Leader Electronics Corp.
63Patents
21Active
63Granted
42Portfolio score
Filing activity: Sep 8, 1981 → May 1, 2023 · 11 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7168969B1 | Adjustable right angle electrical plug with an interchangeable plug assembly | Electricity | 54 | Expired |
| US5450623A | CN ratio measuring apparatus | Electricity | 44 | Expired |
| US6006089A | System and method of measuring electric field strength | Electricity | 43 | Expired |
| US5768312A | Method and apparatus for evaluating digital transmission systems | Electricity | 37 | Expired |
| US7946868B1 | Power adapter having a replaceable and rotatable plug | Electricity | 31 | Active |
| US5526042A | Apparatus and method for displaying different time-scale waveforms of a signal | Electricity | 25 | Expired |
| US6320353A | Battery charger having a interchangeable plug device | Electricity | 25 | Expired |
| US5352996A | Interdigital bandpass filter | Emerging Cross-Sectional Technologies | 23 | Expired |
| US8033847B1 | Power adapter having a replaceable and positionable plug | Electricity | 17 | Active |
| US8414318B1 | Power adapter having a plug module mounted on a substrate with multiple fasteners with clasps | Electricity | 16 | Active |
| US5897608A | Compensating apparatus and method for signal processing circuit | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5291285A | Television signal level meter | Electricity | 11 | Expired |
| US4488168A | Vector scope | Electricity | 10 | Expired |
| US5589877A | Automatic amplitude control circuit for a vector scope | Electricity | 10 | Expired |
| US5692009A | Jitter measuring method and apparatus | Electricity | 10 | Expired |
| US5272756A | Method and apparatus for determining phase correlation of a stereophonic signal | Electricity | 9 | Expired |
| US4788585A | Apparatus for measuring SC/H phase of composite video signal | Electricity | 9 | Expired |
| US5677501A | Flow display type indicating method and apparatus | Physics | 8 | Expired |
| US5345191A | Broad-band amplifier | Electricity | 7 | Expired |
| US7529321B1 | Radio digital signal receiver | Electricity | 7 | Expired |
| US5933129A | Signal waveform display system | Physics | 6 | Expired |
| US5827619A | Battery holder | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5266938A | Method for calibrating a display and apparatus for implementing the same method | Electricity | 5 | Expired |
| US5218318A | Variable gain amplifier | Electricity | 5 | Expired |
| US5517156A | Digital phase shifter | Electricity | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.