Inventor
LU ZHIGANG
CN14 patents
⚠️ This page may combine multiple inventors who share the name “LU ZHIGANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHANGHAI VISION MECH JOINT CO LTD
8 patentsUS10711929B1Jul 14, 2020
Pipe element coupler and coupling method thereof
SHANGHAI VISION MECH JOINT CO LTD18 citations91
US10851928B1Dec 1, 2020
Pipe element coupler and coupling method thereof
SHANGHAI VISION MECH JOINT CO LTD9 citations81
US11906085B1Feb 20, 2024
Quick-fitting pipe fitting
SHANGHAI VISION MECH JOINT CO LTD1 citations59
US11898675B2Feb 13, 2024
Pipe element coupler and coupling method thereof
SHANGHAI VISION MECH JOINT CO LTD0 citations59
US11781685B2Oct 10, 2023
Quick-fitting pipe fitting assembly
SHANGHAI VISION MECH JOINT CO LTD0 citations59
US11781686B2Oct 10, 2023
Quick-fitting pipe fitting assembly
SHANGHAI VISION MECH JOINT CO LTD0 citations59
USD1101906SNov 11, 2025
Quick-fitting pipe coupler
SHANGHAI VISION MECH JOINT CO LTD0 citations57
US12492764B2Dec 9, 2025
Quick coupler
SHANGHAI VISION MECH JOINT CO LTD0 citations48