CPC Main Group Additional Only
F01N 2550/00 Monitoring or diagnosing the deterioration of exhaust systems
9 direct subcodes
Child Classifications
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- F01N 2550/02 Catalytic activity of catalytic converters
- F01N 2550/03 of sorbing activity of adsorbents or absorbents
- F01N 2550/04 Filtering activity of particulate filters
- F01N 2550/05 Systems for adding substances into exhaust
- F01N 2550/06 By-pass systems
- F01N 2550/14 Systems for adding secondary air into exhaust
- F01N 2550/20 Monitoring artificially aged exhaust systems
- F01N 2550/22 of electric heaters for exhaust systems or their power supply
- F01N 2550/24 Determining the presence or absence of an exhaust treating device
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