Inventor
LIU DEFU
CN20 patents
⚠️ This page may combine multiple inventors who share the name “LIU DEFU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LINHAI GUOKANG LEISURE PRODUCTS CO LTD
8 patentsUSD1061007SFeb 11, 2025
Umbrella skeleton
LINHAI GUOKANG LEISURE PRODUCTS CO LTD2 citations73
USD1061008SFeb 11, 2025
Sunshade armrest shell
LINHAI GUOKANG LEISURE PRODUCTS CO LTD5 citations73
US11412821B2Aug 16, 2022
Straight-pole sun umbrella hand-cranking structure
LINHAI GUOKANG LEISURE PRODUCTS CO LTD2 citations71
US11317688B2May 3, 2022
Straight-pole sun umbrella hand-cranking device
LINHAI GUOKANG LEISURE PRODUCTS CO LTD2 citations71
USD1111765SFeb 10, 2026
Locking device
LINHAI GUOKANG LEISURE PRODUCTS CO LTD0 citations61
USD1085691SJul 29, 2025
Sunshade umbrella pole
LINHAI GUOKANG LEISURE PRODUCTS CO LTD0 citations61
USD1111398SFeb 10, 2026
Umbrella handle
LINHAI GUOKANG LEISURE PRODUCTS CO LTD0 citations56
US12538966B2Feb 3, 2026
Sun umbrella locking device
LINHAI GUOKANG LEISURE PRODUCTS CO LTD0 citations50
UBTECH ROBOTICS CORP
5 patentsUS10888993B2Jan 12, 2021
Assembly for driving waist of robot and robot having the same
UBTECH ROBOTICS CORP0 citations61
US10836032B2Nov 17, 2020
Robot and leg assembly thereof
UBTECH ROBOTICS CORP1 citations61
US10773395B2Sep 15, 2020
Robot and arm assembly thereof
UBTECH ROBOTICS CORP1 citations61
US10774908B2Sep 15, 2020
Robot and head thereof
UBTECH ROBOTICS CORP1 citations61
US10927931B2Feb 23, 2021
Robot and arm assembly thereof
UBTECH ROBOTICS CORP0 citations50