MITEL KNOWLEDGE CORPORATION
47Patents
0Active
47Granted
37Portfolio score
Filing activity: Jul 23, 1998 → Apr 26, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6411687B1 | Call routing based on the caller's mood | Electricity | 394 | Expired |
| US6460037B1 | Agent-based data mining and warehousing | Emerging Cross-Sectional Technologies | 105 | Expired |
| USD464052S1 | Mouse controller | General | 86 | Expired |
| USD474169S1 | Audio conferencing device | General | 81 | Expired |
| US6990193B2 | Method of acoustic echo cancellation in full-duplex hands free audio conferencing with spatial directivity | Electricity | 44 | Expired |
| US6363140B1 | Dialable screening profile | Electricity | 41 | Expired |
| US7292685B2 | Pro-active features for telephony | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6480122B1 | Power supply for ethernet LAN connected telephone | Electricity | 37 | Expired |
| US7030733B2 | Power supply for phantom-feed LAN connected device using spare-pair powering | Electricity | 31 | Expired |
| US7187765B2 | Method of capturing constant echo path information in a full duplex speakerphone using default coefficients | Electricity | 30 | Expired |
| US6785367B2 | Method and apparatus for extracting voiced telephone numbers and email addresses from voice mail messages | Electricity | 27 | Expired |
| US6643659B1 | Common data model including field interdependencies | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6625499B2 | Tabular range editing mechanism | Physics | 17 | Expired |
| US6801609B2 | Telephone system with programmable line appearances | Electricity | 16 | Expired |
| US6741717B2 | Device for reducing structural-acoustic coupling between the diaphragm vibration field and the enclosure acoustic modes | Electricity | 12 | Expired |
| US6816576B2 | Tree hierarchy and description for generated logs | Electricity | 11 | Expired |
| US6804126B2 | Power supply start up circuit | Electricity | 10 | Expired |
| US6819665B1 | Private branch exchange implemented using H.323 gatekeeper | Electricity | 10 | Expired |
| US7062005B2 | Master slave frame lock method | Electricity | 9 | Expired |
| US7024184B2 | Call redirection zones for wireless communications | Electricity | 9 | Expired |
| US7298708B2 | IP device registration | Electricity | 8 | Expired |
| US6642632B2 | Efficient battery transfer circuit | Electricity | 7 | Expired |
| USD472539S1 | Telephone | General | 7 | Expired |
| US6424545B1 | Efficient, dual-source, wide-input range, isolated DC-DC converter with effective current limit | Electricity | 6 | Expired |
| US6434236B1 | PC server telecommunications power system | Electricity | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.