Inventor
ZHANG CONGYING
CN6 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG CONGYING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WANHUA CHEMICAL GROUP CO LTD
5 patentsUS10814314B2Oct 27, 2020
Catalyst for aminating polyether polyol and preparation method thereof and method of preparing polyetheramines using catalyst thereof
WANHUA CHEMICAL GROUP CO LTD4 citations70
US11045794B2Jun 29, 2021
Supported catalyst used for synthesizing polyether amine, and manufacturing method
WANHUA CHEMICAL GROUP CO LTD0 citations59
US11248085B2Feb 15, 2022
Epoxy resin material, preparation method therefor and application thereof
WANHUA CHEMICAL GROUP CO LTD0 citations53
US9580380B2Feb 28, 2017
Method for preparing diamino-dicyclohexyl methane
WANHUA CHEMICAL GROUP CO LTD1 citations50
US9926259B1Mar 27, 2018
Catalyst for fixed bed aniline rectification residue recycling and preparation method
WANHUA CHEMICAL GROUP CO LTD0 citations44