Patents by Inventor Guixian Chen

Guixian Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Oral solid formulation of compound anti-tubercular drug and preparation method thereof
    Patent number: 9555003
    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.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: January 31, 2017
    Assignee: Zhejiang Hisun Pharmaceutical Co., Ltd.
    Inventors: Maojian Gu, Qilan Zheng, Chao Xu, Ning Li, Guixian Chen, Lan Zheng, Min Wang, Lintao Jiang
  • ORAL SOLID FORMULATION OF COMPOUND ANTI-TUBERCULAR DRUG AND PREPARATION METHOD THEREOF
    Publication number: 20140127294
    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 contact directly. The compound oral solid preparation not only improves the stability of the compound preparation, but also improves the bioavailability of rifampicin.
    Type: Application
    Filed: April 10, 2012
    Publication date: May 8, 2014
    Applicant: ZHEJIANG HISUN PHARMACEUTICAL CO., LTD.
    Inventors: Maojian Gu, Qilan Zheng, Chao Xu, Ning Li, Guixian Chen, Lan Zheng, Min Wang, Lintao Jiang