John E. Johnston
25Patents
15h-index
46Co-inventors
81Inventor score
Filing activity: Mar 22, 1993 → Feb 26, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8018431B1 | Page turner for handheld electronic book reader device | Physics | 320 | Active |
| USD611409S1 | Power adapter | General | 155 | Expired |
| USD600699S1 | Slip cover | General | 122 | Expired |
| USD623184S1 | Electronic reader device | General | 77 | Expired |
| US5392192A | Methods and apparatus for snap-together computer construction | Emerging Cross-Sectional Technologies | 58 | Expired |
| USD601500S1 | Slideable power adapter | General | 52 | Expired |
| US8113855B2 | Electrical power adapter | Electricity | 42 | Active |
| US5831613A | Removable storage media stop/eject system for personal computers | Physics | 36 | Expired |
| USD624074S1 | Electronic reader device | General | 35 | Expired |
| USD601559S1 | Electronic reader device | General | 33 | Expired |
| US5816081A | Methods and apparatus for locking peripheral equipment to a computer housing | Emerging Cross-Sectional Technologies | 33 | Expired |
| US8692736B1 | Configurable keypad for an electronic device | Physics | 15 | Active |
| US11446810B1 | Robotic assistant | Physics | 15 | Active |
| USD572393S1 | Stowed reading light | General | 15 | Expired |
| USD585902S1 | Electronic media reader keypad | General | 15 | Expired |
| US7331116B1 | Multi-reel marking apparatus | Performing Operations; Transporting | 12 | Active |
| US8033029B2 | Multi-reel marking apparatus | Performing Operations; Transporting | 9 | Active |
| USD622722S1 | Electronic reader device | General | 8 | Expired |
| US8413904B1 | Keyboard layout for handheld electronic book reader device | Physics | 6 | Active |
| US11345052B1 | Extensible mast device | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8460017B1 | Electrical power adapter | Electricity | 4 | Active |
| US7805850B1 | Extendable edge reference tool | Physics | 3 | Active |
| US9819815B1 | Surface display assembly having proximate active elements | Physics | 2 | Active |
| US11391349B1 | Compact angular actuator | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8261459B2 | Extendable edge reference tool | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.