Sewerage structures

Filing statistics

CPC E03F 5/00 belongs to the parent subclass E03F, which recorded 35,221 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,491 in 2013 to 3,653 in 2023 (+145%), peaking at 5,159 applications in 2020. The most active applicants in class E03 are NEOPERL (934 applications), GROHE (870 applications) and TOTO (646 applications).

Source: EPO PATSTAT, worldwide filings

11 direct subcodes

Child Classifications

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E03F 5/02 Manhole shafts or other inspection chambers (in general E02D29/12); Snow-filling openings; accessories (covers or frames for manholes or the like E02D29/14)
E03F 5/04 Gullies with or without odour seals or sediment traps
E03F 5/08 Ventilation of sewers
E03F 5/10 Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
E03F 5/12 Emergency outlets
E03F 5/14 Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates (for use in sewage purification plants or both in sewage purification plants or in sewer systems B01D, C02F )
E03F 5/18 Tanks for disinfecting, neutralising, or cooling sewage (arrangements in tanks as to the biological or chemical aspect C02F)
E03F 5/20 Siphon pipes or inverted siphons (for connections of baths, basins, or the like E03C1/12 )
E03F 5/22 Adaptations of pumping plants for lifting sewage (wheeled apparatus for emptying sewers or cesspools E03F7/10; pumps, pumping plants, per se F04)
E03F 5/24 Installations for neutralising explosions in sewers
E03F 5/26 Installations for stirring-up sewage

Top Applicants

Top 10 applicants by patent filingsfor class E03, 2013–2023, worldwide · Source: EPO PATSTAT

NEOPERL DE 934
GROHE DE 870
TOTO 646
GEBERIT INTERNATIONAL CH 629
KOHLER COMPANY US 621
TOTO JP 590
LIXIL CORPORATION JP 429
AS AMERICA US 324
HANSGROHE SE DE 314
LIXIL CORPORATION 307