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CPC technology class · F24

F24T - Geothermal Collectors

Geothermal collectors; geothermal systems. 436 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

436
US patents granted
F24
Parent CPC class
20
Active assignees
+101%
5-yr velocity

The verdict

Geothermal Collectors ranks #552 of 670 CPC technology areas - 436 US patents granted since 2015, with filing up 101% over five years.

#552
of 670 CPC technology areas
436
US patents granted, 2015–2025
Ice Thermal Harvesting
leading assignee (30)
+101%
filing velocity, last 5 yrs
Top assignee: ICE Thermal Harvesting, Llc (30 patents)

CPC subclass F24T - GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS - covers 436 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class F24 (HEATING; RANGES; VENTILATING). See our CPC classification guide for how the system works.

The competitive landscape in F24T is shaped by 20 distinct companies actively filing in this space. ICE Thermal Harvesting, Llc leads with 30 patents, followed by Enhancedgeo Holdings, Llc at 17 grants and Eavor Technologies Inc. at 15.

Filing activity in F24T is up 101% 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 F24T innovation accelerating?

US utility-patent grants per year in F24T, 2015–2025 - recent five years are up 101% versus 2015–2019.

020406080 20152016201720182019202020212022202320242025 63

Who leads F24T?

The 12 most active assignees in GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS - wider bars mean more grants

patents

What this shows Ice Thermal Harvesting is the most active filer in F24T, holding 30 of the 436 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 F24T
Rank Company Patents in F24T
#1 ICE Thermal Harvesting, Llc 30
#2 Enhancedgeo Holdings, Llc 17
#3 Eavor Technologies Inc. 15
#4 Ormat Technologies Inc. 9
#5 American Piledriving Equipment, Inc. 6
#6 Hamfop Technologies Llc 6
#7 XGS Energy, Inc. 5
#8 Mitsubishi Heavy Industries Thermal Systems, Ltd. 4
#9 U.s. Farathane Corporation 4
#10 Fervo Energy Company 4
#11 Greenfire Energy Inc. 4
#12 Guangzhou Institute OF Energy Conversion, Chinese Academy OF Sciences 3
#13 E.on Sverige AB 3
#14 Blade Energy Partners Ltd. 3
#15 ERDA Master IPCO Limited 3
#16 CGG Services SAS 2
#17 Osaka CITY University 2
#18 The Kansai Electric Power Co., Inc. 2
#19 Efficient Energy Gmbh 2
#20 Nautilus TRUE, Llc 2

About This Class

CPC subclass F24T belongs to class F24.

436 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 F24T 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 F24T assignees by class footprint. Bubble size = patents in F24T. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 F24T assignees by class footprint. Bubble size = patents in F24T. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 51015202530 010203040 Patents in F24T Avg claims / patent (company-wide) Ice Thermal HarvestingEnhancedgeo HoldingsEavorOrmatAmerican Piledriving…HamfopXgs EnergyMitsubishi Heavy Indu…U S FarathaneFervo EnergyGreenfire EnergyGuangzhou Institute O…E On Sverige AbBlade Energy Partners
Top 14 F24T assignees by class footprint. Bubble size = patents in F24T. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class F24T?
CPC subclass F24T covers GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS. It belongs to CPC class F24 (HEATING; RANGES; VENTILATING), with 436 US utility patents granted since 2015.
How many patents have been filed in F24T?
436 US utility patents were granted in CPC subclass F24T between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in F24T?
ICE Thermal Harvesting, Llc leads F24T with 30 patents, making it the most active assignee in this technology area.
How is patent data for F24T 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., F24) is a broad technology category. Subclasses like F24T 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.