Inventor
Sang Haiming
CN5 patents
⚠️ This page may combine multiple inventors who share the name “Sang Haiming”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATRIXNETS TECH CO LTD
2 patentsUS12518289B2Jan 6, 2026
Ring code, coding method, method for identifying ring code, method for applying ring code, and seal and electronic file
MATRIXNETS TECH CO LTD0 citations51
US12437085B2Oct 7, 2025
Encrypted seal, and secondary encryption method for strip-shaped data
MATRIXNETS TECH CO LTD0 citations40
HAIMING UNITED ENERGY GROUP JUWANG TECH CO LTD
2 patentsUS11474758B2Oct 18, 2022
Intelligent seal with cloud computing-based anti-forgery capability, enables printing the seal with degree rotation which improving printing speed and efficiency
HAIMING UNITED ENERGY GROUP JUWANG TECH CO LTD0 citations42
US11390069B2Jul 19, 2022
Seal printer
HAIMING UNITED ENERGY GROUP JUWANG TECH CO LTD0 citations42