John Lewellen
29Patents
8h-index
40Co-inventors
75Inventor score
Filing activity: Dec 29, 1998 → Aug 26, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9330879B2 | Bremstrahlung target for intensity modulated X-ray radiation therapy and stereotactic X-ray therapy | Electricity | 25 | Active |
| US6254936A | Environment exchange control for material on a wafer surface | Physics | 22 | Expired |
| US6327793A | Method for two dimensional adaptive process control of critical dimensions during spin coating process | Performing Operations; Transporting | 21 | Expired |
| US6662466B2 | Method for two dimensional adaptive process control of critical dimensions during spin coating process | Performing Operations; Transporting | 16 | Expired |
| US6977098B2 | Method of uniformly coating a substrate | Performing Operations; Transporting | 15 | Expired |
| US6468586B1 | Environment exchange control for material on a wafer surface | Physics | 14 | Expired |
| US6780461B2 | Environment exchange control for material on a wafer surface | Physics | 13 | Expired |
| US6858998B1 | Variable-period undulators for synchrotron radiation | Electricity | 10 | Expired |
| US6844027B1 | Environment exchange control for material on a wafer surface | Physics | 7 | Expired |
| US7030039B2 | Method of uniformly coating a substrate | Performing Operations; Transporting | 6 | Expired |
| US7312461B2 | Laparoscopic tumor therapy using high energy electron irradiation | Human Necessities | 5 | Expired |
| US11160158B1 | Compact, high-efficiency accelerators driven by low-voltage solid-state amplifiers | Electricity | 4 | Active |
| US10568196B1 | Compact, high-efficiency accelerators driven by low-voltage solid-state amplifiers | Electricity | 4 | Active |
| US9129714B2 | Electron linac for medical isotope production with improved energy efficiency and isotope recovery | Electricity | 3 | Active |
| US7760054B2 | Tubular RF cage field confinement cavity | Electricity | 3 | Active |
| US6987361B1 | Field emission cathode gating for RF electron guns and planar focusing cathodes | Electricity | 2 | Expired |
| US10211505B1 | Sideline radio-frequency power coupler | Electricity | 2 | Active |
| US10354828B1 | Photocathodes with protective in-situ graphene gas barrier films and method of making the same | Electricity | 2 | Active |
| US10998158B1 | Variable-focus magnetostatic lens | Electricity | 2 | Active |
| US6911091B2 | Environment exchange control for material on a wafer surface | Physics | 1 | Expired |
| US11527806B1 | Waveguide flange adapter configured to connect with first and second waveguide flanges, where the first and second flanges have hole patterns that are different | Electricity | 1 | Active |
| US10649117B1 | Multicube retroreflector and retroreflector-based communication system | Physics | 1 | Active |
| US7250727B2 | High power, long focus electron source for beam processing | Electricity | 1 | Expired |
| US7018943B2 | Method of uniformly coating a substrate | Performing Operations; Transporting | 1 | Expired |
| US10854417B1 | Radial radio frequency (RF) electron guns | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.