Robert L. Kopenhaver
2Patents
2h-index
—Co-inventors
24Inventor score
Filing activity: Jun 20, 1977 → May 22, 1981
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4352837A | Method of manufacturing roofing shingles having multiple ply appearance | Fixed Constructions | 87 | Expired |
| US4295445A | Apparatus for manufacturing roofing shingles having multiple ply-appearance | Fixed Constructions | 33 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.