Inventor

TIAN HONGCHANG

CN3 patents

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

RESEARCH IN MOTION LTD

2 patents

US7725125B2May 25, 2010

Audio management in a dual processor environment

RESEARCH IN MOTION LTD3 citations58

US7962171B2Jun 14, 2011

Audio management in a dual processor environment

RESEARCH IN MOTION LTD3 citations54

XIAN XD POWER SYS CO LTD

1 patent

US12305775B1May 20, 2025

Method and apparatus for controlling redundancy of valve control system of converter valve

XIAN XD POWER SYS CO LTD0 citations31