CN Patent

CN103271886A — 一种吡非尼酮片剂及其制备方法

Assigned to Nanjing Chia Tai Tianqing Pharmaceutical Co Ltd · Expires 2013-09-04 · 13y expired

What this patent protects

本发明公开了一种吡非尼酮片剂及其制备方法，该制剂由含药微粒与崩解剂和润滑剂混匀后压片而成，所述的含药微粒按如下方法制备而成：将吡非尼酮与羟丙基纤维素溶于乙醇，所得溶液加入液体石蜡中，减压干燥除去乙醇，析出的微粒经干燥得含药微粒。本发明制备的含药微粒不仅极大改善了药物流动性，减少了辅料的种类，更提高了片剂的溶出度。

USPTO Abstract

本发明公开了一种吡非尼酮片剂及其制备方法，该制剂由含药微粒与崩解剂和润滑剂混匀后压片而成，所述的含药微粒按如下方法制备而成：将吡非尼酮与羟丙基纤维素溶于乙醇，所得溶液加入液体石蜡中，减压干燥除去乙醇，析出的微粒经干燥得含药微粒。本发明制备的含药微粒不仅极大改善了药物流动性，减少了辅料的种类，更提高了片剂的溶出度。

Drugs covered by this patent

Patent Metadata

Patent number: CN103271886A
Jurisdiction: CN
Classification: —
Expires: 2013-09-04
Drug substance claim: No
Drug product claim: No
Assignee: Nanjing Chia Tai Tianqing Pharmaceutical Co Ltd
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.

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