Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9146484 | Toners for electrostatic-image development | Masaya Ota, Tomohiko Tokunaga | 2015-09-29 |
| 7544456 | Toner for developing electrostatic charge image | Masatoshi Murayama | 2009-06-09 |
| 6720123 | Process for producing toner for developing electrostatic image | Yuqing Xu, Tomohiko Tokunaga, Toyomasa Hoshino | 2004-04-13 |
| 6656653 | Toner for the development of electrostatic image and method for producing the same | Osamu Ando, Noriaki Takahashi, Tomoko Ishikawa, Yuqing Xu | 2003-12-02 |
| 5389419 | Optical recording medium comprising a dye-incorporated composition | Shuichi Maeda, Satoru Imamura, Takako Tsukahara | 1995-02-14 |
| 5330542 | Dye-incorporated composition | Shuichi Maeda, Satoru Imamura, Takako Tsukahara | 1994-07-19 |
| 4962013 | Photochromic material containing a spirooxazine and a nitroxy free radical triplet state quencher | Yasuo Tateoka, Masashi Ito, Shuichi Maeda, Tetsuo Murayama | 1990-10-09 |