Guohua Zhang

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Davie, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Diltiazem controlled release formulation and method of manufacture
- Patent number 8,778,395
- Issue date Jul 15, 2014
- Andrx Labs, LLC
- Xiu Xiu Cheng
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Sustained release formulation containing three different types of p...
- Patent number 6,346,268
- Issue date Feb 12, 2002
- Duramed Pharmaceuticals, Inc.
- Guohua Zhang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Water insoluble polymer based sustained release formulation
- Patent number 6,251,430
- Issue date Jun 26, 2001
- Guohua Zhang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Sustained release formulation containing three different types of p...
- Patent number 6,083,532
- Issue date Jul 4, 2000
- Duramed Pharmaceuticals, Inc.
- Guohua Zhang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Sustained release formulation containing three different types of p...
- Patent number 5,695,781
- Issue date Dec 9, 1997
- Hallmark Pharmaceuticals, Inc.
- Guohua Zhang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process to manufacture micronized nifedipine granules for sustained...
- Patent number 5,543,099
- Issue date Aug 6, 1996
- Hallmark Pharmaceutical, Inc.
- Guohua Zhang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Directly compressible extended release alprazolam formulation
- Publication number 20070087055
- Publication date Apr 19, 2007
- David Jan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Diltiazem controlled release formulation and method of manufacture
- Publication number 20070036856
- Publication date Feb 15, 2007
- Xiu Xiu Cheng
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Rapidly disintegrating formulation
- Publication number 20050112196
- Publication date May 26, 2005
- Jianbo Xie
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE