Yokogawa Electric Corporation
1,333Patents
1,027Active
1,333Granted
61Portfolio score
Filing activity: Jul 23, 1984 → Dec 31, 2024 · 207 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5745049A | Wireless equipment diagnosis system | Emerging Cross-Sectional Technologies | 261 | Expired |
| US7345580B2 | Alarm management system | Physics | 149 | Expired |
| US6441748B1 | Road surface condition monitoring system using sensors disposed under the road | Physics | 115 | Expired |
| USD801989S1 | Display screen with graphic user interface | General | 113 | Active |
| US6031661A | Confocal microscopic equipment | Physics | 106 | Expired |
| US5424932A | Multi-output switching power supply having an improved secondary output circuit | Electricity | 101 | Expired |
| US6684137B2 | Traffic accident recording system | Physics | 87 | Expired |
| US5301121A | Measuring electrical parameters of power line operation, using a digital computer | Physics | 85 | Expired |
| US6292376A | Switching power supply | Electricity | 85 | Expired |
| US9509566B2 | System and method for generating output data | Physics | 80 | Active |
| US5521573A | Printed coil | Electricity | 78 | Expired |
| US5349523A | Switching power supply | Electricity | 75 | Expired |
| US7853104B2 | Bidirectional optical module and optical time domain reflectometer | Physics | 75 | Active |
| US5533413A | Equipment diagnosis system | Physics | 74 | Expired |
| US7340358B2 | Measurement equipment | Physics | 74 | Expired |
| US6205202A | Subscriber line tester | Electricity | 72 | Expired |
| US4841775A | Vibratory transducer | Electricity | 71 | Expired |
| USD674787S1 | Field wireless access point | General | 69 | Active |
| US6590710B2 | Fabry-Perot filter, wavelength-selective infrared detector and infrared gas analyzer using the filter and detector | Physics | 65 | Expired |
| US5578764A | Coriolis type mass flowmeter utilizing phase shifters for phase shifting of the output signals | Physics | 64 | Expired |
| US5483229A | Input-output unit | Electricity | 64 | Expired |
| US4856899A | Optical frequency analyzer using a local oscillator heterodyne detection of incident light | Electricity | 61 | Expired |
| USD609195S1 | Controller | General | 60 | Expired |
| US7880868B2 | Optical time domain reflectometer | Physics | 56 | Active |
| USD702242S1 | Signal conversion module for recorder | General | 53 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.