Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7144525 | Elastic member of semiconductive polymer and OA equipment using the same | Hitoshi Yoshikawa, Satoshi Suzuki, Kunio Ito | 2006-12-05 |
| 6783701 | Electrically conductive foam component | Hitoshi Yoshikawa, Satoshi Suzuki, Kunio Ito | 2004-08-31 |
| 6149564 | Toner supply roll including porous cylindrical polyurethane sponge structure having skin layer having openings and alternate protrusions and recesses, and method of producing the same | Keita Shiraki | 2000-11-21 |
| 5768668 | Toner supply roll having openings in skin layer of porous cylindrical polyurethane sponge structure, and method of producing the same | Keita Shiraki, Saburou Hayashi, Mitsuyoshi Kondo | 1998-06-16 |