PlainPatent

CPC technology class · F22

F22G - Superheating OF Steam

Superheating of steam. 190 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

190
US patents granted
F22
Parent CPC class
20
Active assignees
-13%
5-yr velocity

The verdict

Superheating OF Steam ranks #602 of 670 CPC technology areas - 190 US patents granted since 2015, with filing down 13% over five years.

#602
of 670 CPC technology areas
190
US patents granted, 2015–2025
General Electric
leading assignee (9)
-13%
filing velocity, last 5 yrs
Top assignee: General Electric Company (9 patents)

CPC subclass F22G - SUPERHEATING OF STEAM - covers 190 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class F22 (STEAM GENERATION). See our CPC classification guide for how the system works.

The competitive landscape in F22G is shaped by 20 distinct companies actively filing in this space. General Electric Company leads with 9 patents, followed by Tokuden Co., Ltd. at 8 grants and XDI Holdings, Llc at 7.

Filing activity in F22G is down 13% 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 F22G innovation accelerating?

US utility-patent grants per year in F22G, 2015–2025 - recent five years are down 13% versus 2015–2019.

010203040 20152016201720182019202020212022202320242025 4

Who leads F22G?

The 12 most active assignees in SUPERHEATING OF STEAM - wider bars mean more grants

patents

What this shows General Electric is the most active filer in F22G, holding 9 of the 190 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 F22G
Rank Company Patents in F22G
#1 The Babcock & Wilcox Company 9
#2 Tokuden Co., Ltd. 8
#3 XDI Holdings, Llc 7
#4 Valmet Technologies Oy 4
#5 Control Components, Inc. 4
#6 En-fab Inc. 4
#7 Sasol Technology Proprietary Limited 3
#8 Emerson Process Management Power & Water Solutions, Inc. 3
#9 Siluria Technologies, Inc. 2
#10 Netzsch Trockenmahltechnik Gmbh 2
#11 Martin Gmbh Für Umwelt- Und Energietechik 2
#12 MHI Health Devices, Inc. 2
#13 HEAT IP Holdco, Llc 2
#14 Sunshine Kaidi NEW Energy Group Co., Ltd. 2
#15 Università Degli Studi Di Udine 1
#16 SPX Flow, Inc. 1
#17 Taizhou Dajiang IND. Co. Ltd. 1
#18 Emerson Vulcan Holding Llc 1
#19 Sumitomo SHI FW Energia Oy 1
#20 Babcock Power Services, Inc. 1

About This Class

CPC subclass F22G belongs to class F22.

190 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 F22G 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 F22G assignees by class footprint. Bubble size = patents in F22G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 F22G assignees by class footprint. Bubble size = patents in F22G. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 51015202530 0246810 Patents in F22G Avg claims / patent (company-wide) The Babcock & WilcoxTokudenXdi HoldingsValmet OyControl ComponentsEn-fabSasol Technology Prop…Emerson Process Manag…SiluriaNetzsch Trockenmahlte…Martin für Umwelt- un…Mhi Health DevicesHeat Ip HoldcoSunshine Kaidi New En…
Top 14 F22G assignees by class footprint. Bubble size = patents in F22G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class F22G?
CPC subclass F22G covers SUPERHEATING OF STEAM. It belongs to CPC class F22 (STEAM GENERATION), with 190 US utility patents granted since 2015.
How many patents have been filed in F22G?
190 US utility patents were granted in CPC subclass F22G between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in F22G?
General Electric Company leads F22G with 9 patents, making it the most active assignee in this technology area.
How is patent data for F22G 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., F22) is a broad technology category. Subclasses like F22G 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.