Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5923922 | Image forming apparatus with flying toner detecting device | Toshihisa Ishida, Katuaki Sumida, Jitsuo Masuda, Masato Asanuma, Katsushi Inoue +3 more | 1999-07-13 |
| 5839018 | Toner density control for an image forming apparatus | Masato Asanuma, Toshiaki Ino, Hideji Saiko, Toshihisa Ishida, Katsuaki Sumida +8 more | 1998-11-17 |
| 5759735 | Method for preparing developer for use in electrophotographic printing | Tadashi Nakamura, Hirofumi Sakita, Toshihiko Murakami, Yoshiaki Akazawa | 1998-06-02 |
| 5266433 | Developer for electrophotography | Toshihisa Ishida, Tadashi Nakamura, Nobuhiko Nakano, Takeaki Oouti, Shintaro Hatano | 1993-11-30 |