Details for Patent: 4,789,724
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Summary for Patent: 4,789,724
| Title: | Preparation of anhydride copolymers |
| Abstract: | A method for preparation of very pure anhydride copolymers with high yield. The anhydride copolymers, consisting of aromatic and aliphatic diacids are formed by melt condensation of individually prepared, pure, isolated prepolymers. The method of preparation is characterized by high yield, reproducibility, polymer purity and controlled composition, and is a short and convenient procedure. The polyanhydrides produced by the disclosed method are particularly well suited to biomedical applications requiring low levels of toxic or inflammatory contaminants and physical and mechanical properties which closely conform to manufacturing specifications. |
| Inventor(s): | Domb; Abraham J. (Brookline, MA), Langer; Robert S. (Somerville, MA) |
| Assignee: | Massachusetts Institute of Technology (Cambridge, MA) |
| Application Number: | 06/920,724 |
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Patent Claim Types: see list of patent claims | Process; Use; |
Drugs Protected by US Patent 4,789,724
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International Family Members for US Patent 4,789,724
| Country | Patent Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |
|---|---|---|---|---|---|
| Austria | 285432 | ⤷ Try a Trial | |||
| Canada | 1278141 | ⤷ Try a Trial | |||
| Germany | 266603 | ⤷ Try a Trial | |||
| Germany | 3752381 | ⤷ Try a Trial | |||
| European Patent Office | 0266603 | ⤷ Try a Trial | |||
| >Country | >Patent Number | >Estimated Expiration | >Supplementary Protection Certificate | >SPC Country | >SPC Expiration |
