DIFF Subgroup
A47J 36/24 Warming devices
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Parts, details or accessories of cooking-vessels > Warming devices
CPC:
Parts, details or accessories of cooking-vessels (A47J27/00 - A47J33/00 take precedence insofar as these parts, details or accessories are restricted to a particular kind of cooking-vessel provided for in a single one of these groups) > Warming devices
CPC subdivides this area 3x more granularly than IPC with 6 additional codes.
6 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- A47J 36/26 Devices for warming vessels containing drinks or food, especially by means of burners ; Travelling cookers, e.g. using petroleum or gasoline with one burner IPC+CPC Available in IPC and CPC
- A47J 36/28 Warming devices generating the heat by exothermic reactions, e.g. heat released by the contact of unslaked lime with water IPC+CPC Available in IPC and CPC
- A47J 36/30 Devices for warming by making use of burning cartridges or other chemical substances IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class A47,2013–2023, worldwide · Source: EPO PATSTAT
- ZHEJIANG SUPOR 13,571
- MIDEA 10,855
- JOYOUNG COMPANY 10,106
- FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING COMPANY 9,846
- LG ELECTRONICS KR 7,657
- GREE ELECTRIC APPLIANCES 4,805
- GUANGDONG MIDEA ELECTRICAL APPLIANCE COMPANY 4,508
- NINGBO FOTILE KITCHENWARE COMPANY 4,300
- HAIER SMART HOME 3,964
- BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,910
Top Applicants (CPC)
Class A47,2013–2023, worldwide · Source: EPO PATSTAT
- LG ELECTRONICS KR 8,633
- BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 4,258
- SAMSUNG ELECTRONICS COMPANY KR 3,477
- MIDEA 3,257
- SEB FR 2,786
- FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING COMPANY 2,614
- GREE ELECTRIC APPLIANCES 2,370
- VORWERK & CO. INTERHOLDING DE 2,248
- HAIER SMART HOME 2,169
- MIELE DE 2,019