Patent assignee · DK · COMPANY

Nilfisk A/S

🏢 View company profile →
31Patents
27Active
31Granted
53Portfolio score

Filing activity: Aug 13, 1998 → Jul 14, 2023 · 1 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
USD782759S1 Vacuum cleaner housing General 29 Active
US6094774A Silencer for a suction cleaner Human Necessities 17 Expired
US6065183A Connection element for a mouthpiece Human Necessities 14 Expired
US6125502A Suction pipe for a suction cleaner Human Necessities 10 Expired
USD785878S1 Vacuum cleaner General 9 Active
US10010231B2 Water trailing detection system Human Necessities 6 Active
US7950103B2 Portable cleaning system Human Necessities 5 Active
USD811672S1 Vacuum cleaner General 4 Active
US10470632B2 Suction-type cleaner with dedusting control for the filter or filters Human Necessities 2 Active
US11432698B2 Mobile robotic cleaner Human Necessities 2 Active
US11174607B2 Apparatus for collecting garbage and debris for a motor-sweeper Human Necessities 2 Active
US10596502B2 Filter element and dirt suction device with filter receptacle for such a filter element Performing Operations; Transporting 1 Active
US9837823B2 Battery control system Emerging Cross-Sectional Technologies 1 Active
US10507415B2 Closure system for a filter door in an industrial extraction system Fixed Constructions 1 Active
US10492655B2 Apparatus for collecting garbage and debris for a motor-sweeper Fixed Constructions 0 Active
US10076219B2 Scrubber machine Human Necessities 0 Active
US11707172B2 Dirt collecting device for a cleaning device, particularly a sweeping vehicle, and vacuum cleaner nozzle for a vacuum cleaner, and method for operating both devices Fixed Constructions 0 Active
US12396611B2 High-dump hopper for floor cleaning machine and method for cleaning a floor Human Necessities 0 Active
US11357379B2 Fluid manifolds for floor cleaning machine Human Necessities 0 Active
US10064532B2 Cleaning system utilizing a regenerative blower Mechanical Engineering; Lighting; Heating 0 Active
US11083357B2 Water trailing detection system Human Necessities 0 Active
US10674882B2 Adapter plate Performing Operations; Transporting 0 Active
US10874270B2 Motor housing with silencer for a vacuum cleaning device Human Necessities 0 Active
US9872593B2 Tipping arrangement of a movable cleaning unit Performing Operations; Transporting 0 Active
US9937918B2 Hybrid sweeper-scrubber control method and system Emerging Cross-Sectional Technologies 0 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.