James Gregory Powell
5Patents
2h-index
8Co-inventors
44Inventor score
Filing activity: Feb 23, 1978 → Feb 27, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4268353A | Demountable externally anchored low-stress magnet system and related method | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5262604A | Float level switch for a nuclear power plant containment vessel | Electricity | 6 | Expired |
| US10982441B2 | Multiple layer substrate for roofing materials | Fixed Constructions | 2 | Active |
| US12123193B2 | Continuous nonwoven polyester fiber and fiberglass thread hybrid mat | Fixed Constructions | 0 | Active |
| US11946253B2 | Impact resistant roofing shingle and method for making same | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.