Robert E. Johnson
38Patents
11h-index
11Co-inventors
72Inventor score
Filing activity: Feb 15, 1974 → Jan 7, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6763025B2 | Time division multiplexing over broadband modulation method and apparatus | Electricity | 118 | Expired |
| US6891841B2 | Time division multiple access over broadband modulation method and apparatus | Electricity | 106 | Expired |
| USD441093S | Outer surface of a platform | General | 51 | Expired |
| US5577567A | Stair climbing wheelchair | Emerging Cross-Sectional Technologies | 44 | Expired |
| US7194001B2 | Time division multiplexing over broadband modulation method and apparatus | Electricity | 31 | Expired |
| US5580128A | Therapeutic seat | Human Necessities | 27 | Expired |
| US3942219A | Vacuum cleaner having edge cleaning features | Human Necessities | 26 | Expired |
| US3932912A | Vacuum cleaner | Human Necessities | 25 | Expired |
| US4599965A | Pivotally mounted diver's signal flag | Physics | 25 | Expired |
| US5809589A | Shower curtain retainer | Emerging Cross-Sectional Technologies | 23 | Expired |
| US3936903A | Vacuum cleaner suction tool | Human Necessities | 18 | Expired |
| US6769442B2 | Hunting blind with flip-up hood | Emerging Cross-Sectional Technologies | 11 | Expired |
| US9746874B2 | Ergonomically symmetric pedal control system | Emerging Cross-Sectional Technologies | 10 | Active |
| US4593898A | Bicycle exercising means and method | Human Necessities | 9 | Expired |
| US8317138B1 | Eating utensil holder clip | Human Necessities | 9 | Active |
| US5380721A | Aryl-fused and hetaryl-fused-2,4-diazepine and 2,4-diazocine antiarrhythmic agents | Chemistry; Metallurgy | 7 | Expired |
| US7993726B2 | Matting product | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4051147A | 1-(Arylamino)-and 1-(arylimino)-pyrroles | Chemistry; Metallurgy | 6 | Expired |
| USD289853S | Tie-down hook | General | 6 | Expired |
| US4163015A | 1-(Arylamino)pyrroles | Chemistry; Metallurgy | 6 | Expired |
| US9700165B2 | Therapy platform anti-fatigue matting | Human Necessities | 6 | Active |
| US4439774A | Antenna reflector with triangulated cellular back structure | Electricity | 5 | Expired |
| US5624922A | Aryl-fused and hetaryl-fused-2,4-diazepine and 2,4-diazocine antiarrhythmic agents | Chemistry; Metallurgy | 4 | Expired |
| US10524602B2 | Therapy platform anti-fatigue matting | Emerging Cross-Sectional Technologies | 3 | Active |
| US5098901A | Imidazo [1,2-b][2]benzazepine and pyrimido [1,2-b][2]benzazepine antiarrhythmic agents | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.