TELIA COMPANY AB
162Patents
86Active
162Granted
50Portfolio score
Filing activity: Dec 28, 1993 → May 19, 2023
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5909436A | Random access orthogonal frequency division multiplex system and method | Electricity | 149 | Expired |
| US5564079A | Method for locating mobile stations in a digital telephone network | Physics | 146 | Expired |
| US5652772A | Method and apparatus for synchronization in digital transmisison systems of the OFDM type | Electricity | 138 | Expired |
| US5784363A | Arrangement in a multi-user system | Electricity | 119 | Expired |
| US5812523A | Method and device for synchronization at OFDM-system | Electricity | 109 | Expired |
| US5726973A | Method and arrangement for synchronization in OFDM modulation | Electricity | 95 | Expired |
| US5680388A | Method and arrangement for dynamic allocation of multiple carrier-wave channels for multiple access by frequency division of multiplexing | Electricity | 94 | Expired |
| US6687731B1 | Arrangement for load sharing in computer networks | Electricity | 93 | Expired |
| US5752227A | Method and arrangement for speech to text conversion | Physics | 80 | Expired |
| US5561839A | Method and arrangement in mobile telecommunications networks to provide for improved cell planning | Electricity | 79 | Expired |
| US6181714A | Multi-carrier transmission systems | Electricity | 79 | Expired |
| US6188873A | Broadband radio access method, device and system | Electricity | 79 | Expired |
| US6084871A | Method for synchronization of transmitter and receiver at mobile radio system | Electricity | 75 | Expired |
| US5826234A | Device and method for dubbing an audio-visual presentation which generates synthesized speech and corresponding facial movements | Physics | 64 | Expired |
| US5983104A | Mobile communications system with mobile unit speed identification features | Electricity | 61 | Expired |
| US5873033A | Method and arrangement for transfer between a cordless telecommunication system and a cellular mobile telecommunication system | Electricity | 49 | Expired |
| US5546500A | Arrangement for increasing the comprehension of speech when translating speech from a first language to a second language | Physics | 47 | Expired |
| US5664050A | Process for evaluating speech quality in speech synthesis | Physics | 47 | Expired |
| US6047177A | Method, device, and system for radio communication at short distances | Electricity | 46 | Expired |
| US6368205B1 | Voice mailbox in a GSM-system | Electricity | 43 | Expired |
| US6831918B1 | IP/ATM network system adapted for the simultaneous transmission of IP data packets to a plurality of users | Electricity | 38 | Expired |
| US6859653B1 | Efficient location management strategies in a UMTS-based network | Electricity | 35 | Expired |
| US6912400B1 | Procedure to transmit information at telephone answering service | Electricity | 35 | Expired |
| US5892763A | Arrangement for supplying local network emulation service over public connectionless ATM-network | Electricity | 32 | Expired |
| US6498788B1 | Method and a radio terminal for interaction with a service provider | Electricity | 30 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.