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IPC Subgroup
E03C 1/02

Plumbing installations for fresh water

Introduced: September 1968

Last revised: January 2006

Full Title

Domestic plumbing installations for fresh water or waste water; Sinks > Plumbing installations for fresh water

Classification Context

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

5 direct subcodes

Child Classifications

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  • E03C 1/05 Arrangements of devices on wash-basins, baths, sinks, or the like, for remote control of taps
  • E03C 1/06 Devices for suspending or supporting the supply pipe or supply hose of a shower-bath
  • E03C 1/1 Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves

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