CA2427991C — Cellulose particles for pharmaceuticals
Assigned to Asahi Kasei Corp · Expires 2008-01-22 · 18y expired
What this patent protects
Cellulosic particles for pharmaceutical preparation which comprise at least 10 wt.% crystal cellulose having an average degree of polymerization of 60 to 3 50 and have an apparent tap density of 0.60 to 0.95 g/mL, a degree of sphericit y of 0.7 or higher, a shape factor of 1.10 t…
USPTO Abstract
Cellulosic particles for pharmaceutical preparation which comprise at least 10 wt.% crystal cellulose having an average degree of polymerization of 60 to 3 50 and have an apparent tap density of 0.60 to 0.95 g/mL, a degree of sphericit y of 0.7 or higher, a shape factor of 1.10 to 1.50, and an average particle diameter of 10 to 400 .mu.m.
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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