E03F SEWERS; CESSPOOLS
Introduced: September 1968
Description
E03F covers the design, construction, and components of sewerage systems and individual wastewater containment structures. This includes sewage pipes, conduits, underground mains, connection networks, inspection and access points (manholes), and treatment-related infrastructure for collecting and transporting municipal and domestic wastewater. Also encompassed are cesspools, septic tanks, and similar on-site wastewater storage or treatment devices for areas lacking centralized sewerage. The classification excludes water supply systems (E03B), water purification and treatment plants (E03C), and the mechanical/chemical processes of wastewater treatment itself (typically C05 or other process classes).
Of 7 combined children, 6 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E03F 1/00 Methods, systems, or installations for draining-off sewage or storm water +4 CPC IPC+CPC Available in IPC and CPC
- E03F 11/00 Cesspools (emptying cesspools E03F7/00; features relating to treatment of sewage C02F) IPC+CPC Available in IPC and CPC
- E03F 2201/00 Details, devices or methods not otherwise provided for 2nd only +4 CPC CPC only CPC only
- E03F 7/00 Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools IPC+CPC Available in IPC and CPC
- E03F 9/00 Arrangements or fixed installations for cleaning sewer pipes, e.g. by flushing (sediment traps, rakes, screens, or the like, arranged in sewer lines E03F5/14; cleaning pipes in general, devices for cleaning pipes B08B9/02 ) +2 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