William G. Callahan
3Patents
3h-index
11Co-inventors
43Inventor score
Filing activity: Dec 22, 1998 → Mar 29, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6374144B1 | Method and apparatus for controlling a system using hierarchical state machines | Physics | 108 | Expired |
| US7355188B2 | Technique for uniformity tuning in an ion implanter system | Electricity | 7 | Active |
| US7663125B2 | Ion beam current uniformity monitor, ion implanter and related method | Electricity | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.