• Statistics
  • Aeration of sea water - algae removal
  • Aeration of sea water - chemically or electrically powered
  • Aeration of sea water - in bays
  • Aeration of sea water - in lakes
  • Aeration of sea water - in the ocean
  • Aeration of sea water - sun or wind powered
  • Aeration of sea water - wave and tide powered
  • Alternatives to hazardous substances - biocides and pesticides
  • Alternatives to hazardous substances - flame retardation
  • Alternatives to hazardous substances - impregnation
  • Alternatives to phosphorous substances in bleaching products
  • Alternatives to phosphorous substances in dishwashing detergents
  • Alternatives to phosphorous substances in laundry detergents
  • Anti-fouling treatment for ships
  • Beach cleaning
  • Biogas from manure - additives
  • Biogas from manure - agitators
  • Biogas from manure - collecting and processing
  • Biogas from manure - digesters
  • Biogas from manure - heat recuperation
  • Biogas from manure - roofs and coverings
  • Bycatch reduction
  • Improved use of fertilisers
  • Mussel farming
  • Oil spill control - absorbants and coagulants
  • Oil spill control - absorbing plants
  • Oil spill control - bacteria
  • Oil spill control - detection
  • Oil spill control - dispersants
  • Oil spill control - mechanical
  • Oil spill control - other
  • Reduction of hazardous substances - dioxins
  • Reduction of hazardous substances - lead
  • Reduction of hazardous substances - mercury
  • Reduction of hazardous substances - small scale combustion
  • Reduction of mercury from waste water
  • Reduction of NOx emissions from ships
  • Removal of nutrients from agricultural wastewater
    • Patent applications per year
    • Patent applications per country
    • Patent applications per applicant
    • Patent applications per IPC group
  • Removal of nutrients from domestic waste water
  • Removal of nutrients from industrial and municipal waste water - ammonia stripping
  • Removal of nutrients from industrial and municipal waste water - biological N removal
  • Removal of nutrients from industrial and municipal waste water - biological P removal
  • Removal of nutrients from industrial and municipal waste water - constructed wetlands
  • Removal of nutrients from industrial and municipal waste water - other
  • Removal of nutrients from waste water from ships
  • Treatment of ballast water

WO = PCT applications
EP = EPC applications