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 grant trajectory.

Compiled by PlainPatent · May 15, 2026

5,533
US patents granted: #5/9
in F02: 7.5%
F02 class share: +45%
5-yr velocity

The verdict

According to USPTO PatentsView, Jet-propulsion Plants ranks #242 of 670 CPC technology areas - 5,533 US patents granted since 2015, with recorded grant volume up 45% over five years.

#242
of 670 CPC technology areas: 5,533
US patents granted, 2015–2025: United
leading assignee (706): +45%
grant velocity, last 5 yrs

How F02K's grant cadence moved

Between 2020–2024, F02K recorded 2,917 grants versus 2,014 in 2015–2019 (+45% equal-window velocity). Across complete years, output peaked in 2020 at 659 grants and bottomed in 2016 at 276 (+139% peak-over-trough). Lead assignee United Technologies Corporation holds 12.8% of the class ; the top three share 26.5%.

Leaderboard read

F02K concentration, lead at 12.8%

United Technologies Corporation leads this historical grant record at 12.8% of F02K - us corporation assignees hold 55% of class grants (2,241 of 4,072). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 12.8%
Top three share: 26.5%
Lead over #2: 284

Where F02K sits inside F02

Among 9 subclasses in F02 (Combustion ENGINES; Hot-gas OR Combustion-product Engine Plants), F02K ranks #5 and holds 7.5% of the parent class's 73,441 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

F02D 16,949 F02C 16,237 F02M 13,937 F02B 11,001 F02N 3,467 F02P 2,762 F02F 2,743 F02G 812

Rising assignees active in F02K

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

#1 RTX Corporation 662x 0 → 662 company-wide · 189 in F02K
#2 General Electric Deutschland Holding GmbH 21x 0 → 21 company-wide · 12 in F02K
#3 Sierra Space Corporation 16x 0 → 16 company-wide · 6 in F02K
#4 Blue Origin, LLC 9.80x 5 → 49 company-wide · 21 in F02K
#5 Venus Aerospace Corp 7.00x 0 → 7 company-wide · 10 in F02K

F02K grants by year, peak 2020 (659)

US utility-patent grants per year in F02K, 2015–2025 - recent five years are up 45% versus 2015–2019.

United

706
Raytheon

422
Rolls-royce

339
Safran Aircraft…

305
Rohr

269
Pratt & Whitney Canada

196
Rtx

189
Rolls-royce North…

152
Safran Nacelles

132
Airbus Operations Sas

123
Snecma

117
Rolls-royce Deutschlan…

102

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.

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

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).

Classes near F02K's 5,533-grant footprint

Nationwide nearest neighbors for F02K (#242 of 670 by volume ; lead share 12.8%) - not the F02 parent-class siblings above.

Nearest by grant volume

E05F 5,529 B81C 5,547 B64F 5,518 B29B 5,640

Nearest by lead-assignee share

A46B 12.7% A46D 12.8% B25F 12.7% H03B 12.7%

Questions about F02K

Which company holds the most patents in F02K?

United Technologies Corporation leads F02K with 706 patents (12.8% of the subclass). By PatentsView assignee type, us corporations account for 55% of class grants.

Which F02K assignees grew fastest recently?

Among assignees with ≥5 grants in F02K, RTX Corporation shows the highest company-wide grant multiple (662x: 0 grants in 2019–2021 → 662 in 2022–2024) while holding 189 patents in this subclass. Growth is company-wide, not class-only.

How does F02K compare inside parent class F02?

Inside F02 (Combustion ENGINES; Hot-gas OR Combustion-product Engine Plants), F02K ranks #5 of 9 subclasses by grant volume and holds 7.5% of the parent class total. The largest sibling is F02D (16,949 grants).

What to do with this data

F02K in context - here's where to go next.

United Technologies Corporation leads F02K with 706 grants in this class. See full portfolio
F02K ranks #242 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class F02, the largest sibling subclass is F02D with 16,949 grants. Explore F02D

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - F02K figures are USPTO PatentsView granted-utility totals for this subclass (5,533 grants in the tracked window).

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.