Assignee
AT & T CORP
US4,306 patents
Top patents by PatentIndex Score
US7441043B1Oct 21, 2008
System and method to support networking functions for mobile hosts that access multiple networks
AT & T CORP183 citations99
US7400901B2Jul 15, 2008
WLAN having load balancing based on access point loading
AT & T CORP105 citations99
US7386443B1Jun 10, 2008
System and method for mobile automatic speech recognition
AT & T CORP112 citations99
US7343148B1Mar 11, 2008
Modification of portable communications device operation in vehicles
AT & T CORP126 citations99
US7295970B1Nov 13, 2007
Unsupervised speaker segmentation of multi-speaker speech data
AT & T CORP141 citations99
US7292651B2Nov 6, 2007
Pilot-aided channel estimation for OFDM in wireless systems
AT & T CORP145 citations99
US7289489B1Oct 30, 2007
Method for billing IP broadband subscribers
AT & T CORP345 citations99
US7280517B2Oct 9, 2007
Wireless LANs and neighborhood capture
AT & T CORP113 citations99
US7274662B1Sep 25, 2007
Method for performing segmented resource reservation
AT & T CORP128 citations99
US7272377B2Sep 18, 2007
System and method of ubiquitous language translation for wireless devices
AT & T CORP136 citations99
US7197460B1Mar 27, 2007
System for handling frequently asked questions in a natural language dialog service
AT & T CORP518 citations99
US7184428B1Feb 27, 2007
Facility management platform for a hybrid coaxial/twisted pair local loop network service architecture
AT & T CORP149 citations99
US7184959B2Feb 27, 2007
System and method for automated multimedia content indexing and retrieval
AT & T CORP118 citations99
US7180889B1Feb 20, 2007
Personal control of address assignment and greeting options for multiple BRG ports
AT & T CORP249 citations99
US7181207B1Feb 20, 2007
Method and apparatus for over-the-air activation of neighborhood cordless-type services
AT & T CORP199 citations99
US7180855B1Feb 20, 2007
Service interface for QoS-driven HPNA networks
AT & T CORP300 citations99
US7151762B1Dec 19, 2006
Virtual streams for QoS-driven wireless LANs
AT & T CORP131 citations99
US7145440B2Dec 5, 2006
Broadband coupler technique for electrical connection to power lines
AT & T CORP238 citations99
US7142563B1Nov 28, 2006
Service interface for QoS-driven HPNA networks
AT & T CORP102 citations99
US7136361B2Nov 14, 2006
Hybrid coordination function (HCF) access through tiered contention and overlapped wireless cell mitigation
AT & T CORP190 citations99
US7133380B1Nov 7, 2006
System and method for selecting a transmission channel in a wireless communication system that includes an adaptive array
AT & T CORP148 citations99
US7120139B1Oct 10, 2006
Broadband cable telephony network architecture IP ITN network architecture reference model
AT & T CORP360 citations99
US7117156B1Oct 3, 2006
Method and apparatus for performing packet loss or frame erasure concealment
AT & T CORP89 citations99
US7103347B2Sep 5, 2006
Automatic wireless service activation in a private local wireless system
AT & T CORP98 citations99
US7095754B2Aug 22, 2006
Tiered contention multiple access (TCMA): a method for priority-based shared channel access
AT & T CORP323 citations99
US7076430B1Jul 11, 2006
System and method of providing conversational visual prosody for talking heads
AT & T CORP88 citations99
US7068628B2Jun 27, 2006
MIMO OFDM system
AT & T CORP252 citations99
US7058367B1Jun 6, 2006
Rate-adaptive methods for communicating over multiple input/multiple output wireless systems
AT & T CORP194 citations99
US7039032B1May 2, 2006
Multipoll for QoS-Driven wireless LANs
AT & T CORP84 citations99
US7039040B1May 2, 2006
Voice-over-IP enabled chat
AT & T CORP246 citations99
US7035803B1Apr 25, 2006
Method for sending multi-media messages using customizable background images
AT & T CORP132 citations99
US7031287B1Apr 18, 2006
Centralized contention and reservation request for QoS-driven wireless LANs
AT & T CORP128 citations99
US7010002B2Mar 7, 2006
Broadband network with enterprise wireless communication method for residential and business environment
AT & T CORP222 citations99
US7002995B2Feb 21, 2006
Broadband network with enterprise wireless communication system for residential and business environment
AT & T CORP107 citations99
US6990452B1Jan 24, 2006
Method for sending multi-media messages using emoticons
AT & T CORP225 citations99
US6983312B1Jan 3, 2006
Method for using scheduled hyperlinks to record multimedia content
AT & T CORP91 citations99
US6980697B1Dec 27, 2005
Digitally-generated lighting for video conferencing applications
AT & T CORP75 citations99
US6976082B1Dec 13, 2005
System and method for receiving multi-media messages
AT & T CORP122 citations99
US6973333B1Dec 6, 2005
Modification of portable communications device operation in vehicles
AT & T CORP228 citations99
US6970422B1Nov 29, 2005
Admission control for QoS-Driven Wireless LANs
AT & T CORP151 citations99
US6963839B1Nov 8, 2005
System and method of controlling sound in a multi-media communication application
AT & T CORP176 citations99
US6961559B1Nov 1, 2005
Distributed network voice messaging for wireless centrex telephony
AT & T CORP325 citations99
US6940845B2Sep 6, 2005
Asymmetric measurement-based dynamic packet assignment system and method for wireless data services
AT & T CORP139 citations99
US6937595B2Aug 30, 2005
Multifunction interface facility connecting wideband multiple access subscriber loops with various networks
AT & T CORP243 citations99
US6937713B1Aug 30, 2005
IP call forward profile
AT & T CORP235 citations99
US6928485B1Aug 9, 2005
Method for network-aware clustering of clients in a network
AT & T CORP281 citations99
US6917610B1Jul 12, 2005
Activity log for improved call efficiency
AT & T CORP210 citations99
US6909745B1Jun 21, 2005
Content adaptive video encoder
AT & T CORP257 citations99
US6898569B1May 24, 2005
Method and apparatus for advanced scheduling and messaging system
AT & T CORP229 citations99
US6889321B1May 3, 2005
Protected IP telephony calls using encryption
AT & T CORP253 citations99
Showing the top 50 of 4,306 patents by PatentIndex Score.