Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5834634 | Method and apparatus for measuring the toner concentration and the amount of electric charge of a two-component developing agent | Koji Honda, Haruo Koyama, Nobuaki Kawano | 1998-11-10 |
| 4632522 | Optical system of variable magnification and a method for varying magnification of the same | — | 1986-12-30 |