Earl R. Helderman
4Patents
3h-index
4Co-inventors
39Inventor score
Filing activity: Jan 31, 1980 → Jun 6, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4788627A | Heat sink device using composite metal alloy | Electricity | 51 | Expired |
| US4847445A | Zirconium thin-film metal conductor systems | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4331476A | Sputtering targets with low mobile ion contamination | Performing Operations; Transporting | 11 | Expired |
| US4490408A | Method and device for metallizing the internal surface of a hollow object | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.