Inventor
LIU HUITAO
US20 patents
⚠️ This page may combine multiple inventors who share the name “LIU HUITAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AT & T IP I LP
9 patentsUS7953443B2May 31, 2011
Apparatus and method of securing private content stored in a memory
AT & T IP I LP3 citations73
US9237230B2Jan 12, 2016
Distinctive ring tones prompted by call urgency and context
AT & T IP I LP1 citations62
US9912807B2Mar 6, 2018
Communication device prompt selection
AT & T IP I LP0 citations52
US9578168B2Feb 21, 2017
Distinctive ring tones prompted by call urgency and context
AT & T IP I LP0 citations52
US8565680B2Oct 22, 2013
Method and apparatus for provisioning a device
AT & T IP I LP0 citations52
US8892166B2Nov 18, 2014
Apparatus and method of securing private content stored in a memory
AT & T IP I LP0 citations51
US8600440B2Dec 3, 2013
Apparatus and method of securing private content stored in a memory
AT & T IP I LP0 citations51
US7593379B2Sep 22, 2009
Method and system to provide service availability to multi-mode terminals in different access networks
AT & T IP I LP0 citations51
US7912456B2Mar 22, 2011
Method and apparatus for improving voicemail notifications to multimode devices
AT & T IP I LP1 citations45
SBC KNOWLEDGE VENTURES LP
2 patentsUS7406334B2Jul 29, 2008
Systems and methods for securing personal or private content stored in the internal memory of a mobile terminal
SBC KNOWLEDGE VENTURES LP14 citations92
US7376112B2May 20, 2008
Method and system for seamless service availability for multi-mode terminals in different access networks
SBC KNOWLEDGE VENTURES LP24 citations92