IPC Main Group
F02M 23/00 Apparatus for adding secondary air to fuel-air mixture
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- Subclass:
- SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
Filing statistics
IPC F02M 23/00 belongs to the parent subclass F02M, which recorded 118,640 patent applications worldwide between 2013 and 2023. Annual filings declined from 11,949 in 2013 to 6,885 in 2023 (-42%), peaking at 13,445 applications in 2016. The most active applicants in class F02 are TOYOTA MOTOR CORPORATION (8,687 applications), ROBERT BOSCH (8,328 applications) and FORD GLOBAL TECHNOLOGIES (7,423 applications).
Source: EPO PATSTAT, worldwide filings
4 direct subcodes
Child Classifications
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- F02M 23/02 with personal control
- F02M 23/04 with automatic control
- F02M 23/12 characterised by being combined with device for, or by secondary air effecting, re-atomising of condensed fuel
- F02M 23/14 characterised by adding hot air
Top Applicants
Top 10 applicants by patent filingsfor class F02, 2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 8,687
- ROBERT BOSCH DE 8,328
- FORD GLOBAL TECHNOLOGIES US 7,423
- GE (GENERAL ELECTRIC COMPANY) US 5,732
- UNITED TECHNOLOGIES CORPORATION (UTC) US 5,592
- HYUNDAI MOTOR COMPANY KR 4,699
- TOYOTA MOTOR CORPORATION JP 4,541
- DENSO CORPORATION 3,711
- WEICHAI POWER COMPANY 3,486
- SAFRAN AIRCRAFT ENGINES FR 3,249