Inventor

YAN YONGFU

CN3 patents

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

HUAWEI TECH CO LTD

2 patents

US7940909B2May 10, 2011

Method and system for rewarding ring back tone, donor platform, and custom ring back tone platform

HUAWEI TECH CO LTD6 citations53

US8355756B2Jan 15, 2013

Service processing method, communication system and relevant devices

HUAWEI TECH CO LTD0 citations36

YAN YONGFU

1 patent

US8442211B2May 14, 2013

Method and system for providing a ring back tone in a communication network

YAN YONGFU0 citations25