Helmut Parr
2Patents
2h-index
—Co-inventors
31Inventor score
Filing activity: Aug 29, 1986 → Dec 19, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5795518A | Process for producing sealing rings from expandable graphite | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4725051A | Cutting device in folding apparatus of a rotary printing machine | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.