Inventor

TU ENYUAN

CN3 patents

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

SIRF TECHNOLOGY HOLDINGS INC

2 patents

US7477189B2Jan 13, 2009

Methods and systems for acquisition, reacquisiton and tracking of weak navigational signals

SIRF TECHNOLOGY HOLDINGS INC11 citations82

US7903028B2Mar 8, 2011

Ephemeris download from weak signals

SIRF TECHNOLOGY HOLDINGS INC3 citations60

WANG CHI-SHIN

1 patent

US8094758B2Jan 10, 2012

Ephemeris download from weak signals

WANG CHI-SHIN2 citations57