Hoover Limited
518Patents
20Active
518Granted
46Portfolio score
Filing activity: Mar 4, 1974 → Mar 10, 2015 · 13 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6571415B2 | Random motion cleaner | Human Necessities | 189 | Expired |
| US5564599A | Foldable shipping container | Performing Operations; Transporting | 160 | Expired |
| US6571422B1 | Vacuum cleaner with a microprocessor-based dirt detection circuit | Human Necessities | 142 | Expired |
| US6832407B2 | Moisture indicator for wet pick-up suction cleaner | Human Necessities | 142 | Expired |
| USD474312S1 | Robotic vacuum cleaner | General | 138 | Expired |
| US4831685A | Wet and dry vacuum cleaner | Emerging Cross-Sectional Technologies | 134 | Expired |
| US6572711B2 | Multi-purpose position sensitive floor cleaning device | Human Necessities | 129 | Expired |
| US5608944A | Vacuum cleaner with dirt detection | Human Necessities | 128 | Expired |
| US7201786B2 | Dust bin and filter for robotic vacuum cleaner | Emerging Cross-Sectional Technologies | 125 | Expired |
| US4416033A | Full bag indicator | Emerging Cross-Sectional Technologies | 106 | Expired |
| US6896719B2 | Dirt collecting system for a floor care appliance | Emerging Cross-Sectional Technologies | 106 | Expired |
| US6146434A | Cyclonic dirt cup assembly | Emerging Cross-Sectional Technologies | 100 | Expired |
| USD669235S1 | Vacuum cleaners | General | 91 | Active |
| US5500977A | Upright carpet extractor | Human Necessities | 82 | Expired |
| US7269877B2 | Floor care appliance with network connectivity | Physics | 79 | Expired |
| US5960514A | Wheel driven suction nozzle | Human Necessities | 70 | Expired |
| US5406673A | Tank carry handle and securement latch | Human Necessities | 67 | Expired |
| US4133971A | Hand grip mounted switch and strain relief | Emerging Cross-Sectional Technologies | 61 | Expired |
| USD361179S | Combined wet and dry vacuum cleaner | General | 60 | Expired |
| US5029734A | Composite container | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5351361A | Conversion valve arrangement | Human Necessities | 56 | Expired |
| US5299608A | Sealed coupling for a fluid container | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6615444B2 | Dirt collection system for a vacuum cleaner | Emerging Cross-Sectional Technologies | 55 | Expired |
| US5493752A | Upright carpet and upholstery extractor | Human Necessities | 54 | Expired |
| USD313681S | Upper portion of a vacuum cleaner | General | 54 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.