Chengkai Zhang

WA Wonderland Switzerland Ag: 3 patents #72 of 150Top 50%

📍 Steinhausen, CH: #30 of 79 inventorsTop 40%

Overall (All Time): #1,336,730 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
12342946	Foldable mechanism and infant carrier thereof	—	2025-07-01
11805920	Foldable mechanism and infant carrier thereof	—	2023-11-07
11484129	Foldable mechanism and infant carrier thereof	—	2022-11-01