Inventor
GUO ZHENGWEN
CH20 patents
⚠️ This page may combine multiple inventors who share the name “GUO ZHENGWEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WONDERLAND SWITZERLAND AG
14 patentsUS12128943B2Oct 29, 2024
Frame folding mechanism, frame locking mechanism, backrest unlocking mechanism and stroller
WONDERLAND SWITZERLAND AG2 citations71
US12208832B2Jan 28, 2025
Foldable backrest structure and child carrier therewith
WONDERLAND SWITZERLAND AG1 citations63
US12552199B2Feb 17, 2026
Wheel connecting structure and baby carrier
WONDERLAND SWITZERLAND AG0 citations62
US11958314B2Apr 16, 2024
Wheel connecting structure and baby carrier
WONDERLAND SWITZERLAND AG1 citations62
US12337733B2Jun 24, 2025
Child safety seat
WONDERLAND SWITZERLAND AG0 citations61
US12240356B2Mar 4, 2025
Tether assembly and child safety seat
WONDERLAND SWITZERLAND AG0 citations61
US12024218B2Jul 2, 2024
Baby carriage brake mechanism and baby carriage having the same
WONDERLAND SWITZERLAND AG0 citations61
US11981235B2May 14, 2024
Child safety seat
WONDERLAND SWITZERLAND AG1 citations61
US11643128B2May 9, 2023
Baby carriage brake mechanism and baby carriage having the same
WONDERLAND SWITZERLAND AG0 citations61
US12179645B2Dec 31, 2024
Tether assembly, and child safety seat and support structure thereof
WONDERLAND SWITZERLAND AG0 citations60
US11751668B2Sep 12, 2023
Baby hammock and baby crib
WONDERLAND SWITZERLAND AG0 citations58
US12570349B2Mar 10, 2026
Wheel set brake mechanism and baby transport
WONDERLAND SWITZERLAND AG0 citations51
US12589791B2Mar 31, 2026
Handrail mechanism and baby carriage including the same
WONDERLAND SWITZERLAND AG0 citations50
US12103580B2Oct 1, 2024
Folding handle, folding device, child stroller seat and child stroller
WONDERLAND SWITZERLAND AG0 citations50