IPC Main Group
E03B 11/00 Arrangements or adaptations of tanks for water supply
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- WATER SUPPLY; SEWERAGE
- Subclass:
- INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
Filing statistics
IPC E03B 11/00 belongs to the parent subclass E03B, which recorded 82,071 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,678 in 2013 to 9,938 in 2023 (+271%), peaking at 12,492 applications in 2020. The most active applicants in class E03 are TOTO (2,957 applications), LIXIL CORPORATION (1,646 applications) and XIAMEN RT PLUMBING TECHNOLOGY COMPANY (925 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
CISTERNS for water storagearrangements of RESERVOIR(S) tanks for water supplyarrangements of TANKS for water supply
2 direct subcodes
Child Classifications
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- E03B 11/02 for domestic or like local water supply
- E03B 11/1 for public or like main water supply
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