David Johnson
75Patents
14h-index
29Co-inventors
84Inventor score
Filing activity: Mar 10, 1981 → Sep 9, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5301353A | Communication system and apparatus | Electricity | 77 | Expired |
| US5727055A | Information communication systems | Electricity | 55 | Expired |
| US9125462B2 | High capacity solar charging umbrella | Emerging Cross-Sectional Technologies | 43 | Active |
| US5210798A | Vector neural network for low signal-to-noise ratio detection of a target | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4679803A | Apparatus for maintaining stability of mobile land vehicles on sloping terrain | Human Necessities | 29 | Expired |
| US9088181B2 | Sunshades with solar power supplies for charging electronic devices | Emerging Cross-Sectional Technologies | 26 | Active |
| US9289039B2 | Sunshades with solar power supplies for charging electronic devices | Emerging Cross-Sectional Technologies | 23 | Active |
| US8246354B2 | Training system and method using a dynamic perturbation platform | Human Necessities | 20 | Active |
| US9510653B2 | High capacity solar charging umbrella | Emerging Cross-Sectional Technologies | 19 | Active |
| USD693561S1 | Umbrella with solar panels | General | 17 | Active |
| US8622747B2 | Training system and method using a dynamic perturbation platform | Human Necessities | 17 | Active |
| US4615532A | Locking balls for logging carriage | Emerging Cross-Sectional Technologies | 15 | Expired |
| USD703939S1 | Umbrella with solar panels | General | 14 | Active |
| USD706026S1 | Umbrella with solar panels | General | 14 | Active |
| US5613697A | Elevatable wheelchair | Human Necessities | 14 | Expired |
| USD758298S1 | Foldable solar panels for umbrella | General | 14 | Active |
| USD770757S1 | Umbrella with solar panels | General | 14 | Active |
| USD758062S1 | Umbrella with solar panels | General | 13 | Active |
| USD749313S1 | Umbrella with solar panels | General | 12 | Active |
| USD799199S1 | Umbrella with solar panels | General | 11 | Active |
| USD770756S1 | Umbrella with solar panels | General | 11 | Active |
| USD693562S1 | Umbrella with solar panels | General | 11 | Active |
| USD693563S1 | Umbrella with solar panels | General | 11 | Active |
| USD748905S1 | Umbrella with solar panels | General | 10 | Active |
| USD702037S1 | Umbrella with solar panels | General | 9 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.