PlainPatent

CPC technology class · F02

F02K - Jet-propulsion Plants

Jet-propulsion plants. 5,533 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

5,533
US patents granted
F02
Parent CPC class
20
Active assignees
+64%
5-yr velocity

The verdict

Jet-propulsion Plants ranks #242 of 670 CPC technology areas - 5,533 US patents granted since 2015, with filing up 64% over five years.

#242
of 670 CPC technology areas
5,533
US patents granted, 2015–2025
United
leading assignee (706)
+64%
filing velocity, last 5 yrs
Top assignee: United Technologies Corporation (706 patents)

CPC subclass F02K - JET-PROPULSION PLANTS - covers 5,533 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class F02 (COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS). See our CPC classification guide for how the system works.

The competitive landscape in F02K is shaped by 20 distinct companies actively filing in this space. United Technologies Corporation leads with 706 patents, followed by Raytheon Technologies Corporation at 422 grants and Rolls-royce Plc at 339.

Filing activity in F02K is up 64% over the past five years versus 2015-2019, a sharp acceleration suggesting an emerging or fast-moving technology area. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is F02K innovation accelerating?

US utility-patent grants per year in F02K, 2015–2025 - recent five years are up 64% versus 2015–2019.

200300400500600700 20152016201720182019202020212022202320242025 378

Who leads F02K?

The 12 most active assignees in JET-PROPULSION PLANTS - wider bars mean more grants

patents

What this shows United is the most active filer in F02K, holding 706 of the 5,533 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
View data table
Top patent holders in CPC subclass F02K
Rank Company Patents in F02K
#1 United Technologies Corporation 706
#2 Raytheon Technologies Corporation 422
#3 Rolls-royce Plc 339
#4 Safran Aircraft Engines 305
#5 ROHR, Inc. 269
#6 Pratt & Whitney Canada Corp. 196
#7 RTX Corporation 189
#8 Rolls-royce North American Technologies Inc. 152
#9 Safran Nacelles 132
#10 Airbus Operations SAS 123
#11 Snecma 117
#12 Rolls-royce Deutschland Ltd & Co KG 102
#13 Aircelle 94
#14 Rolls-royce Corporation 80
#15 GE AVIO S.r.l. 47
#16 Woodward, Inc. 35
#17 Arianegroup SAS 35
#18 IHI Corporation 34
#19 Aerojet Rocketdyne, Inc. 31
#20 Goodrich Actuation Systems Limited 30

About This Class

CPC subclass F02K belongs to class F02.

5,533 patents were granted in this class between 2015 and 2025.

20 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

← All Technology Classes Technology Rankings →

Footprint here vs. claim strategy

Each dot is a leading F02K assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.

Top 14 F02K assignees by class footprint. Bubble size = patents in F02K. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 F02K assignees by class footprint. Bubble size = patents in F02K. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 1012141618 0200400600800 Patents in F02K Avg claims / patent (company-wide) UnitedRaytheonRolls-royceSafran Aircraft Engin…RohrPratt & Whitney CanadaRtxRolls-royce North Ame…Safran NacellesAirbus Operations SasSnecmaRolls-royce Deutschla…AircelleRolls-royce
Top 14 F02K assignees by class footprint. Bubble size = patents in F02K. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class F02K?
CPC subclass F02K covers JET-PROPULSION PLANTS. It belongs to CPC class F02 (COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS), with 5,533 US utility patents granted since 2015.
How many patents have been filed in F02K?
5,533 US utility patents were granted in CPC subclass F02K between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in F02K?
United Technologies Corporation leads F02K with 706 patents, making it the most active assignee in this technology area.
How is patent data for F02K collected?
Patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office. It covers all US granted utility patents and assigns CPC codes based on the technology described in each patent.
What is the difference between CPC class and subclass?
A CPC class (e.g., F02) is a broad technology category. Subclasses like F02K provide finer granularity within that category. PlainPatent organizes data at the subclass level (4-character codes) for the most useful view of technology domains.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.