| PATENT ASSIGNEE'S COUNTRY | Japan |
| UPDATE | 08.99 |
| PATENT ASSIGNEE | Mitsubishi Pencil KK (Tokyo) |
| PATENT CLAIMS |
Ink comprising organic solvent, colorant, resin & silica - Having primary av. particle diam. 7-40 nm & specific surface area (BET method) 50-380 square.m/g |
| PATENT PHOTOCOPY | Available on request |
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