CN Patent

CN1215993A — 药物制剂

Assigned to Pfizer Research and Development Co NV SA · Expires 1999-05-05 · 27y expired

What this patent protects

本发明提供了口服给药的控释药物制剂,其主要由活性药物化合物、低分子量聚环氧乙烷、羟丙甲基纤维素、压片赋形剂和选择性的一种或多种肠溶聚合物组成。本发明制剂在体外胃肠道模型中恒速释放药物。

USPTO Abstract

本发明提供了口服给药的控释药物制剂,其主要由活性药物化合物、低分子量聚环氧乙烷、羟丙甲基纤维素、压片赋形剂和选择性的一种或多种肠溶聚合物组成。本发明制剂在体外胃肠道模型中恒速释放药物。

Drugs covered by this patent

oxycodone-hydrochloride (OXYCODONE HYDROCHLORIDE)

Patent Metadata

Patent number: CN1215993A
Jurisdiction: CN
Classification: —
Expires: 1999-05-05
Drug substance claim: No
Drug product claim: No
Assignee: Pfizer Research and Development Co NV SA
Source: FDA Orange Book + USPTO grounding via Google Patents

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.