Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5609432 | Ballpoint pen containing an aqueous ink composition | Takeyuki Yamamoto, Yasuyuki Sugimoto, Itaru Wakagi, Shinichi Murakata | 1997-03-11 |
| 5594562 | Hand-writable polymer dispersed liquid crystal board set with high resistance layer adjacent conductive layer | Morio Sato, Yutaka Abe, Jun Takano, Hirokazu Ishii | 1997-01-14 |