Inventor
Weiqi Hua
Inventor
Yantai, CN
Overview
Patents· 28 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry23%
C07CAcyclic or carbocyclic compounds23%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds13%
C01BNon-metallic elements9%
C02FTreatment of water, waste water, sewage, or sludge4%
B01DSeparation3%
B01FMixing, e.g. dissolving, emulsifying or dispersing3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
B01BBoiling1%
C01DCompounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium1%
PatentTitleYear
11,111,332Isocyanate polymerization catalyst, preparation method thereof, and method for preparing polyisocyanate by using same202111,059,772Imine-type quaternary ammonium salt catalyst, preparation method thereof and use thereof for preparation of polyisocyanate composition202111,059,033Catalyst for catalytic oxidation treatment of organic wastewater, preparation method thereof, and application thereof202111,045,794Supported catalyst used for synthesizing polyether amine, and manufacturing method202111,000,837Catalyst for preparing chlorine gas by hydrogen chloride oxidation, and preparation method and application thereof202110,974,233Catalyst for preparing 1,5-pentanediol via hydrogenolysis of tetrahydrofurfuryl alcohol, method and application thereof202110,898,883Silicalite-1 molecular sieve-based catalyst and preparation method for 1,2-pentanediol using said catalyst202110,787,593Emulsifiable isocyanate composition and preparation method and use thereof202010,696,574Method for treating reverse osmosis concentrated water202010,645,756Heater, use thereof and method for preparing isocyanate using heater202010,576,465Catalyst for preparing chlorine by oxidation of hydrogen chloride and preparation thereof202010,369,559Composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst201910,226,758Method for preparing catalyst used for preparing chlorine, catalyst and method for preparing chlorine20199,845,281Method for preparing hydroxyethyl (meth) acrylate20179,840,462'Solvent refining method for isocyanate prepared by phosgene method and devices used in same'20179,802,848'Method for treating waste saline water produced in production process of diphenylmethane diisocyanate (MDI)'20179,701,624'Method for preparing biuret polyisocyanate'20179,683,078'Method for preparing branched polycarbonate with continuous two-phase interface phosgene method'20179,624,162'Method for preparing 3-aminomethyl-3,5,5-trimethyl cyclohexylamine'20179,580,380'Method for preparing diamino-dicyclohexyl methane'20179,399,582'Catalyst for preparing phosgene and method for preparing phosgene using the same'20169,168,515'High-selectivity catalyst for production of high-quality gasoline fractions from syngas and its preparation method'20159,138,717'High-speed mixing reactor and application thereof'20159,062,154'Polycarbonate preparation method'20158,829,245'3-aminomethyl-3, 5, 5-trimethyl cyclohexylamine preparation method'20148,759,591'Method for intermittently producing 4,4′-diaminodicyclohexylmethane with a low amount of the trans-trans isomer'20148,206,652'Jet reactor with flow ducts and process for preparing isocyanates using it'20127,893,301'Method of preparing polymethylene-polyphenyl-polyamine'2011Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2011–2021Based in Yantai, CN· patent location history
2012–2017Patents assigned to HUA WEIQI (6)· patent assignee history
2012–2017Patents assigned to DING JIANSHENG (4)· patent assignee history
2014–2021Patents assigned to WANHUA CHEMICAL GROUP CO LTD (24)· patent assignee history
2014–2019Patents assigned to WANHUA CHEMICAL NINGBO CO LTD (4)· patent assignee history
2015–2021Based in Shandong, CN· patent location history
2016–2017Patents assigned to WANHUA CHEMICAL (NINGBO) CO LTD (4)· patent assignee history
2017Based in Zhejiang, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WANHUA CHEMICAL GROUP CO LTD | 24 | 2014–2021 |
| HUA WEIQIself | 6 | 2012–2017 |
| DING JIANSHENG | 4 | 2012–2017 |
| WANHUA CHEMICAL (NINGBO) CO LTD | 4 | 2016–2017 |
| WANHUA CHEMICAL NINGBO CO LTD | 4 | 2014–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yantai, CN | 16 | 2011–2021 |
| Shandong, CN | 11 | 2015–2021 |
| Zhejiang, CN | 1 | 2017 |