Inventor
RATCLIFFE MARK A
US28 patents
⚠️ This page may combine multiple inventors who share the name “RATCLIFFE MARK A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AT & T CORP
12 patentsUS5983217ANov 9, 1999
Apparatus and method for querying replicated databases
AT & T CORP166 citations97
US7366782B2Apr 29, 2008
Systems and methods for termination of session initiation protocol
AT & T CORP65 citations95
US6377674B1Apr 23, 2002
Method for global title translation processing
AT & T CORP58 citations95
US6665730B1Dec 16, 2003
Method and apparatus for transaction routing in a connection-oriented packet network using a non-fault-tolerant directory server
AT & T CORP25 citations92
US5864563AJan 26, 1999
Method for testing network
AT & T CORP41 citations92
US6101494AAug 8, 2000
Apparatus and method for querying replicated databases using segmentation directories
AT & T CORP25 citations91
US5915013AJun 22, 1999
Method and system for achieving routing of signalling information
AT & T CORP26 citations91
US6205557B1Mar 20, 2001
Redundant call processing
AT & T CORP40 citations88
US7657015B1Feb 2, 2010
Method and apparatus for processing multiple services per call
AT & T CORP12 citations83
US6829338B2Dec 7, 2004
Network having space chattering control for maximizing call throughput during overload
AT & T CORP8 citations72
US7274780B1Sep 25, 2007
Network having space chattering control for maximizing call throughput during overload
AT & T CORP2 citations61
US6977995B1Dec 20, 2005
Network having space chattering control for maximizing call throughput during overload
AT & T CORP0 citations50
AT & T IP I LP
12 patentsUS9674639B2Jun 6, 2017
Method and apparatus for virtualized network function chaining management
AT & T IP I LP12 citations92
US10659427B1May 19, 2020
Call processing continuity within a cloud network
AT & T IP I LP8 citations84
US10432736B2Oct 1, 2019
Method and apparatus for virtualized network function chaining management
AT & T IP I LP4 citations84
US10511480B2Dec 17, 2019
Message flow management for virtual networks
AT & T IP I LP2 citations73
US10212035B2Feb 19, 2019
Message flow management for virtual networks
AT & T IP I LP4 citations73
US9930127B2Mar 27, 2018
Method and apparatus for virtualized network function chaining management
AT & T IP I LP2 citations73
US9872328B2Jan 16, 2018
Updating connectivity with a communication network and methods thereof
AT & T IP I LP2 citations73
US11637761B2Apr 25, 2023
Systems and methods to deploy cloud-native microservices for communication services on scale
AT & T IP I LP0 citations62
US11431587B2Aug 30, 2022
Systems and methods to deploy cloud-native microservices for communication services on scale
AT & T IP I LP0 citations62
US10887404B2Jan 5, 2021
Method and apparatus for virtualized network function chaining management
AT & T IP I LP0 citations62
US11003516B2May 11, 2021
Geographical redundancy and dynamic scaling for virtual network functions
AT & T IP I LP0 citations52
US9544940B2Jan 10, 2017
Updating connectivity with a communication network and methods thereof
AT & T IP I LP1 citations52