Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4521605 | Carbazole compounds and process for preparing the same | Hideo Okazaki, Susumu Suzuka, Kiyoshi Sakai | 1985-06-04 |
| 4433040 | Electrophotographic toner containing a metal complex dye | Isao Niimura, Hiroyoshi Yamaga, Noboru Akuzawa, Kenji Yuta, Takeo Kurahashi | 1984-02-21 |