PlainPatent

CPC technology class · F01

F01P - Cooling OF Machines OR Engines IN General

Cooling of machines or engines in general; cooling of internal-combustion engines. 4,129 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

4,129
US patents granted
F01
Parent CPC class
20
Active assignees
+9%
5-yr velocity

The verdict

Cooling OF Machines OR Engines IN General ranks #268 of 670 CPC technology areas - 4,129 US patents granted since 2015, with filing up 9% over five years.

#268
of 670 CPC technology areas
4,129
US patents granted, 2015–2025
Hyundai Motor
leading assignee (311)
+9%
filing velocity, last 5 yrs
Top assignee: Hyundai Motor Company (311 patents)

CPC subclass F01P - COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES - covers 4,129 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class F01 (MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES). See our CPC classification guide for how the system works.

The competitive landscape in F01P is shaped by 20 distinct companies actively filing in this space. Hyundai Motor Company leads with 311 patents, followed by Cummins Inc. at 48 grants and Hanon Systems at 43.

Filing activity in F01P is up 9% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is F01P innovation accelerating?

US utility-patent grants per year in F01P, 2015–2025 - recent five years are up 9% versus 2015–2019.

100200300400500600 20152016201720182019202020212022202320242025 176

Who leads F01P?

The 12 most active assignees in COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES - wider bars mean more grants

patents

What this shows Hyundai Motor is the most active filer in F01P, holding 311 of the 4,129 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 F01P
Rank Company Patents in F01P
#1 Mahle International Gmbh 57
#2 Cummins Inc. 48
#3 Hanon Systems 43
#4 Kubota Corporation 41
#5 Brunswick Corporation 36
#6 Yanmar Holdings Co., Ltd. 33
#7 Nippon Thermostat Co., Ltd. 28
#8 Valeo Systemes Thermiques 27
#9 Scania CV AB 20
#10 Pierburg PUMP Technology Gmbh 20
#11 AVL LIST Gmbh 17
#12 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft 17
#13 Briggs & Stratton, Llc 15
#14 Yanmar Power Technology Co., Ltd. 15
#15 Yamada Manufacturing Co., Ltd. 15
#16 Mikuni Corporation 14
#17 MAN Truck &bus Ag 13
#18 Achates Power, Inc. 13
#19 Horton, Inc. 13
#20 Kobelco Construction Machinery Co., Ltd 10

About This Class

CPC subclass F01P belongs to class F01.

4,129 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 F01P 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 F01P assignees by class footprint. Bubble size = patents in F01P. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 F01P assignees by class footprint. Bubble size = patents in F01P. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 5101520 102030405060 Patents in F01P Avg claims / patent (company-wide) Mahle InternationalCumminsHanon SystemsKubotaBrunswickYanmar HoldingsNippon ThermostatValeo Systemes Thermi…Scania Cv AbPierburg Pump Technol…Avl ListBrose Fahrzeugteile &…Briggs & StrattonYanmar Power Technolo…
Top 14 F01P assignees by class footprint. Bubble size = patents in F01P. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class F01P?
CPC subclass F01P covers COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES. It belongs to CPC class F01 (MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES), with 4,129 US utility patents granted since 2015.
How many patents have been filed in F01P?
4,129 US utility patents were granted in CPC subclass F01P between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in F01P?
Hyundai Motor Company leads F01P with 311 patents, making it the most active assignee in this technology area.
How is patent data for F01P 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., F01) is a broad technology category. Subclasses like F01P 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.