Inventor
WOLTER DAVID
US19 patents
⚠️ This page may combine multiple inventors who share the name “WOLTER DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AT & T IP I LP
13 patentsUS7773584B2Aug 10, 2010
Method and apparatus for processing session initiation protocol messages associated with a voice over IP terminal
AT & T IP I LP11 citations83
US7657239B2Feb 2, 2010
Method for conserving energy in a multimode communication device
AT & T IP I LP8 citations83
US7469269B2Dec 23, 2008
Method for exchanging content between communication devices
AT & T IP I LP14 citations83
US9344987B2May 17, 2016
Methods and apparatus to provide extended voice over internet protocol (VoIP) services
AT & T IP I LP2 citations62
US8345624B2Jan 1, 2013
Methods and apparatus to provide extended voice over internet protocol (VoIP) services
AT & T IP I LP4 citations62
US8046491B2Oct 25, 2011
Method for exchanging content between communication devices
AT & T IP I LP2 citations62
US10127561B2Nov 13, 2018
Method for acquiring services on a multiplicity of devices
AT & T IP I LP1 citations61
US7920838B2Apr 5, 2011
Method for conserving energy in a multimode communication device
AT & T IP I LP3 citations61
US10582064B2Mar 3, 2020
Method and apparatus for delivering IP multimedia subsystem services
AT & T IP I LP0 citations52
US10375664B2Aug 6, 2019
Methods and apparatus to provide extended voice over internet protocol (VoIP) services
AT & T IP I LP0 citations52
US9955025B2Apr 24, 2018
Method and apparatus for delivering IP multimedia subsystem services
AT & T IP I LP0 citations52
US9565648B2Feb 7, 2017
Methods and apparatus to provide extended voice over internet protocol (VoIP) services
AT & T IP I LP0 citations52
US10497005B2Dec 3, 2019
Method for acquiring services on a multiplicity of devices
AT & T IP I LP0 citations50