CPC Main Group Additional Only
F25B 2309/00 Gas cycle refrigeration machines
Filing statistics
CPC F25B 2309/00 belongs to the parent subclass F25B, which recorded 121,123 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,227 in 2013 to 10,966 in 2023 (+52%), peaking at 13,018 applications in 2018. The most active applicants in class F25 are LG ELECTRONICS (9,415 applications), HAIER SMART HOME (8,015 applications) and MITSUBISHI ELECTRIC CORPORATION (5,758 applications).
Source: EPO PATSTAT, worldwide filings
9 direct subcodes
Child Classifications
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- F25B 2309/001 with a linear configuration or a linear motor
- F25B 2309/002 with parallel working cold producing expansion devices in one circuit
- F25B 2309/003 characterised by construction or composition of the regenerator
- F25B 2309/004 using a compressor of the rotary type
- F25B 2309/005 using an expander of the rotary type
- F25B 2309/006 using a distributing valve of the rotary type
- F25B 2309/02 using the Joule-Thompson effect
- F25B 2309/06 Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B 2309/14 Compression machines, plants or systems characterised by the cycle used
Top Applicants
Top 10 applicants by patent filingsfor class F25, 2013–2023, worldwide · Source: EPO PATSTAT
- LG ELECTRONICS KR 9,415
- HAIER SMART HOME 8,015
- MITSUBISHI ELECTRIC CORPORATION JP 5,758
- BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,827
- MIDEA 3,769
- GREE ELECTRIC APPLIANCES 3,417
- HAIER SMART HOME CN 3,403
- SAMSUNG ELECTRONICS COMPANY KR 3,329
- DAIKIN INDUSTRIES JP 2,908
- HEFEI MIDEA REFRIGERATOR COMPANY 2,186