Walter Heutschi
11Patents
6h-index
8Co-inventors
55Inventor score
Filing activity: Nov 7, 1997 → May 23, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6741691B1 | Call-back method for telecommunications and devices adapted accordingly | Electricity | 91 | Expired |
| US6738622B1 | Roaming method and devices appropriate therefor | Electricity | 50 | Expired |
| US6968383B1 | Method for broadcasting addressed data to a plurality of users | Electricity | 24 | Expired |
| US6976171B1 | Identification card and identification procedure | Electricity | 11 | Expired |
| US7797243B2 | Method and system for content-based billing in IP networks | Electricity | 11 | Expired |
| US7706791B2 | Method for telecommunication, identification module and computerized service unit | Electricity | 6 | Expired |
| US7194432B1 | Billing process and system in a telecommunication network | Electricity | 5 | Expired |
| US8213900B2 | Switching system and corresponding method for unicast or multicast end-to-end data and/or multimedia stream transmissions between network nodes | Electricity | 4 | Active |
| US9226148B2 | Access method in a WLAN for an IP mobile telephone with authentication by means of an HLR | Electricity | 4 | Active |
| US7366290B2 | Billing process and system in a telecommunication network | Electricity | 3 | Expired |
| US8422990B2 | Switching system and corresponding method for unicast or multicast end-to-end data and/or multimedia stream transmissions between network nodes | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.