Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679491 | Toner used for developing an electrostatic charge image | Tomomi Oshiba, Hatsumi Yamada, Yuji Marukawa | 1997-10-21 |
| 5637431 | Developer for electrophotography | Tomomi Oshiba, Yuji Marukawa | 1997-06-10 |