CPC Subgroup Additional Only
F01N 2490/02 Two or more expansion chambers in series connected by means of tubes
Full Title
Structure, disposition or shape of gas-chambers > Two or more expansion chambers in series connected by means of tubes
2 direct subcodes
Child Classifications
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- F01N 2490/04 the gases flowing longitudinally from inlet to outlet only in one direction
- F01N 2490/06 the gases flowing longitudinally from inlet to outlet in opposite directions
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