Mark A. Ratcliffe
40Patents
10h-index
33Co-inventors
75Inventor score
Filing activity: Jul 15, 1996 → Jul 8, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5983217A | Apparatus and method for querying replicated databases | Emerging Cross-Sectional Technologies | 144 | Expired |
| US7366782B2 | Systems and methods for termination of session initiation protocol | Electricity | 63 | Expired |
| US6377674B1 | Method for global title translation processing | Electricity | 41 | Expired |
| US6205557A | Redundant call processing | Electricity | 28 | Expired |
| US5864563A | Method for testing network | Electricity | 24 | Expired |
| US7826390B2 | Method and apparatus for providing a distributed subscriber load distribution | Electricity | 23 | Active |
| US5915013A | Method and system for achieving routing of signalling information | Electricity | 21 | Expired |
| US6101494A | Apparatus and method for querying replicated databases using segmentation directories | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6665730B1 | Method and apparatus for transaction routing in a connection-oriented packet network using a non-fault-tolerant directory server | Electricity | 12 | Expired |
| US8369313B2 | IMS and method of multiple S-CSCF operation in support of single PUID | Electricity | 12 | Active |
| US9674639B2 | Method and apparatus for virtualized network function chaining management | Electricity | 9 | Active |
| US7657015B1 | Method and apparatus for processing multiple services per call | Electricity | 5 | Expired |
| US10659427B1 | Call processing continuity within a cloud network | Electricity | 4 | Active |
| US10212035B2 | Message flow management for virtual networks | Electricity | 4 | Active |
| US6829338B2 | Network having space chattering control for maximizing call throughput during overload | Electricity | 4 | Expired |
| US8533340B2 | IP multimedia subsystem virtual call/session control functions | Electricity | 3 | Active |
| US8239554B2 | Systems and methods for termination of session initiation protocol | Electricity | 3 | Active |
| US8812700B2 | Method and apparatus for providing network based services to non-registering endpoints | Electricity | 2 | Active |
| US10511480B2 | Message flow management for virtual networks | Electricity | 2 | Active |
| US8339956B2 | Method and apparatus for providing a centralized subscriber load distribution | Electricity | 2 | Active |
| US10432736B2 | Method and apparatus for virtualized network function chaining management | Electricity | 2 | Active |
| US8792480B2 | IMS and method of multiple S-CSCF operation in support of single PUID | Electricity | 2 | Active |
| US8121274B2 | Method and apparatus for processing multiple services per call | Electricity | 2 | Active |
| US9872328B2 | Updating connectivity with a communication network and methods thereof | Electricity | 2 | Active |
| US9379914B2 | Method and system for implementing aggregate endpoints on IMS networks | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.