IPC Main Group
F02M 25/00 Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or 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
Additional Content
Fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid Apparatus for adding secondary air to fuel-air mixture Engine-pertinent apparatus for adding exhaust gases
5 direct subcodes
Child Classifications
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- F02M 25/022 Adding fuel and water emulsion, water or steam
- F02M 25/06 adding lubricant vapours
- F02M 25/08 adding fuel vapours drawn from engine fuel reservoir
- F02M 25/1 adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone
- F02M 25/14 adding anti-knock agents, not provided for in groups
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