| PATENT ASSIGNEE'S COUNTRY | Germany; Japan |
| UPDATE | 11.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Copolymer with K value 50-100 & based on - Vinylpyrrolidone & - Vinylimidazole (5-90 mol %) |
| PATENT PHOTOCOPY | Available on request |
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