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last 30 patents
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Patent Grant
Method for preparing reactive sealant resin
Patent number
12,122,876
Issue date
Oct 22, 2024
Wanhua Chemical Group Co., Ltd.
Changxun Ju
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Preparation method for polyurethane optical resin and applications...
Patent number
12,024,582
Issue date
Jul 2, 2024
WANHUA CHEMICAL GROUP CO., LTD.
Jianfeng Li
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for preparing isocyanate in gaseous phase
Patent number
11,814,339
Issue date
Nov 14, 2023
WANHUA CHEMICAL GROUP CO., LTD
Weiqi Hua
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Olefin epoxidation catalyst, preparation method therefor, and appli...
Patent number
11,511,260
Issue date
Nov 29, 2022
Wanhua Chemical Group Co., Ltd.
Tongji Wang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Preparation method for propylene epoxidation catalyst, and applicat...
Patent number
11,291,985
Issue date
Apr 5, 2022
Wanhua Chemical Group Co., Ltd.
Lei Wang
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Preparation method for olefin epoxidation catalyst and applications...
Patent number
11,213,811
Issue date
Jan 4, 2022
WANHUA CHEMICAL GROUP CO., LTD
Lei Wang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Catalyst for preparing α-phenylethanol by hydrogenation of acetophe...
Patent number
11,167,280
Issue date
Nov 9, 2021
Wanhua Chemical Group Co., Ltd.
Zuojin Li
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Isocyanate polymerization catalyst, preparation method thereof, and...
Patent number
11,111,332
Issue date
Sep 7, 2021
Wanhua Chemical Group Co., Ltd.
Wei Liu
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Imine-type quaternary ammonium salt catalyst, preparation method th...
Patent number
11,059,772
Issue date
Jul 13, 2021
Wanhua Chemical Group Co., Ltd.
Nuancheng Wang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Catalyst for catalytic oxidation treatment of organic wastewater, p...
Patent number
11,059,033
Issue date
Jul 13, 2021
Wanhua Chemical Group Co., Ltd.
Bo Zhou
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Supported catalyst used for synthesizing polyether amine, and manuf...
Patent number
11,045,794
Issue date
Jun 29, 2021
Wanhua Chemical Group Co., Ltd.
Shujie Ren
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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
Catalyst for preparing 1,5-pentanediol via hydrogenolysis of tetrah...
Patent number
10,974,233
Issue date
Apr 13, 2021
Wanhua Chemical Group Co., Ltd.
Jianglin Hu
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Silicalite-1 molecular sieve-based catalyst and preparation method...
Patent number
10,898,883
Issue date
Jan 26, 2021
WANHUA CHEMICAL GROUP CO., LTD
Jianglin Hu
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Emulsifiable isocyanate composition and preparation method and use...
Patent number
10,787,593
Issue date
Sep 29, 2020
WANHUA CHEMICAL GROUP CO., LTD
Wangshun Qi
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Method for treating reverse osmosis concentrated water
Patent number
10,696,574
Issue date
Jun 30, 2020
Wanhua Chemical Group Co., Ltd.
Hongke Zhang
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Heater, use thereof and method for preparing isocyanate using heater
Patent number
10,645,756
Issue date
May 5, 2020
Wanhua Chemical Group Co., Ltd.
Yong Yu
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Catalyst for preparing chlorine by oxidation of hydrogen chloride a...
Patent number
10,576,465
Issue date
Mar 3, 2020
Wanhua Chemical Group Co., Ltd.
Guangquan Yi
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Composite catalyst, preparation process thereof, and process for ca...
Patent number
10,369,559
Issue date
Aug 6, 2019
WANHUA CHEMICAL GROUP CO., LTD
Lei Qin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing catalyst used for preparing chlorine, catalyst...
Patent number
10,226,758
Issue date
Mar 12, 2019
Wanhua Chemical Group Co., Ltd.
Yinchuan Lou
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing hydroxyethyl (meth) acrylate
Patent number
9,845,281
Issue date
Dec 19, 2017
Wanhua Chemical Group Co., Ltd.
Junping Li
C07 - ORGANIC 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
Method for treating waste saline water produced in production proce...
Patent number
9,802,848
Issue date
Oct 31, 2017
Wanhua Chemical (Ningbo) Co., Ltd.
Hongke Zhang
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing biuret polyisocyanate
Patent number
9,701,624
Issue date
Jul 11, 2017
Wanhua Chemical Group Co., Ltd.
Bin Shi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing branched polycarbonate with continuous two-pha...
Patent number
9,683,078
Issue date
Jun 20, 2017
Wanhua Chemical Group Co., Ltd.
Lei Zhang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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 preparing diamino-dicyclohexyl methane
Patent number
9,580,380
Issue date
Feb 28, 2017
Wanhua Chemical Group Co., Ltd.
Xin Li
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
High-selectivity catalyst for production of high-quality gasoline f...
Patent number
9,168,515
Issue date
Oct 27, 2015
Wanhua Industrial Group Co., Ltd.
Ye Wang
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
High-speed mixing reactor and application thereof
Patent number
9,138,717
Issue date
Sep 22, 2015
WANHUA CHEMICAL GROUP CO., LTD
Jiansheng Ding
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
PREPARATION METHOD FOR POLYURETHANE OPTICAL RESIN AND APPLICATIONS...
Publication number
20220227915
Publication date
Jul 21, 2022
WANHUA CHEMICAL GROUP CO., LTD.
Jianfeng LI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PREPARING REACTIVE SEALANT RESIN
Publication number
20220056209
Publication date
Feb 24, 2022
WANHUA CHEMICAL GROUP CO., LTD.
