GB2170104A — Coated pharmaceutical dosage forms
Assigned to Warner Lambert Co LLC · Expires 1986-07-30 · 40y expired
What this patent protects
Coated pharmaceutical dosage forms comprises (1) a drug-containing substrate coated with a sustained release formulation, e.g. ethyl cellulose and (2) product of step (1) coated with a water-soluble overcoat, e.g. hydroxypropylmethycellulose or hydroxypropylcellulose. Substan…
USPTO Abstract
Coated pharmaceutical dosage forms comprises (1) a drug-containing substrate coated with a sustained release formulation, e.g. ethyl cellulose and (2) product of step (1) coated with a water-soluble overcoat, e.g. hydroxypropylmethycellulose or hydroxypropylcellulose. Substantial reductions in tackiness problems and curing times result when dosage forms are coated in this way.
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.
Track this patent
Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.