Inventor

CHANG ZHIHUA

CN3 patents

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

BEIJING DIDI INFINITY TECHNOLOGY & DEV CO LTD

2 patents

US10990500B2Apr 27, 2021

Systems and methods for user analysis

BEIJING DIDI INFINITY TECHNOLOGY & DEV CO LTD0 citations45

US10877968B2Dec 29, 2020

Systems and methods for data processing

BEIJING DIDI INFINITY TECHNOLOGY & DEV CO LTD0 citations34

BEIJING XIAOMI MOBILE SOFTWARE CO LTD

1 patent

US12373486B2Jul 29, 2025

Audio recognition method, electronic device and storage medium

BEIJING XIAOMI MOBILE SOFTWARE CO LTD0 citations38