Inventor

PI WEI

CN2 patents

⚠️ This page may combine multiple inventors who share the name “PI WEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHENZHEN HONGZHUN TECH CO LTD

1 patent

USD931480SSep 21, 2021

Hand warmer

SHENZHEN HONGZHUN TECH CO LTD37 citations82

HANCHENG ZAOZHUANG IND CO LTD

1 patent

US11970945B2Apr 30, 2024

Hole protection system and method for coal seam slotting and fracturing combined drainage

HANCHENG ZAOZHUANG IND CO LTD0 citations33