshi Araki +3 more | 2010-12-14 |
| 7846634 | Developing agent | Takashi Urabe, Satoshi Araki, Takayasu Aoki, Tsuyoshi Ito, Motonari Udo +2 more | 2010-12-07 |
| 7211360 | Developing agent | Shuitsu Sato, Takashi Urabe | 2007-05-01 |
| 7172845 | Developing agent and image forming apparatus using the same | Shuitsu Sato, Takashi Urabe, Takahito Kabai, Yuichi Hori, Taishi Takano | 2007-02-06 |
| 7150951 | Developing agent | Shuitsu Sato, Takashi Urabe | 2006-12-19 |
| 7018759 | Developing agent | Shuitsu Sato, Takashi Urabe | 2006-03-28 |