Fluke Corporation
824Patents
625Active
824Granted
60Portfolio score
Filing activity: Jan 11, 1993 → Mar 12, 2024 · 188 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6293700A | Calibrated isothermal assembly for a thermocouple thermometer | Physics | 510 | Expired |
| US5586054A | time-domain reflectometer for testing coaxial cables | Physics | 244 | Expired |
| US5724510A | Method of configuring a valid IP address and detecting duplicate IP addresses in a local area network | Electricity | 209 | Expired |
| US6064372A | Touchscreen display system for a test instrument | Physics | 178 | Expired |
| US6624640B2 | Capacitance measurement | Physics | 118 | Expired |
| US6384614B1 | Single tip Kelvin probe | Physics | 106 | Expired |
| US6002671A | Test instrument for testing asymmetric digital subscriber lines | Electricity | 103 | Expired |
| USD397246S | Network tester holster | General | 97 | Expired |
| US5917808A | Method of identifying device types on a local area network using passive monitoring | Electricity | 79 | Expired |
| USD895642S1 | Display screen or portion thereof with graphical user interface for fiber optic cable inspection | General | 78 | Active |
| US6043640A | Multimeter with current sensor | Physics | 78 | Expired |
| US7538326B2 | Visible light and IR combined image camera with a laser pointer | Electricity | 76 | Expired |
| US6856138B2 | Time-domain reflectometer for testing terminated network cable | Physics | 71 | Expired |
| US5532603A | Cross-talk measurement apparatus with near-end compensation | Electricity | 68 | Expired |
| US5381348A | Token ring local area network testing apparatus using time delay reflectory | Electricity | 67 | Expired |
| US6191723A | Fast capacitance measurement | Physics | 66 | Expired |
| US5982753A | Method of testing a switched local area network | Electricity | 65 | Expired |
| USD376989S | Graphical test instrument | General | 60 | Expired |
| US5633801A | Pulse-based impedance measurement instrument | Physics | 60 | Expired |
| USD753639S1 | Wireless communication device | General | 56 | Active |
| US7339685B2 | Method and apparatus for electronically generating an outline indicating the size of an energy zone imaged onto the IR detector of a radiometer | Physics | 55 | Active |
| USD857735S1 | Display screen or portion thereof with graphical user interface | General | 53 | Active |
| US6285653A | Method and apparatus to measure far end crosstalk for the determination of equal level far end crosstalk | Electricity | 51 | Expired |
| US5495168A | Method of signal analysis employing histograms to establish stable, scaled displays in oscilloscopes | Physics | 48 | Expired |
| USD427090S | Digital electronic instrument | General | 47 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.