Methods or apparatus for fitting, inserting or repairing different elements

Filing statistics

CPC F01N 2450/00 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

14 direct subcodes

Child Classifications

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F01N 2450/02 Fitting monolithic blocks into the housing
F01N 2450/04 Filling or emptying a chamber with granular material
F01N 2450/06 Inserting sound absorbing material into a chamber
F01N 2450/08 Repairing the housing or pipe-joints
F01N 2450/10 Fitting temporarily exhaust apparatus on exhaust conduit, e.g. in confined environment, garage or the like
F01N 2450/16 by using threaded joints
F01N 2450/18 by using quick-active type locking mechanisms, e.g. clips
F01N 2450/20 by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
F01N 2450/22 by welding or brazing
F01N 2450/24 by bolts, screws, rivets or the like
F01N 2450/26 by bayonet fittings
F01N 2450/28 by using adhesive material, e.g. cement
F01N 2450/30 Removable or rechangeable blocks or cartridges, e.g. for filters
F01N 2450/40 Retrofitting exhaust apparatus

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