VTECH TELECOMMUNICATIONS LIMITED
91Patents
49Active
91Granted
60Portfolio score
Filing activity: Oct 29, 1999 → Dec 11, 2023 · 28 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7738917B2 | Intercom/wireless door bell for multi-handset telephone system | Electricity | 269 | Active |
| US6236326A | Method and apparatus for intelligently signaling a battery charge condition in a wireless telephone | Emerging Cross-Sectional Technologies | 189 | Expired |
| US7062291B2 | Wireless multi-handset telephone system with integrated video monitoring accessories | Electricity | 189 | Expired |
| US7624357B2 | Mobile telephone with improved man machine interface | Electricity | 71 | Active |
| US6940966B2 | Method and apparatus for detection of a telephone CPE alerting signal | Electricity | 61 | Expired |
| US7801573B2 | Magnetic holder for rechargeable devices | Electricity | 53 | Active |
| US7327981B2 | Systems and methods for using landline telephone systems to exchange information with various electronic devices | Electricity | 40 | Expired |
| US6937228B2 | Two-axis ball-based cursor control apparatus with tactile feedback | Physics | 37 | Expired |
| US6850196B2 | Integrated inverted F antenna and shield can | Electricity | 35 | Expired |
| USD571775S1 | Telephone | General | 29 | Expired |
| USD571777S1 | Telephone base | General | 25 | Expired |
| US6987992B2 | Multiple wireless microphone speakerphone system and method | Electricity | 22 | Expired |
| US6950652B2 | Remote management of an external phonebook | Electricity | 22 | Expired |
| US6687239B1 | Method for dynamic channel allocation in a frequency hopping radio system | Electricity | 21 | Expired |
| USD607432S1 | Telephone handset | General | 16 | Expired |
| US7363045B2 | Systems and methods for exchanging data and audio between cellular telephones and landline telephones | Electricity | 16 | Expired |
| US7386319B2 | System and method for two-way messaging between a personal computer and a cordless device including stereo | Electricity | 16 | Expired |
| US7133686B2 | System and method for identifying interferes in a communication spectrum | Electricity | 14 | Expired |
| US7339608B2 | Wireless motion sensor using infrared illuminator and camera integrated with wireless telephone | Physics | 14 | Expired |
| US7366128B2 | System and method for avoiding interference between two communications systems | Electricity | 12 | Expired |
| US7693516B2 | Method and system for enhanced communications between a wireless terminal and access point | Electricity | 10 | Active |
| US7634231B2 | System and method for enhanced interoperability between a plurality of communication devices | Electricity | 9 | Expired |
| US7474744B2 | System and method for providing a local time of far end on telephone systems | Electricity | 9 | Active |
| US7577180B2 | Method and system for maintaining synchronization in low-power mode over a frequency hopping radio link | Emerging Cross-Sectional Technologies | 8 | Active |
| US7924765B2 | Method and system for improved wireless communications payload | Electricity | 8 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.