Inventor

CHENG RONG-FENG

CN2 patents

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

LI HAI-SHENG

1 patent

US8847884B2Sep 30, 2014

Electronic device and method for offering services according to user facial expressions

LI HAI-SHENG3 citations48

CHENG RONG-FENG

1 patent

US8756679B2Jun 17, 2014

Electronic device and method for unlocking locked operating system

CHENG RONG-FENG0 citations35