Helmut John
2Patents
2h-index
14Co-inventors
41Inventor score
Filing activity: Apr 7, 1989 → Feb 18, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4919364A | Propulsion system for hypersonic flight | Emerging Cross-Sectional Technologies | 47 | Expired |
| US7799179B2 | Sputtering cathode and device and method for coating a substrate with several layers | Electricity | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.