IPC Main Group
F02B 31/00 Modifying induction systems for imparting a rotation to the charge in the cylinder
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:
- INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
Filing statistics
IPC F02B 31/00 belongs to the parent subclass F02B, which recorded 90,899 patent applications worldwide between 2013 and 2023. Annual filings declined from 8,536 in 2013 to 5,129 in 2023 (-40%), peaking at 9,910 applications in 2015. 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
3 direct subcodes
Child Classifications
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- F02B 31/02 in engines having inlet valves arranged eccentrically to cylinder axis
- F02B 31/04 by means within the induction channel, e.g. deflectors
- F02B 31/08 having multiple air inlets
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