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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
E03D 3/02

Self-closing flushing valves (self-closing valves in general F16K21/04)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Self-closing flushing valves

CPC: Self-closing flushing valves (self-closing valves in general F16K21/04)

Full Title

Full titles differ between systems:

IPC:

Flushing devices operated by pressure of the water supply system > Self-closing flushing valves

CPC:

Flushing devices operated by pressure of the water supply system > Self-closing flushing valves (self-closing valves in general F16K21/04)

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • E03D 3/04 with piston valve and pressure chamber for retarding the valve-closing movement IPC+CPC Available in IPC and CPC
  • E03D 3/06 with diaphragm valve and pressure chamber for retarding the valve-closing movement IPC+CPC Available in IPC and CPC
  • E03D 3/08 with other retarding devices IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class E03,2013–2023, worldwide · Source: EPO PATSTAT

  1. NEOPERL DE 934
  2. GROHE DE 870
  3. TOTO 646
  4. GEBERIT INTERNATIONAL CH 629
  5. KOHLER COMPANY US 621
  6. TOTO JP 590
  7. LIXIL CORPORATION JP 429
  8. AS AMERICA US 324
  9. HANSGROHE SE DE 314
  10. LIXIL CORPORATION 307