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Yantai, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Catalyst for fixed bed aniline rectification residue recycling and...
Patent number
9,926,259
Issue date
Mar 27, 2018
Wanhua Chemical Group Co., Ltd.
Hua Mei
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing 3-aminomethyl-3,5,5-trimethyl cyclohexylamine
Patent number
9,624,162
Issue date
Apr 18, 2017
Wanhua Chemical Group Co., Ltd.
Changsheng Chen
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for intermittently producing 4,4′-diaminodicyclohexylmethane...
Patent number
8,759,591
Issue date
Jun 24, 2014
Wanhua Chemical Group Co., Ltd.
Shuang Hu
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
CATALYST FOR FIXED BED ANILINE RECTIFICATION RESIDUE RECYCLING AND...
Publication number
20180065916
Publication date
Mar 8, 2018
WANHUA CHEMICAL GROUP CO., LTD.
Hua Mei
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
CATALYST USED FOR RESOURCE UTILIZATION OF A FIXED BED ANILINE DISTI...
Publication number
20160207876
Publication date
Jul 21, 2016
WANHUA CHEMICAL GROUP CO., LTD.
Hua Mei
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Method For Preparing 3-Aminomethyl-3,5,5-Trimethyl Cyclohexylamine
Publication number
20150315133
Publication date
Nov 5, 2015
WANHUA CHEMICAL GROUP CO., LTD.
Changsheng Chen
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Method for Intermittently Producing 4,4'-Diaminodicyclohexylmethane...
Publication number
20120323041
Publication date
Dec 20, 2012
NINGBO WANHUA POLYURETHANES CO., LTD.
Shuang Hu
C07 - ORGANIC CHEMISTRY