GB9412273D0 — Administration means
Assigned to University of Nottingham · Expires 1994-08-10 · 32y expired
What this patent protects
PCT No. PCT/GB95/01426 Sec. 371 Date Apr. 4, 1997 Sec. 102(e) Date Apr. 4, 1997 PCT Filed Jun. 19, 1995 PCT Pub. No. WO95/35097 PCT Pub. Date Dec. 28, 1995Provided are biodegradable microparticles, which exhibit a linear release profile of active agent, and methods for making the…
USPTO Abstract
PCT No. PCT/GB95/01426 Sec. 371 Date Apr. 4, 1997 Sec. 102(e) Date Apr. 4, 1997 PCT Filed Jun. 19, 1995 PCT Pub. No. WO95/35097 PCT Pub. Date Dec. 28, 1995Provided are biodegradable microparticles, which exhibit a linear release profile of active agent, and methods for making the microparticles. The microparticles include a mixture of a biodegradable polymer, a water soluble polymer, and an active agent. Preferred biodegradable polymers include lactide homopolymers or copolymers of lactide and glycolide, and preferred water soluble polymers include poly(ethylene glycol) (PEG) or PEG copolymers. The microparticles are made using an emulsion/solvent extraction method, in which the continuous phase of the secondary emulsion contains an organic solvent that is miscible with the organic solvent in the primary emulsion.
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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