GB9406094D0 — Polymer microspheres and a method of production thereof
Assigned to NOTTINGHAM AND UNIVERSITY, University of · Expires 1994-05-18 · 32y expired
What this patent protects
PCT No. PCT/GB95/00686 Sec. 371 Date Mar. 4, 1997 Sec. 102(e) Date Mar. 4, 1997 PCT Filed Mar. 27, 1995 PCT Pub. No. WO95/26376 PCT Pub. Date Oct. 5, 1996The invention relates to microspheres which are suitable for biomedical uses which have a diameter in the range of 10 nm to 2 …
USPTO Abstract
PCT No. PCT/GB95/00686 Sec. 371 Date Mar. 4, 1997 Sec. 102(e) Date Mar. 4, 1997 PCT Filed Mar. 27, 1995 PCT Pub. No. WO95/26376 PCT Pub. Date Oct. 5, 1996The invention relates to microspheres which are suitable for biomedical uses which have a diameter in the range of 10 nm to 2 mm and which comprise a substantially spherical core particle of a non-water-soluble polymer and an outer surface layer consisting substantially of a water-soluble polymer. The water-soluble polymer is conjugated to polyethylene glycol and the non-water-soluble core particle is attached to the water-soluble polymer by the polyethylene glycol moiety. The microspheres are prepared by dissolving the non-water-soluble polymer in a suitable first solvent, dispersing the polymer solution in a solution of the PEG/water-soluble polymer conjugate and evaporating the first solvent to form microspheres in which the PEG anchors the water-soluble polymer to the core particle.
Drugs covered by this patent
- Lotemax (LOTEPREDNOL ETABONATE) · Bausch Health
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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