Fingermatrix, Inc.
16Patents
0Active
16Granted
32Portfolio score
Filing activity: Nov 25, 1977 → Aug 12, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4322163A | Finger identification | Physics | 202 | Expired |
| US4544267A | Finger identification | Human Necessities | 190 | Expired |
| US4210899A | Fingerprint-based access control and identification apparatus | Physics | 160 | Expired |
| US4581760A | Fingerprint verification method | Physics | 85 | Expired |
| US4752966A | Fingerprint identification system | Physics | 65 | Expired |
| US4946276A | Full roll fingerprint apparatus | Physics | 58 | Expired |
| US4185270A | Fingerprint identification method and apparatus | Physics | 58 | Expired |
| US4553837A | Roll fingerprint processing apparatus | Physics | 57 | Expired |
| US4696046A | Matcher | Physics | 56 | Expired |
| US4618988A | Matcher | Physics | 52 | Expired |
| US5736734A | Liquid platen fingerprint image enhancement | Physics | 42 | Expired |
| US4783167A | Finger imaging apparatus using curved platen | Human Necessities | 39 | Expired |
| US4787742A | Direct finger reading | Physics | 35 | Expired |
| US4685145A | Conversion of an image represented by a field of pixels in a gray scale to a field of pixels in binary scale | Physics | 34 | Expired |
| US4569080A | Fingerprint image refinement | Physics | 33 | Expired |
| US4723298A | Image compression technique | Electricity | 26 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.