Inventor
Yuan Li
Inventor
Yantai, CN
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds50%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry25%
Y02PClimate change mitigation technologies in the production or processing of goods13%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds6%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%
PatentTitleYear
10,814,314Catalyst for aminating polyether polyol and preparation method thereof and method of preparing polyetheramines using catalyst thereof202010,369,559Composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst20199,926,259'Catalyst for fixed bed aniline rectification residue recycling and preparation method'20189,845,281Method for preparing hydroxyethyl (meth) acrylate20179,701,624'Method for preparing biuret polyisocyanate'20179,624,162'Method for preparing 3-aminomethyl-3,5,5-trimethyl cyclohexylamine'20179,580,380'Method for preparing diamino-dicyclohexyl methane'20178,829,245'3-aminomethyl-3, 5, 5-trimethyl cyclohexylamine preparation method'2014Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2014–2020Patents assigned to WANHUA CHEMICAL GROUP CO LTD (8)· patent assignee history
2014–2019Patents assigned to WANHUA CHEMICAL NINGBO CO LTD (2)· patent assignee history
2014Patents assigned to CHEN CHANGSHENG (1)· patent assignee history
2014Patents assigned to CUI HONGYIN (1)· patent assignee history
2014–2020Based in Yantai, CN· patent location history
2017Patents assigned to WANHUA CHEMICAL (NINGBO) CO LTD (2)· patent assignee history
2017–2018Based in Shandong, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WANHUA CHEMICAL GROUP CO LTD | 8 | 2014–2020 |
| WANHUA CHEMICAL (NINGBO) CO LTD | 2 | 2017 |
| WANHUA CHEMICAL NINGBO CO LTD | 2 | 2014–2019 |
| CHEN CHANGSHENG | 1 | 2014 |
| CUI HONGYIN | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yantai, CN | 6 | 2014–2020 |
| Shandong, CN | 2 | 2017–2018 |