CPC Main Group Additional Only
F01N 2240/00 Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
Filing statistics
CPC F01N 2240/00 belongs to the parent subclass F01N, which recorded 80,748 patent applications worldwide between 2013 and 2023. Annual filings declined from 7,362 in 2013 to 4,058 in 2023 (-45%), peaking at 9,617 applications in 2017. The most active applicants in class F01 are GE (GENERAL ELECTRIC COMPANY) (9,989 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (8,110 applications) and SAFRAN AIRCRAFT ENGINES (6,248 applications).
Source: EPO PATSTAT, worldwide filings
20 direct subcodes
Child Classifications
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- F01N 2240/02 a heat exchanger
- F01N 2240/04 an electric, e.g. electrostatic, device other than a heater
- F01N 2240/05 a magnetic, e.g. electromagnetic, device other than a valve
- F01N 2240/06 an inertial, e.g. centrifugal, device
- F01N 2240/10 a heat accumulator
- F01N 2240/12 a thermal reactor
- F01N 2240/14 a fuel burner
- F01N 2240/16 an electric heater, i.e. a resistance heater
- F01N 2240/18 an adsorber or absorber
- F01N 2240/20 a flow director or deflector
- F01N 2240/22 a condensation chamber
- F01N 2240/25 an ammonia generator
- F01N 2240/26 an exhaust gas reservoir, e.g. emission buffer
- F01N 2240/28 a plasma reactor
- F01N 2240/30 a fuel reformer
- F01N 2240/32 a fuel cell
- F01N 2240/34 an electrolyser
- F01N 2240/36 an exhaust flap
- F01N 2240/38 an ozone (O3) generator, e.g. for adding ozone after generation of ozone from air
- F01N 2240/40 a hydrolysis catalyst
Top Applicants
Top 10 applicants by patent filingsfor class F01, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 9,989
- UNITED TECHNOLOGIES CORPORATION (UTC) US 8,110
- SAFRAN AIRCRAFT ENGINES FR 6,248
- HYUNDAI MOTOR COMPANY KR 4,530
- SIEMENS DE 4,461
- FORD GLOBAL TECHNOLOGIES US 4,029
- RAYTHEON TECHNOLOGIES CORPORATION US 3,947
- TOYOTA MOTOR CORPORATION JP 3,734
- GE (GENERAL ELECTRIC COMPANY) 3,415
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 3,063