DIFF Subgroup
F24H 1/22 Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters > Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
CPC:
Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters (steam boilers F22B) > Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
Of 6 combined children, 5 exist in both systems.
1 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F24H 1/24 with water mantle surrounding the combustion chamber or chambers IPC+CPC Available in IPC and CPC
- F24H 1/34 with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side IPC+CPC Available in IPC and CPC
- F24H 1/38 with water contained in separate elements, e.g. radiator-type element IPC+CPC Available in IPC and CPC
- F24H 1/44 with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F24,2013–2023, worldwide · Source: EPO PATSTAT
- MIDEA 21,834
- GREE ELECTRIC APPLIANCES 21,535
- GUANGDONG MIDEA REFRIGERATION EQUIPMENT COMPANY 20,870
- QINGDAO HAIER AIR CONDITIONER COMPANY 15,443
- HAIER SMART HOME 15,442
- QINGDAO HAIER AIR CONDITIONER ELECTRIC COMPANY 10,008
- AUX AIR CONDITIONING COMPANY 7,723
- NINGBO AUX ELECTRIC COMPANY 7,499
- NINGBO FOTILE KITCHENWARE COMPANY 6,712
- LG ELECTRONICS KR 6,441
Top Applicants (CPC)
Class F24,2013–2023, worldwide · Source: EPO PATSTAT
- GREE ELECTRIC APPLIANCES 11,167
- QINGDAO HAIER AIR CONDITIONER COMPANY 9,225
- HAIER SMART HOME 8,998
- MIDEA 8,874
- GUANGDONG MIDEA REFRIGERATION EQUIPMENT COMPANY 8,724
- LG ELECTRONICS KR 7,258
- MITSUBISHI ELECTRIC CORPORATION JP 7,009
- QINGDAO HAIER AIR CONDITIONER ELECTRIC COMPANY 6,104
- BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,544
- NINGBO AUX ELECTRIC COMPANY 3,302