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IPC Subgroup
E03D 9/02

Devices adding a disinfecting, deodorising or cleaning agent to the water while flushing, or in the flushing tank

Introduced: September 1968

Last revised: January 2006

Full Title

Sanitary or other accessories for lavatories > Devices adding a disinfecting, deodorising or cleaning agent to the water while flushing, or in the flushing tank

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
WATER SUPPLY; SEWERAGE
Subclass:
WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR

Filing statistics

IPC E03D 9/02 belongs to the parent subclass E03D, which recorded 48,004 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,300 in 2013 to 3,633 in 2023 (+10%), peaking at 5,771 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

DEODORISING of lavatoriesDISINFECTING of lavatories

1 direct subcode

Child Classifications

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  • E03D 9/03 consisting of a separate container with an outlet through which the agent is introduced into the flushing water, e.g. by suction

Top Applicants

Top 10 applicants by patent filingsfor class E03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. TOTO 2,957
  2. LIXIL CORPORATION 1,646
  3. XIAMEN RT PLUMBING TECHNOLOGY COMPANY 925
  4. NEOPERL DE 870
  5. GROHE DE 828
  6. PANASONIC INTELLECTUAL PROPERTY 738
  7. WUHAN SHENGYU DRAINAGE SYSTEMS COMPANY 727
  8. GEBERIT INTERNATIONAL CH 613
  9. KOHLER COMPANY US 570
  10. TOTO JP 549