Inventor
ZHU ZHICHENG
CN4 patents
⚠️ This page may combine multiple inventors who share the name “ZHU ZHICHENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WANHUA CHEMICAL GROUP CO LTD
2 patentsUS12304993B2May 20, 2025
Storage-stable polyisocyanate composition and preparation method
WANHUA CHEMICAL GROUP CO LTD0 citations58
US11059772B2Jul 13, 2021
Imine-type quaternary ammonium salt catalyst, preparation method thereof and use thereof for preparation of polyisocyanate composition
WANHUA CHEMICAL GROUP CO LTD0 citations56