for combinations of baths, showers, sinks, wash-basins, closets, urinals, or the like

Introduced: September 1968

Last revised: January 2006

Full Title

Domestic plumbing installations for fresh water or waste water; Sinks > for combinations of baths, showers, sinks, wash-basins, closets, urinals, or the like

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: WATER SUPPLY; SEWERAGE
Subclass:: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS

Filing statistics

IPC E03C 1/01 belongs to the parent subclass E03C, which recorded 60,571 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,022 in 2013 to 5,311 in 2023 (+32%), peaking at 7,532 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

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