Frank Riedijk
31Patents
8h-index
30Co-inventors
75Inventor score
Filing activity: Jun 22, 1990 → Dec 16, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7864992B2 | Fingerprint sensor element | Physics | 58 | Active |
| US9152841B1 | Capacitive fingerprint sensor with improved sensing element | Physics | 29 | Active |
| US5064296A | Integrated semiconductor circuit for thermal measurements | Physics | 24 | Expired |
| US5604918A | Two-line mixed analog/digital bus system and a master station and a slave station for use in such system | Electricity | 15 | Expired |
| US9600707B1 | Analog sampling system and method for noise supression | Physics | 14 | Active |
| US6778686B1 | Sensing device and a method relating thereto | Physics | 13 | Expired |
| US9589171B1 | Method and device for detecting if a finger is present and sensing a fingerprint pattern | Physics | 12 | Active |
| US9383876B2 | Fingerprint sensing system and method | Physics | 10 | Active |
| US9842245B1 | Fingerprint sensing system with liveness detection | Physics | 7 | Active |
| US9600705B2 | Capacitive fingerprint sensing device with current readout from sensing elements | Physics | 7 | Active |
| US9489559B2 | Electronic device with fingerprint sensing system and conducting housing | Physics | 6 | Active |
| US9684812B2 | Fingerprint sensing device with common mode suppression | Physics | 6 | Active |
| US9672401B2 | Fingerprint sensing system and method | Physics | 5 | Active |
| US9323975B2 | Fingerprint sensing system and method | Physics | 5 | Active |
| US9449212B2 | Capacitive fingerprint sensor with sensing elements comprising timing circuitry | Human Necessities | 5 | Active |
| US9864895B1 | Fingerprint sensing system with finger detect | Physics | 4 | Active |
| US9460576B2 | Capacitive fingerprint sensing device with demodulation circuitry in sensing element | Physics | 4 | Active |
| US11093090B2 | TFT-based fingerprint sensing system with corrected read-out | Physics | 3 | Active |
| US9922231B1 | Fingerprint sensing with voltage pattern configurations | Physics | 2 | Active |
| US9971926B2 | Fingerprint sensor with controllable resolution | Physics | 2 | Active |
| US12056307B2 | Fingerprint sensor with column read-out | Electricity | 0 | Active |
| US11216633B2 | Fingerprint sensing arrangement and a method for filtering a fingerprint pattern signal | Physics | 0 | Active |
| US11847854B2 | Optical fingerprint sensing system with common mode compensation | Physics | 0 | Active |
| US11538267B2 | Fingerprint sensor with differently sized sensing structures | Electricity | 0 | Active |
| US11935319B2 | Method and system for fingerprint sensor evaluation | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.