Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7283771 | Charging roller | Hirobumi Takahashi, Tomoya Kawakami, Hiroshi Abe | 2007-10-16 |
| 7209683 | Charging roller featuring specified ratio of storage elastic modulus and dynamic viscoelasticity values and process cartridge and electrophotographic apparatus featuring the same | Hiroshi Abe, Hirobumi Takahashi, Tomoya Kawakami | 2007-04-24 |
| 7171142 | Conductive roller, and process cartridge and electrophotographic apparatus which have conductive roller | Tomoya Kawakami, Hiroshi Abe, Hirobumi Takahashi | 2007-01-30 |