CPC Definition - Subclass E03C

Last Updated Version: 2019.01
DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS
Domestic plumbing installations for fresh water or waste water; Sinks {(work tops A47B 77/022)}
Definition statement

This place covers:

Water dispensing devices for bathroom and kitchen; constructional features of wash basins and sinks; draining devices for wash basins and sinks

Limiting references

This place does not cover:

Wash-stands without connection to either water supply or waste pipe

A47K 1/00

Plugs for wash basins

A47K 1/14

Constructional features of shower bases and bath tubs

A47K 3/00

Bathing devices for therapeutic purposes; constructional features of nozzles for whirlpools

A61H 33/00

Mechanical filtering devices


Disintegrating in general


Nozzles and liquid spraying devices in general


Shower heads

B05B 1/18

Fountains in general

B05B 17/08

Cleaning of pipes in general


Beverages on draught with tap

B67D 1/00

Local water supply pipe systems


De-clogging devices specially adapted for toilets

E03D 9/00

Devices in the toilet bowl producing upwardly directed sprays

E03D 9/08

Building parts characterised by incorporated canalisations

E04B 1/0023

Fixing elements in general


Valves, taps and stopcocks in general


Water conduits and pipes in general


Lighting devices


Domestic hot water supply systems


Constructional features of different sensor types used for control of taps


Control of flow rate in general

G05D 7/00

Control of temperature in general

G05D 23/00

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Sanitary equipment in rail vehicles

B61D 35/00

Sanitary facilities specially adapted for use in ships

B63B 29/14

Sanitary equipment in aircrafts

B64D 11/02

Cleaning or other treatment of water


Hand-held spray heads for washing of buttocks

E03D 9/08

Informative references

Attention is drawn to the following places, which may be of interest for search:

Filters mounted on faucet or tap

B01D 35/04

Combinations of wash basins with toilet bowl or toilet cistern


Odour seals for floor drains or level access showers

E03F 5/04

Adjusting tools for anchoring of elements in building walls

E04G 21/185

Special rules of classification

Water monitoring or leakage prevention for domestic plumbing installations are classified in E03C 1/00.

Built-in wall boxes for taps are classified in E03C 1/021.

Combined water inlet and overflow for bathtubs are classified in E03C 1/04 and E03C/24 and given the subgroup E03C 2201/80.

Documents for E03C 1/10 having an air gap device (E03C 1/102) in combination with one or more valves (E03C 1/104, E03C 1/106, E03C 1/108) are to be classified in the two subgroups concerned.

Connecting supplementary waste water sources to waste pipe are classified in E03C 1/184.

Tub boxes for collecting leakage water are classified in E03C 1/20.

E03C 2201/90 applies to documents which are not to be classified in E03C 1/324.

Devices for cleaning domestic waste pipes which can also be used in sewage pipes are classified in E03F 9/00.

Documents for E03C 1/281 concerning urinals are also classified in the corresponding subgroup in E03D 13/00.

The subgroups below E03C 2201/00 are given to documents showing sufficient information of the respective feature to be used for a future search, without this feature forming the invention.