IPC Subgroup
E03D 1/02 High-level flushing systems
Introduced: September 1968
Last revised: January 2006
Full Title
Water flushing devices with cisterns > High-level flushing systems
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- WATER SUPPLY; SEWERAGE
- Subclass:
- WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
7 direct subcodes
Child Classifications
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- E03D 1/04 Cisterns with bell siphons
- E03D 1/06 Cisterns with tube siphons
- E03D 1/14 Cisterns discharging variable quantities of water
- E03D 1/16 Cisterns for periodical discharge
- E03D 1/18 Cisterns empty when not in action
- E03D 1/2 Cisterns with tiltably-mounted containers
- E03D 1/22 Twin or multiple flushing cisterns
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