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IPC Subclass
F02B

INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL

Introduced: September 1968

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

Description

F02B covers internal-combustion piston engines operating on the four-stroke or two-stroke cycle, including spark-ignition and compression-ignition (diesel) engines, as well as combustion engines in general. The class encompasses engine design, construction, and operational features such as cylinder arrangements, fuel injection systems, ignition mechanisms, supercharging, and cooling systems. Excluded are specific fuel supply systems (covered in F02M), engine control and fuel metering (F02D), and non-piston combustion engines like turbines (F02C).

Filing statistics

IPC subclass F02B 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

Additional Content

Gas-turbine plants Hot-gas or combustion-product positive-displacement engine plants

Related Keywords

DIESEL engines

40 direct subcodes

Child Classifications

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  • F02B 17/00 Engines characterised by means for effecting stratification of charge in cylinders

Top Applicants

Top 10 applicants by patent filingsfor class F02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. TOYOTA MOTOR CORPORATION 8,687
  2. ROBERT BOSCH DE 8,328
  3. FORD GLOBAL TECHNOLOGIES US 7,423
  4. GE (GENERAL ELECTRIC COMPANY) US 5,732
  5. UNITED TECHNOLOGIES CORPORATION (UTC) US 5,592
  6. HYUNDAI MOTOR COMPANY KR 4,699
  7. TOYOTA MOTOR CORPORATION JP 4,541
  8. DENSO CORPORATION 3,711
  9. WEICHAI POWER COMPANY 3,486
  10. SAFRAN AIRCRAFT ENGINES FR 3,249