Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11009808 | Toner cartridge and image forming apparatus | Tsuyoshi Itou, Kazuhisa Takeda, Takafumi Hara, Hiromichi Mitamura, Shigeru Fujiwara +1 more | 2021-05-18 |
| 10816912 | Toner cartridge and image forming apparatus using toner characteristics for improving image quality | Tsuyoshi Itou, Kazuhisa Takeda, Takafumi Hara, Hiromichi Mitamura, Shigeru Fujiwara +1 more | 2020-10-27 |
| 10809646 | Toner cartridge and image forming apparatus | Tsuyoshi Itou, Kazuhisa Takeda, Takafumi Hara, Hiromichi Mitamura, Shigeru Fujiwara +1 more | 2020-10-20 |
| 10684568 | Reversibly allochroic toner, method of producing the same, toner cartridge, and image forming apparatus | Takafumi Hara, Tsuyoshi Itou, Yasuhito Noda, Kazuhisa Takeda, Takayasu Aoki | 2020-06-16 |
| 10073368 | Developer with toner and carrier, and image forming apparatus using the same | Sunao Takenaka | 2018-09-11 |
| 10063727 | Marking apparatus and decoloring apparatus | Kazuhisa Takeda, Yoshihito Shimada, Tsuyoshi Itou, Yasuhito Noda, Takafumi Hara | 2018-08-28 |
| 9933721 | Electrophotographic toner and method for producing the same | Takahito Kabai, Takayasu Aoki, Tsuyoshi Itou | 2018-04-03 |
| 9821590 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Tsuyoshi Itou, Takafumi Hara, Motonari Udo, Takayasu Aoki +1 more | 2017-11-21 |
| 9798260 | Decolorizable toner | Takafumi Hara, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda | 2017-10-24 |
| 9757969 | Apparatus and method for forming an image with a non-decolorizable material and a decolorizable material | Motonari Udo, Kazuhisa Takeda, Tsuyoshi Itou, Takayasu Aoki, Takafumi Hara | 2017-09-12 |
| 9645519 | Developer with toner and carrier, and image forming apparatus using the same | Sunao Takenaka | 2017-05-09 |
| 9555657 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Tsuyoshi Itou, Takafumi Hara, Motonari Udo, Takayasu Aoki +1 more | 2017-01-31 |
| 9539843 | Apparatus and method for forming an image with a non-decolorizable material and a decolorizable material | Motonari Udo, Kazuhisa Takeda, Tsuyoshi Itou, Takayasu Aoki, Takafumi Hara | 2017-01-10 |
| 9519236 | Reversibly allochroic toner, method of producing the same, toner cartridge, and image forming apparatus | Takafumi Hara, Tsuyoshi Itou, Yasuhito Noda, Kazuhisa Takeda, Takayasu Aoki | 2016-12-13 |
| 9500969 | Electrophotographic toner and method for producing the same | Takahito Kabai, Takayasu Aoki, Tsuyoshi Itou | 2016-11-22 |
| 9366983 | Decolorizable toner | Takafumi Hara, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda | 2016-06-14 |
| 9360781 | Toner set for printing system and printing system | Takayasu Aoki, Takafumi Hara, Tsuyoshi Itou, Kazuhisa Takeda, Yasuhito Noda | 2016-06-07 |
| 9348249 | Image forming apparatus and image forming and decoloring system | Kazuhisa Takeda, Tsuyoshi Itou, Yasuhito Noda, Takayasu Aoki, Takafumi Hara | 2016-05-24 |
| 9291950 | Apparatus and method for forming an image with a non-decolorizable material and a decolorizable material | Motonari Udo, Kazuhisa Takeda, Tsuyoshi Itou, Takayasu Aoki, Takafumi Hara | 2016-03-22 |
| 9277075 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Tsuyoshi Itou, Takafumi Hara, Motonari Udo, Takayasu Aoki +1 more | 2016-03-01 |
| 9261805 | Toner set for printing system and printing system | Takayasu Aoki, Takafumi Hara, Tsuyoshi Itou, Kazuhisa Takeda, Yasuhito Noda | 2016-02-16 |
| 9217941 | Method of manufacturing erasable toner | Tsuyoshi Itou, Kazuhisa Takeda, Yasuhito Noda, Takayasu Aoki, Takafumi Hara +1 more | 2015-12-22 |
| 9128394 | Electrophotographic toner and method for producing the same | Takafumi Hara, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda | 2015-09-08 |
| 8940468 | Decolorable toner and process for production thereof | Takayasu Aoki, Takafumi Hara, Tsuyoshi Itou, Motonari Udo, Koji Shimokusa +1 more | 2015-01-27 |
| 8790857 | Toner and process for production thereof | Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda, Takayasu Aoki, Takafumi Hara | 2014-07-29 |