| PATENT ASSIGNEE'S COUNTRY | Germany |
| UPDATE | 08.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
- Mixing polymeric PBI powder & an acid soln Whereby the polymeric PBI powder dissolves in the acid & forms a paste or gel matrix having 70-99.9% by wt of acid at room T |
| PATENT PHOTOCOPY | Availailable on request |
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