Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6594451 | Image forming apparatus, and use situation reporting system for reporting use situations of developer and other consumables stowed in image forming apparatus | Tomomi Kakeshita, Hiroshi Sasame, Shinya Yamamoto | 2003-07-15 |
| 6587649 | Image forming apparatus, cartridge detachably mountable to the image forming apparatus, developer remainder displaying method and system | Shinya Yamamoto | 2003-07-01 |
| 6546212 | Image forming apparatus and unit detachably attachable to the same image forming apparatus and information displaying system related to unit detachably attachable to the same image forming apparatus | Hiroshi Sasame, Shinya Yamamoto | 2003-04-08 |