GB2145422A — Novel poly-esters, their preparation and pharmacological use thereof
Assigned to Sandoz AG · Expires 1985-03-27 · 41y expired
What this patent protects
The invention provides a polyester of a polyol, said polyol containing at least 3 hydroxyl groups and having a molecular weight of up to 20,000 at least 1 hydroxyl group in said polyol being in the form of an ester, with a poly-or copoly-lactic acid residue, each having a molecul…
USPTO Abstract
The invention provides a polyester of a polyol, said polyol containing at least 3 hydroxyl groups and having a molecular weight of up to 20,000 at least 1 hydroxyl group in said polyol being in the form of an ester, with a poly-or copoly-lactic acid residue, each having a molecular weight of at least 5,000. The polyester is useful for parenteral depot formulations containing a pharmacologically active agent such as bromocriptine, ketotifen or co-dergocrine.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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