Yiqian Chen

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Pyridopyrimidine derivative, preparation method therefor and medica...
- Patent number 12,162,879
- Issue date Dec 10, 2024
- Jiangsu Hengrui Medicine Co., Ltd.
- Guobao Zhang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Salts of bicyclo-substituted pyrazolon azo derivatives, preparation...
- Patent number 9,120,762
- Issue date Sep 1, 2015
- Jiangsu Hengrui Medicine Co., Ltd.
- Peng Cho Tang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Salts of bicyclo-substituted pyrazolon azo derivatives, preparation...
- Patent number 8,642,637
- Issue date Feb 4, 2014
- Jiangsu Hengrui Medicine Co., Ltd.
- Peng Cho Tang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Bicyclo-substituted pyrazolon azo derivatives, preparation process...
- Patent number 8,367,710
- Issue date Feb 5, 2013
- Jiangsu Hengrui Medicine Co. Ltd.
- Peng Cho Tang
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PYRIDOPYRIMIDINE DERIVATIVE, PREPARATION METHOD THEREFOR AND MEDICA...
- Publication number 20210269439
- Publication date Sep 2, 2021
- JIANGSU HENGRUI MEDICINE CO., LTD.
- Guobao Zhang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
SALTS OF BICYCLO-SUBSTITUTED PYRAZOLON AZO DERIVATIVES, PREPARATION...
- Publication number 20140140953
- Publication date May 22, 2014
- SHANGHAI HENGRUI PHARMACEUTICAL CO., LTD.
- Peng Cho Tang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
BICYCLO-SUBSTITUTED PYRAZOLON AZO DERIVATIVES, PREPARATION PROCESS...
- Publication number 20130123507
- Publication date May 16, 2013
- SHANGHAI HENGRUI PHARMACEUTICAL CO. LTD.
- Peng Cho Tang
- C07 - ORGANIC CHEMISTRY
Information Patent Application
SALTS OF BICYCLO-SUBSTITUTED PYRAZOLON AZO DERIVATIVES, PREPARATION...
- Publication number 20120164102
- Publication date Jun 28, 2012
- Peng Cho Tang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
BICYCLO-SUBSTITUTED PYRAZOLON AZO DERIVATIVES, PREPARATION PROCESS...
- Publication number 20100316601
- Publication date Dec 16, 2010
- Peng Cho Tang
- C07 - ORGANIC CHEMISTRY