DIFF Subgroup
E03C 1/02 Plumbing installations for fresh water
Introduced: September 1968
Full Title
Domestic plumbing installations for fresh water or waste water; Sinks > Plumbing installations for fresh water
Of 9 combined children, 5 exist in both systems.
4 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E03C 1/04 Water-basin installations specially adapted to wash-basins or baths (valves, faucets, mixing valves, taps F16K) +12 CPC IPC+CPC Available in IPC and CPC
- E03C 1/05 Arrangements of devices on wash-basins, baths, sinks, or the like for remote control of taps (remote control of taps or the like per se F16K) +2 CPC IPC+CPC Available in IPC and CPC
- E03C 1/06 Devices for suspending or supporting the supply pipe or supply hose of a shower-bath +2 CPC IPC+CPC Available in IPC and CPC
- E03C 1/10 Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves (vacuum-breakers in general F16K, F16L) +4 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
Class E03,2013–2023, worldwide · Source: EPO PATSTAT
- NEOPERL DE 934
- GROHE DE 870
- TOTO 646
- GEBERIT INTERNATIONAL CH 629
- KOHLER COMPANY US 621
- TOTO JP 590
- LIXIL CORPORATION JP 429
- AS AMERICA US 324
- HANSGROHE SE DE 314
- LIXIL CORPORATION 307