Inventor
He chang-jun
CN16 patents
⚠️ This page may combine multiple inventors who share the name “He chang-jun”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POLYGROUP MACAU LTD BVI
14 patentsUS8863416B2Oct 21, 2014
Powered tree construction
POLYGROUP MACAU LTD BVI70 citations99
US9119495B2Sep 1, 2015
Powered tree construction
POLYGROUP MACAU LTD BVI44 citations98
US8959810B1Feb 24, 2015
Powered tree construction
POLYGROUP MACAU LTD BVI54 citations98
US9912109B2Mar 6, 2018
Powered tree construction
POLYGROUP MACAU LTD BVI14 citations92
US11967790B2Apr 23, 2024
Powered tree construction with rotation limiting
POLYGROUP MACAU LTD BVI2 citations84
US11799251B2Oct 24, 2023
Powered tree construction with rotation limiting
POLYGROUP MACAU LTD BVI2 citations84
US10985513B2Apr 20, 2021
Powered tree construction with rotation limiting
POLYGROUP MACAU LTD BVI3 citations84
US11095078B2Aug 17, 2021
Powered tree construction with rotation limiting
POLYGROUP MACAU LTD BVI2 citations73
US10842306B2Nov 24, 2020
Multi-wire quick assemble tree
POLYGROUP MACAU LTD BVI3 citations73
US10777949B2Sep 15, 2020
Powered tree construction
POLYGROUP MACAU LTD BVI1 citations73
US10522954B1Dec 31, 2019
Powered tree construction
POLYGROUP MACAU LTD BVI1 citations73
US10404019B2Sep 3, 2019
Powered tree construction
POLYGROUP MACAU LTD BVI1 citations73
US12362523B2Jul 15, 2025
Powered tree construction with rotation limiting
POLYGROUP MACAU LTD BVI0 citations62
US11602237B2Mar 14, 2023
Multi-wire quick assemble tree
POLYGROUP MACAU LTD BVI0 citations62