David E. Phelps
21Patents
6h-index
22Co-inventors
65Inventor score
Filing activity: May 7, 1998 → Jun 5, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6389126B1 | Service provisioning system for interactive voice response services | Electricity | 75 | Expired |
| US6493353B2 | Communications signaling gateway and system for an advanced service node | Electricity | 53 | Expired |
| US6647111B1 | System for executing advanced interactive voice response services using service-independent building blocks | Electricity | 41 | Expired |
| US8861692B1 | Web call access and egress to private network | Electricity | 36 | Active |
| US6418205B2 | Call and circuit state machine for a transaction control layer of a communications signaling gateway | Electricity | 16 | Expired |
| US9916128B2 | Visual and voice co-browsing framework | Electricity | 7 | Active |
| US9112976B2 | Parking and routing network calls and sessions | Electricity | 6 | Active |
| US10055742B2 | Call transfers for web-delivered calls | Physics | 5 | Active |
| US9712674B2 | Third-party call control over secure duplex communication channel | Electricity | 4 | Active |
| US8139729B2 | Systems and methods for handling calls associated with an interactive voice response application | Electricity | 4 | Active |
| US9247060B2 | Call control for web calls | Electricity | 3 | Active |
| US8315363B2 | Network call recording | Electricity | 3 | Active |
| US8908840B2 | IVR recording continuity control | Electricity | 3 | Active |
| US8750467B2 | Systems and methods for handling calls associated with an interactive voice response application | Electricity | 2 | Active |
| US7623644B2 | System for executing advanced interactive voice response services using service-independent building blocks | Electricity | 2 | Active |
| US8310958B2 | Routing calls in a network | Electricity | 1 | Active |
| US8619957B2 | Delivery of call data in a communication system | Electricity | 1 | Active |
| US8774395B2 | IVR recording management and control | Electricity | 0 | Active |
| US8971514B2 | Avoiding failed routes | Electricity | 0 | Active |
| US9276969B2 | Method and system for providing a setup timer in a SIP-based network | Electricity | 0 | Active |
| US8787537B2 | IVR communication session routing and recording | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.