Patent · US Active

Oral solid formulation of compound anti-tubercular drug and preparation method thereof

US9555003B2 · kind B2 · utility

0Cited by

1References

8Claims

0Family size

Assignee

Zhejiang Hisun Pharmaceutical Co., Ltd. · CN

Inventors

Maojian Gu · Shanghai, CN
Qilan Zheng · Shanghai, CN
Chao Xu · Hefei, CN
Ning Li · New Canaan, US
Guixian Chen · Fuyang, CN
Lan Zheng · Fuyang, CN
Min Wang · Hangzhou City, CN
Lintao Jiang · Fuyang, CN

Key dates

Filing date	Apr 10, 2012
Grant date	Jan 31, 2017
Priority date	—
Expiry date	Aug 13, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P31/06
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Provided is an oral solid preparation of a compound anti-tubercular drug, wherein the active ingredients are rifampicin, isoniazid, pyrazinamide and ethambutol hydrochloride. The compound oral solid preparation is a coated tablet with coated core or a coated three-layer tablet, wherein the two active ingredients rifampicin and isoniazid do not come to contact with each other directly. The compound oral solid preparation not only improves the stability of the compound preparation, but also improves the bioavailability of rifampicin.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.