Inventor

QIAN HAN

CN4 patents

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

BEIJING VOLCANO ENGINE TECHNOLOGY CO LTD

2 patents

US12511061B2Dec 30, 2025

Data storage method and apparatus, electronic device, and storage medium

BEIJING VOLCANO ENGINE TECHNOLOGY CO LTD0 citations48

US12498901B2Dec 16, 2025

Data processing method, apparatus, electronic device, and storage medium

BEIJING VOLCANO ENGINE TECHNOLOGY CO LTD0 citations48

CAO JUNWEI

1 patent

US9185005B2Nov 10, 2015

Quality-of-experience measurement for voice services

CAO JUNWEI2 citations58

EMPIRE TECHNOLOGY DEV LLC

1 patent

US9407680B2Aug 2, 2016

Quality-of-experience measurement for voice services

EMPIRE TECHNOLOGY DEV LLC0 citations48