Pierre M. Crespo
4Patents
4h-index
2Co-inventors
36Inventor score
Filing activity: Dec 21, 2001 → Oct 3, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7823681B2 | Breath alcohol ignition interlock device with biometric facial recognition with real-time verification of the user | Performing Operations; Transporting | 83 | Active |
| US6956484B2 | Substance testing devices with photo identification | Performing Operations; Transporting | 72 | Expired |
| US7400258B2 | Substance testing devices with photo identification | Performing Operations; Transporting | 22 | Active |
| US7543472B2 | Calibration arrangement for breath testing equipment | Physics | 20 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.