IPC Subgroup
E03D 11/02 Water-closet bowls
Introduced: September 1968
Last revised: January 2006
Full Title
Other component parts of water-closets > Water-closet bowls
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- WATER SUPPLY; SEWERAGE
- Subclass:
- WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
Related Keywords
BOWLS for water closets
5 direct subcodes
Child Classifications
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- E03D 11/04 Bowls of flat shape with only slightly inclined bottom
- E03D 11/06 Bowls with downwardly-extending flanges
- E03D 11/08 Bowls with means producing a flushing water swirl
- E03D 11/1 Bowls with closure elements provided between bottom or outlet and the outlet pipe; Bowls with pivotally supported inserts
- E03D 11/11 Bowls combined with a reservoir, e.g. containing apparatus for disinfecting or for disintegrating
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