Plessey Semiconductors Ltd
75Patents
15Active
75Granted
43Portfolio score
Filing activity: Jan 29, 1990 → Jan 24, 2023
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5757323A | Antenna arrangements | Electricity | 210 | Expired |
| US5303417A | Mixer for direct conversion receiver | Electricity | 159 | Expired |
| US5463357A | Wide-band microwave modulator arrangements | Electricity | 115 | Expired |
| US5717245A | Ball grid array arrangement | Electricity | 115 | Expired |
| US5451899A | Direct conversion FSK receiver using frequency tracking filters | Electricity | 113 | Expired |
| US5677698A | Slot antenna arrangement for portable personal computers | Electricity | 87 | Expired |
| US5747870A | Multi-chip module inductor structure | Electricity | 80 | Expired |
| US5764070A | Structure for testing bare integrated circuit devices | Physics | 66 | Expired |
| US5230086A | Narrow band communication system | Electricity | 58 | Expired |
| US5376943A | Moving vehicle transponder | Physics | 52 | Expired |
| US5500823A | Memory defect detection arrangement | Physics | 48 | Expired |
| US5224055A | Machine for circuit design | Physics | 34 | Expired |
| US5784261A | Microchip module assemblies | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5587681A | DC restoration circuit | Electricity | 31 | Expired |
| US5469378A | Content addressable memory having match line transistors connected in series and coupled to current sensing circuit | Physics | 19 | Expired |
| US5684760A | Circuit arrangement for measuring a time interval | Physics | 19 | Expired |
| US5418480A | Logic cell using only two N type transistors for generating each logic function | Electricity | 18 | Expired |
| US5122979A | Method and a digital electronic device for the evaluation of an extremum of a set of binary encoded data words | Physics | 16 | Expired |
| US5568345A | Overvoltage protection circuit | Electricity | 14 | Expired |
| US5604658A | Trimmable capacitor | Electricity | 14 | Expired |
| US5821903A | Conformal antenna for wireless local area network transceivers | Electricity | 13 | Expired |
| US5239455A | Charge pump circuit | Electricity | 12 | Expired |
| US5663989A | Control arrangements for digital radio receivers | Electricity | 11 | Expired |
| US5812023A | Voltage offset compensation circuit | Electricity | 10 | Expired |
| US5587713A | Radar transmitter/receivers | Electricity | 10 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.