Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5073797 | Toner sealing arrangement for a dry developing device of an electrostatic copier | Taizo Ono, Hirotsugu Sakamoto, Yoshihiro Katayama | 1991-12-17 |
| 4947211 | Developing device | Taizo Ono, Yoshihiro Katayama | 1990-08-07 |