David O. Richards
4Patents
3h-index
8Co-inventors
47Inventor score
Filing activity: Sep 17, 1976 → Dec 15, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4073997A | Composite panel | Emerging Cross-Sectional Technologies | 94 | Expired |
| US4358371A | Backwashable filter | Textiles; Paper | 18 | Expired |
| US4358370A | Backwashable filter | Performing Operations; Transporting | 12 | Expired |
| US11174809B1 | Controlling an internal combustion engine system | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.