Yu Yao

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Yantai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Catalyst for preparing chlorine gas by hydrogen chloride oxidation,...
- Patent number 11,000,837
- Issue date May 11, 2021
- Wanhua Chemical Group Co., Ltd.
- Hongke Zhang
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for replacement of phosgene synthesis column catalyst
- Patent number 10,046,289
- Issue date Aug 14, 2018
- WANHUA CHEMICAL GROUP CO., LTD
- Hongke Zhang
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Solvent refining method for isocyanate prepared by phosgene method...
- Patent number 9,840,462
- Issue date Dec 12, 2017
- Wanhua Chemical Group Co., Ltd.
- Hongke Zhang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Catalyst for preparing phosgene and method for preparing phosgene u...
- Patent number 9,399,582
- Issue date Jul 26, 2016
- Wanhua Chemical (Ningbo) Co., Ltd.
- Bin Chen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Hole-jetting type mixer-reactor
- Patent number 8,042,988
- Issue date Oct 25, 2011
- Ningbo Wanhua Polyurethanes Co. Ltd.
- Jiansheng Ding
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Catalyst For Preparing Chlorine Gas By Hydrogen Chloride Oxidation,...
- Publication number 20190291087
- Publication date Sep 26, 2019
- WANHUA CHEMICAL GROUP CO., LTD.
- Hongke Zhang
- C01 - INORGANIC CHEMISTRY
Information Patent Application
METHOD FOR REPLACEMENT OF PHOSGENE SYNTHESIS COLUMN CATALYST
- Publication number 20170348661
- Publication date Dec 7, 2017
- WANHUA CHEMICAL GROUP CO., LTD.
- Hongke ZHANG
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
SOLVENT REFINING METHOD FOR ISOCYANATE PREPARED BY PHOSGENE METHOD...
- Publication number 20170022152
- Publication date Jan 26, 2017
- WANHUA CHEMICAL GROUP CO., LTD.
- Hongke Zhang
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
CATALYST FOR PREPARING PHOSGENE AND METHOD FOR PREPARING PHOSGENE U...
- Publication number 20160137511
- Publication date May 19, 2016
- WANHUA CHEMICAL GROUP CO., LTD.
- Bin CHEN
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Hole-jetting type mixer-reactor
- Publication number 20080159065
- Publication date Jul 3, 2008
- Jiansheng Ding
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL