CN Patent

CN104546732A — 一种右旋布洛芬缓释片及其制备工艺

Assigned to Beijing Hanmi Pharmaceutical Co Ltd · Expires 2015-04-29 · 11y expired

What this patent protects

本发明公开了一种右旋布洛芬缓释片及其制备工艺。本发明右旋布洛芬缓释片的制备工艺以胶态二氧化硅作为抗粘剂，使用高速旋转压片机进行干法制粒，所得干法颗粒分别与特定的速释层辅料及缓释层辅料混合，压制双层片，得本发明右旋布洛芬缓释片。该制备工艺有效降低了长时间压片导致温度升高引起的粘冲现象，且工艺简单、效率较高；所得缓释片生物利用度高，稳定性好。

USPTO Abstract

本发明公开了一种右旋布洛芬缓释片及其制备工艺。本发明右旋布洛芬缓释片的制备工艺以胶态二氧化硅作为抗粘剂，使用高速旋转压片机进行干法制粒，所得干法颗粒分别与特定的速释层辅料及缓释层辅料混合，压制双层片，得本发明右旋布洛芬缓释片。该制备工艺有效降低了长时间压片导致温度升高引起的粘冲现象，且工艺简单、效率较高；所得缓释片生物利用度高，稳定性好。

Drugs covered by this patent

Patent Metadata

Patent number
CN104546732A
Jurisdiction
CN
Classification
—
Expires
2015-04-29
Drug substance claim
No
Drug product claim
No
Assignee
Beijing Hanmi 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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