Beijing Watch Data System Co., Ltd.
9Patents
9Active
9Granted
47Portfolio score
Filing activity: Jun 7, 2006 → Aug 19, 2011 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8589216B2 | Intelligent charging system and method for use in a parking lot | Physics | 28 | Active |
| US7742009B2 | Antenna for the plug-in dual-interface smart card | Electricity | 4 | Active |
| US8266619B2 | Embedded operating system architecture for smart card | Physics | 4 | Active |
| US8255706B2 | Dual usage smart card of CPU and logical encryption and its data synchronization method | Physics | 3 | Active |
| US7999697B2 | WLAN-based no-stop electronic toll collection system and the implementation thereof | Physics | 2 | Active |
| US8627100B2 | Separate type mass data encryption/decryption apparatus and implementing method therefor | Electricity | 0 | Active |
| US7734707B2 | Don't disturb service management system and implementation thereof | Electricity | 0 | Active |
| US8594570B2 | Telecommunication intelligent card and method for signaling interaction with external non-contact card | Physics | 0 | Active |
| US8496174B2 | Smart card operating system and method | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.