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IPC Subgroup
E03D 1/3

Valves for high or low cisterns; Their arrangement

Introduced: September 1968

Last revised: January 2006

Full Title

Water flushing devices with cisterns > Valves for high or low cisterns; Their arrangement

Classification Context

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

4 direct subcodes

Child Classifications

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  • E03D 1/32 Arrangement of inlet valves
  • E03D 1/33 Adaptations or arrangements of floats
  • E03D 1/36 Associated working of inlet and outlet 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