David Johnston
6Patents
4h-index
9Co-inventors
50Inventor score
Filing activity: Apr 30, 1979 → Oct 29, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD1000326S1 | Front grille for a vehicle | General | 19 | Active |
| USD1000325S1 | Air intake for a vehicle | General | 12 | Active |
| US4222395A | Threshing cage fingers for retarding the flow of material through an axial flow harvester | Human Necessities | 7 | Expired |
| US4270551A | Air baffle for harvester accelerator rolls | Human Necessities | 5 | Expired |
| USD999125S1 | Grille surround for a vehicle | General | 3 | Active |
| US11096843B2 | Vehicle wheelchair lift | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.