Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Methods and apparatus for providing emergency telephone service to IP-based telephone users

Methods and apparatus for providing emergency telephone service to IP-based telephone users

US Patent 8411672 · Granted Apr 2, 2013

Estimated economic value: $73,496,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Disposable prophylaxis angle with improved gear retainer2015
Congestion and thru-put visibility and isolation2014
Security extensions using at least a portion of layer 2 information or bits in t2014
IP based security applications using location, port and/or device identifier inf2013
Methods, apparatus and data structures for segmenting customers using at least a2012
Methods, apparatus and data structures for preserving address and service level 2012
Security extensions using at least a portion of layer 2 information or bits in t2011
IP based security applications using location, port and/or device identifier inf2011
Methods and apparatus for determining the port and/or physical location of an IP2010
Methods and apparatus for providing emergency telephone service to IP-based tele2010
Methods and apparatus for providing emergency telephone service to IP-based tele2010
Methods and apparatus for protecting against IP address assignments based on a f2010