Changxun Ju
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PREPARING ISOCYANATE IN GASEOUS PHASE
Publication number
20220024863
Publication date
Jan 27, 2022
WANHUA CHEMICAL GROUP CO., LTD.
Weiqi HUA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Olefin Epoxidation Catalyst, Preparation Method Therefor, And Appli...
Publication number
20210113990
Publication date
Apr 22, 2021
WANHUA CHEMICAL GROUP CO., LTD.
Tongji Wang
C07 - ORGANIC CHEMISTRY
Information
Patent Application
IMINE-TYPE QUATERNARY AMMONIUM SALT CATALYST, PREPARATION METHOD TH...
Publication number
20200377445
Publication date
Dec 3, 2020
WANHUA CHEMICAL GROUP CO., LTD.
Nuancheng Wang
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Catalyst For Preparing a-Phenylethanol By Hydrogenation Of Acetophe...
Publication number
20200282388
Publication date
Sep 10, 2020
WANHUA CHEMICAL GROUP CO., LTD.
Zuojin Li
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Preparation Method For Propylene Epoxidation Catalyst, And Applicat...
Publication number
20200269228
Publication date
Aug 27, 2020
WANHUA CHEMICAL GROUP CO., LTD.
Lei Wang
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
PREPARATION METHOD FOR OLEFIN EPOXIDATION CATALYST AND APPLICATIONS...
Publication number
20200147599
Publication date
May 14, 2020
WANHUA CHEMICAL GROUP CO., LTD.
Lei WANG
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
SILICALITE-1 MOLECULAR SIEVE-BASED CATALYST AND PREPARATION METHOD...
Publication number
20200139353
Publication date
May 7, 2020
WANHUA CHEMICAL GROUP CO., LTD.
Jianglin HU
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Isocyanate Polymerization Catalyst, Preparation Method Thereof, And...
Publication number
20200123300
Publication date
Apr 23, 2020
WANHUA CHEMICAL GROUP CO., LTD.
Wei Liu
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
CATALYST FOR PREPARING 1,5-PENTANEDIOL VIA HYDROGENOLYSIS OF TETRAH...
Publication number
20200009544
Publication date
Jan 9, 2020
WANHUA CHEMICAL GROUP CO., LTD.
Jianglin HU
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process of Producing Chlorine Gas
Publication number
20190337802
Publication date
Nov 7, 2019
WANHUA CHEMICAL GROUP CO., LTD.
Jiansheng Ding
C01 - INORGANIC CHEMISTRY
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 Treating Reverse Osmosis Concentrated Water
Publication number
20190202724
Publication date
Jul 4, 2019
WANHUA CHEMICAL GROUP CO., LTD.
Hongke Zhang
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Supported Catalyst Used For Synthesizing Polyether Amine, And Manuf...
Publication number
20190201878
Publication date
Jul 4, 2019
WANHUA CHEMICAL GROUP CO., LTD.
Shujie Ren
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Catalyst For Catalytic Oxidation Treatment Of Organic Wastewater, P...
Publication number
20190193059
Publication date
Jun 27, 2019
WANHUA CHEMICAL GROUP CO., LTD.
Bo Zhou
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Application
EMULSIFIABLE ISOCYANATE COMPOSITION AND PREPARATION METHOD AND USE...
Publication number
20180282593
Publication date
Oct 4, 2018
WANHUA CHEMICAL GROUP CO., LTD.
Wangshun QI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
CATALYST FOR PREPARING CHLORINE BY OXIDATION OF HYDROGEN CHLORIDE A...
Publication number
20170274361
Publication date
Sep 28, 2017
WANHUA CHEMICAL GROUP CO., LTD.
Guangquan Yi
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHOD FOR PREPARING HYDROXYETHYL (METH) ACRYLATE
Publication number
20170183288
Publication date
Jun 29, 2017
WANHUA CHEMICAL GROUP CO., LTD.
Junping Li
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Heater, Use Thereof And Method For Preparing Isocyanate Using Heater
Publication number
20170164424
Publication date
Jun 8, 2017
WANHUA CHEMICAL GROUP CO., LTD.
Yong Yu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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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
METHOD FOR PREPARING CATALYST USED FOR PREPARING CHLORINE, CATALYST...
Publication number
20170001178
Publication date
Jan 5, 2017
WANHUA CHEMICAL GROUP CO., LTD.
Yinchuan Lou
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Method For Preparing Biuret Polyisocyanate
Publication number
20160311765
Publication date
Oct 27, 2016
WANHUA CHEMICAL GROUP CO., LTD.
Bin Shi
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR PREPARING BRANCHED POLYCARBONATE WITH CONTINUOUS TWO-PHA...
Publication number
20160200864
Publication date
Jul 14, 2016
WANHUA CHEMICAL GROUP CO., LTD.
Lei Zhang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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
METHOD FOR PREPARING DIAMINO-DICYCLOHEXYL METHANE
Publication number
20160068472
Publication date
Mar 10, 2016
WANHUA CHEMICAL (NINGBO) CO., LTD.
Xin LI
C07 - ORGANIC CHEMISTRY
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
COMPOSITE CATALYST, PREPARATION PROCESS THEREOF, AND PROCESS FOR CA...
Publication number
20150231623
Publication date
Aug 20, 2015
WANHUA CHEMICAL GROUP CO., LTD.
Lei Qin
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Process of Producing Chlorine Gas by Catalytic Oxidation of Hydroge...
Publication number
20150037243
Publication date
Feb 5, 2015
WANHUA CHEMICAL (NINGBO) CO., LTD.
Jiansheng Ding
C01 - INORGANIC CHEMISTRY
Information
Patent Application
POLYCARBONATE PREPARATION METHOD
Publication number
20140350198
Publication date
Nov 27, 2014
WANHUA CHEMICAL GROUP CO., LTD.
Lei Zhang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...