JET-PROPULSION PLANTS

Introduced: September 1968

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Subclass:: JET-PROPULSION PLANTS

Description

F02K covers jet propulsion systems and related powerplants that generate thrust through the expulsion of high-velocity fluid jets. This subclass encompasses gas turbine engines, ramjets, scramjets, pulse jets, and rocket motors used for aerospace and marine applications. The classification includes combustion chambers, fuel injection systems, nozzle designs, and thrust vector control mechanisms integral to jet propulsion. Adjacent classes F02C and F02D address gas turbines and fuel injection systems in non-jet applications, while F02B covers reciprocating internal combustion engines.

Filing statistics

IPC subclass F02K recorded 23,092 patent applications worldwide between 2013 and 2023. Annual filings declined from 2,237 in 2013 to 1,974 in 2023 (-12%), peaking at 2,376 applications in 2019. 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

Features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants ,

Related Keywords

JET(S) propulsion plantjet PROPULSION plantPROPULSION by reactive thrustjet propulsion plant with RAM(S) action compressionpropulsion by reactive thrustROCKETS as jet-propulsion plant

6 direct subcodes

Child Classifications

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F02K 1/00 Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
F02K 3/00 Plants including a gas turbine driving a compressor or a ducted fan
F02K 5/00 Plants including an engine, other than a gas turbine, driving a compressor or a ducted fan
F02K 7/00 Plants in which the working-fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
F02K 9/00 Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
F02K 99/00 Subject matter not provided for in other groups of this subclass

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