William E. Frank
5Patents
5h-index
5Co-inventors
56Inventor score
Filing activity: May 30, 1980 → Apr 30, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4327268A | Current control system for an induction heating apparatus | Electricity | 24 | Expired |
| US4317979A | High current high frequency current transformer | Electricity | 23 | Expired |
| US4471196A | Solid state radio frequency power generator | Electricity | 20 | Expired |
| US4638138A | High frequency inverter circuit for melting and induction heating | Electricity | 13 | Expired |
| US8074558B2 | Axial piston device having rotary displacement control | Mechanical Engineering; Lighting; Heating | 6 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.