EP1238664A1 — Adhesive preparations
Assigned to Hisamitsu Pharmaceutical Co Inc · Expires 2002-09-11 · 24y expired
What this patent protects
This invention provides a patch with less skin stimulation, excellent in long time store stability and heat stability and having favorable tack during use. The patch comprising a styrene - isoprene - styrene block copolymer, polyisobutylene, tackifier, plasticizer and pharmaceuti…
USPTO Abstract
This invention provides a patch with less skin stimulation, excellent in long time store stability and heat stability and having favorable tack during use. The patch comprising a styrene - isoprene - styrene block copolymer, polyisobutylene, tackifier, plasticizer and pharmaceutically effective ingredient, in which two or more kinds of polyisobutylene of different average molecular weight are used in combination and the viscosity of the adhesive of the patch is between 1500 and 30,000 poise (at 60°C) and the tack of the patch is from 5 to 200 g/10 mm.
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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