Inventor

WANG HEJIAN

CN2 patents

Patents

2 patents

US12277549B2Apr 15, 2025

Blockchain-based transaction system for green certificate

STATE GRID BLOCKCHAIN TECH BEIJING CO LTD0 citations44

US12437306B2Oct 7, 2025

Blockchain-based green power certification method, apparatus, and system

STATE GRID BLOCKCHAIN TECH BEIJING CO LTD0 citations41