IPC Main Group
E03F 5/00 Sewerage structures
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- WATER SUPPLY; SEWERAGE
- Subclass:
- SEWERS; CESSPOOLS
Related Keywords
CATCH PITSSILT [boxes]
11 direct subcodes
Child Classifications
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- E03F 5/02 Manhole shafts or other inspection chambers; Snow-filling openings; Accessories
- E03F 5/04 Gullies with or without odour seals or sediment traps
- E03F 5/08 Ventilation of sewers
- E03F 5/1 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
- E03F 5/18 Tanks for disinfecting, neutralising, or cooling sewage
- E03F 5/2 Siphon pipes or inverted siphons
- E03F 5/22 Adaptations of pumping plants for lifting sewage
- 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
- TOTO 2,957
- LIXIL CORPORATION 1,646
- XIAMEN RT PLUMBING TECHNOLOGY COMPANY 925
- NEOPERL DE 870
- GROHE DE 828
- PANASONIC INTELLECTUAL PROPERTY 738
- WUHAN SHENGYU DRAINAGE SYSTEMS COMPANY 727
- GEBERIT INTERNATIONAL CH 613
- KOHLER COMPANY US 570
- TOTO JP 549