Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6096395 | Roll including foam body and method of producing the roll | Saburo Hayashi, Sumio Oinuma, Takafumi Yamamoto, Hiroyasu Kato | 2000-08-01 |
| 5604031 | Electrically conductive roll whose base layer is formed of ion-conductive elastic material | Takafumi Yamamoto, Sumio Oinuma, Saburou Hayashi, Hiroyasu Kato | 1997-02-18 |