John Roberts
29Patents
10h-index
11Co-inventors
72Inventor score
Filing activity: Nov 14, 1977 → May 22, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6682402B1 | Polishing pads and methods relating thereto | Performing Operations; Transporting | 36 | Expired |
| US6217434A | Polishing pads and methods relating thereto | Performing Operations; Transporting | 29 | Expired |
| US6869350B2 | Polishing pads and methods relating thereto | Performing Operations; Transporting | 29 | Expired |
| US6293852A | Polishing pads and methods relating thereto | Performing Operations; Transporting | 29 | Expired |
| US9525413B2 | Power switching systems comprising high power e-mode GaN transistors and driver circuitry | Electricity | 21 | Active |
| US5509080A | Bass clipping circuit | Electricity | 19 | Expired |
| US5652800A | Automatic mixer priority circuit | Electricity | 17 | Expired |
| US4166245A | Simultaneous display of multiple characteristics of complex waveforms | Physics | 17 | Expired |
| US8791508B2 | High density gallium nitride devices using island topology | Electricity | 17 | Active |
| US9659854B2 | Embedded packaging for devices and systems comprising lateral GaN power transistors | Electricity | 14 | Active |
| US9064947B2 | Island matrixed gallium nitride microwave and power switching transistors | Electricity | 9 | Active |
| US9029866B2 | Gallium nitride power devices using island topography | Electricity | 9 | Active |
| US9105560B2 | Devices and systems for power conversion circuits | Electricity | 8 | Active |
| US9818692B2 | GaN semiconductor device structure and method of fabrication by substrate replacement | Electricity | 7 | Active |
| US4818951A | Gain control or multiplier circuits | Electricity | 7 | Expired |
| US5119426A | Linear array level meter displaying multiple audio characteristics | Physics | 7 | Expired |
| US9660639B2 | Distributed driver circuitry integrated with GaN power transistors | Electricity | 6 | Active |
| US6843712B2 | Polishing pads and methods relating thereto | Performing Operations; Transporting | 5 | Expired |
| US6515859B2 | Heat sink alignment | Electricity | 5 | Expired |
| US9692408B2 | Devices and systems comprising drivers for power conversion circuits | Electricity | 5 | Active |
| US9508797B2 | Gallium nitride power devices using island topography | Electricity | 4 | Active |
| US5875825A | Multi-fuel bib | Performing Operations; Transporting | 3 | Expired |
| US4953222A | Multiple channel gated amplifier system | Electricity | 3 | Expired |
| US10290623B2 | Gate input protection for devices and systems comprising high power E-mode GaN transistors | Electricity | 2 | Active |
| US10281655B2 | Field inversion waveguide using micro-prism array | Physics | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.