Issued Patents All Time
Showing 1–25 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11555099 | Method for producing colorable material | Maiko Miyoshi, Takafumi Hara | 2023-01-17 |
| 11427726 | Inks | Maiko Miyoshi, Takafumi Hara | 2022-08-30 |
| 11009808 | Toner cartridge and image forming apparatus | Kazuhisa Takeda, Masahiro Ikuta, Takafumi Hara, Hiromichi Mitamura, Shigeru Fujiwara +1 more | 2021-05-18 |
| 10962894 | Decolorizable toner, toner cartridge, image forming apparatus, decolorizing system, decolorizing method, and decolorizing device | Takafumi Hara | 2021-03-30 |
| 10962895 | Decolorizable toner, toner cartridge, image forming apparatus, decolorizing system, decolorizing method, and decolorizing device | Takafumi Hara | 2021-03-30 |
| 10816912 | Toner cartridge and image forming apparatus using toner characteristics for improving image quality | Kazuhisa Takeda, Masahiro Ikuta, Takafumi Hara, Hiromichi Mitamura, Shigeru Fujiwara +1 more | 2020-10-27 |
| 10809646 | Toner cartridge and image forming apparatus | Kazuhisa Takeda, Masahiro Ikuta, 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, Masahiro Ikuta, Yasuhito Noda, Kazuhisa Takeda, Takayasu Aoki | 2020-06-16 |
| 10063727 | Marking apparatus and decoloring apparatus | Kazuhisa Takeda, Yoshihito Shimada, Yasuhito Noda, Masahiro Ikuta, Takafumi Hara | 2018-08-28 |
| 9939747 | Developing agent and method for producing the same | Takahito Kabai | 2018-04-10 |
| 9933721 | Electrophotographic toner and method for producing the same | Masahiro Ikuta, Takahito Kabai, Takayasu Aoki | 2018-04-03 |
| 9821590 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Masahiro Ikuta, Takafumi Hara, Motonari Udo, Takayasu Aoki +1 more | 2017-11-21 |
| 9798260 | Decolorizable toner | Takafumi Hara, Masahiro Ikuta, 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, Masahiro Ikuta, Kazuhisa Takeda, Takayasu Aoki, Takafumi Hara | 2017-09-12 |
| 9555657 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Masahiro Ikuta, 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, Masahiro Ikuta, Kazuhisa Takeda, Takayasu Aoki, Takafumi Hara | 2017-01-10 |
| 9519236 | Reversibly allochroic toner, method of producing the same, toner cartridge, and image forming apparatus | Takafumi Hara, Masahiro Ikuta, Yasuhito Noda, Kazuhisa Takeda, Takayasu Aoki | 2016-12-13 |
| 9500969 | Electrophotographic toner and method for producing the same | Masahiro Ikuta, Takahito Kabai, Takayasu Aoki | 2016-11-22 |
| 9494885 | Developing agent and method for producing the same | Takahito Kabai | 2016-11-15 |
| 9366983 | Decolorizable toner | Takafumi Hara, Masahiro Ikuta, Motonari Udo, Kazuhisa Takeda | 2016-06-14 |
| 9360781 | Toner set for printing system and printing system | Takayasu Aoki, Takafumi Hara, Masahiro Ikuta, Kazuhisa Takeda, Yasuhito Noda | 2016-06-07 |
| 9348249 | Image forming apparatus and image forming and decoloring system | Masahiro Ikuta, Kazuhisa Takeda, Yasuhito Noda, Takayasu Aoki, Takafumi Hara | 2016-05-24 |
| 9336914 | Radioactive waste solidification method | Kenji Noshita, Takashi Asano | 2016-05-10 |
| 9291950 | Apparatus and method for forming an image with a non-decolorizable material and a decolorizable material | Motonari Udo, Masahiro Ikuta, Kazuhisa Takeda, Takayasu Aoki, Takafumi Hara | 2016-03-22 |
| 9277075 | Color erasing apparatus, color erasing system and color erasing control method | Kazuhisa Takeda, Masahiro Ikuta, Takafumi Hara, Motonari Udo, Takayasu Aoki +1 more | 2016-03-01 |