Richard D. Roberts
109Patents
19h-index
80Co-inventors
89Inventor score
Filing activity: May 19, 1981 → Feb 16, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7830312B2 | Wireless antenna array system architecture and methods to achieve 3D beam coverage | Electricity | 288 | Active |
| US6577670B1 | Programmable filtering mechanism to allow bandwidth overlap between direct sequence spread spectrum communication device and frequency-hopping transmitter | Electricity | 183 | Expired |
| US7274652B1 | Dual packet configuration for wireless communications | Electricity | 105 | Expired |
| US5930301A | Up-conversion mechanism employing side lobe-selective pre-distortion filter and frequency replica-selecting bandpass filter respectively installed upstream and downstream of digital-to-analog converter | Electricity | 80 | Expired |
| US4455894A | Hand held opening apparatus | Emerging Cross-Sectional Technologies | 71 | Expired |
| US6058162A | Testing of digital subscriber loops using multi-tone power ratio (MTPR) waveform | Electricity | 65 | Expired |
| US7646945B2 | Structural member bend radius and shape sensor and measurement apparatus | Physics | 37 | Expired |
| US5293632A | Method and apparatus for load shedding using a trainline monitor system | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5299824A | Wheel chair with rotatable tray | Emerging Cross-Sectional Technologies | 33 | Expired |
| US7039392B2 | System and method for providing device authentication in a wireless network | Electricity | 33 | Expired |
| US10285223B2 | Heating method | Electricity | 28 | Active |
| US6006071A | RF communications system operable in the presence of a repetitive interference source and related methods | Electricity | 26 | Expired |
| US6263048A | Testing of digital subscriber loops using multi-tone power ratio (MTPR) waveform | Electricity | 26 | Expired |
| US5265832A | Distributed PTU interface system | Performing Operations; Transporting | 24 | Expired |
| US5425060A | Mechanism for reducing timing jitter in clock recovery scheme for blind acquisition of full duplex signals | Electricity | 24 | Expired |
| US7653020B2 | Wireless ultra wideband network having interference mitigation and related methods | Electricity | 20 | Active |
| US7263333B2 | Wireless ultra wideband network having frequency bin transmission level setting and related methods | Electricity | 19 | Expired |
| US7280615B2 | Method for making a clear channel assessment in a wireless network | Electricity | 19 | Expired |
| US4575683A | Apparatus and method for removing an offset signal | Electricity | 19 | Expired |
| US7132981B1 | Method of locating object using phase differences among multiple frequency beacons transmitted from spaced apart transmitter sites | Physics | 18 | Expired |
| US8576386B2 | Detecting particulate contaminants in a fluid | Physics | 18 | Active |
| US5425052A | High impedance directional signal separator for extracting and separating respective signalling components of a wireline full-duplex digital data link | Electricity | 18 | Expired |
| US4635280A | Bit synchronizer for decoding data | Electricity | 17 | Expired |
| US5317751A | Method and apparatus for placing a trainline monitor system in a layup mode | Performing Operations; Transporting | 17 | Expired |
| US5042052A | Carrier acquisition scheme for QAM and QPSK data | Electricity | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.