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 grant trajectory.

190
US patents granted
#3/3
in F22
8.0%
F22 class share
-17%
5-yr velocity

The verdict

According to USPTO PatentsView, Superheating Of Steam ranks #602 of 670 CPC technology areas - 190 US patents granted since 2015, with recorded grant volume down 17% over five years.

#602
of 670 CPC technology areas
190
US patents granted, 2015–2025
General Electric
leading assignee (9)
-17%
grant velocity, last 5 yrs

How F22G's grant cadence moved

Between 2020–2024, F22G recorded 83 grants versus 100 in 2015–2019 (-17% equal-window velocity). Across complete years, output peaked in 2019 at 30 grants and bottomed in 2024 at 10 (+200% peak-over-trough). Lead assignee The Babcock & Wilcox Company holds 4.7% of the class ; the top three share 12.6%.

Leaderboard read

F22G concentration, lead at 4.7%

The Babcock & Wilcox Company leads this historical grant record at 4.7% of F22G - us corporation assignees hold 51% of class grants (36 of 71). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
4.7%

9 of 190 grants

Top three share
12.6%

of the class's recorded grants

Lead over #2
1

more grants than Tokuden Co., Ltd.

Where F22G sits inside F22

Among 3 subclasses in F22 (Steam Generation), F22G ranks #3 and holds 8.0% of the parent class's 2,387 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

F22B 1,959 F22D 238

Rising assignees active in F22G

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. #1 XDI Holdings, LLC 1.67x 9 → 15 company-wide · 7 in F22G
  2. #2 The Babcock & Wilcox Company 0.28x 18 → 5 company-wide · 9 in F22G
  3. #3 Tokuden Co., Ltd. 0.25x 12 → 3 company-wide · 8 in F22G

F22G grants by year, peak 2019 (30)

US utility-patent grants per year in F22G, 2015–2025 - recent five years are down 17% 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

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). 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…Emerson Process…SiluriaNetzsch Trockenmahltec…Martin für Umwelt-…Mhi Health DevicesHeat Ip HoldcoSunshine Kaidi New…
Top 14 F22G assignees by class footprint. Bubble size = patents in F22G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about F22G

Which company holds the most patents in F22G?
General Electric Company leads F22G with 9 patents (4.7% of the subclass). By PatentsView assignee type, us corporations account for 51% of class grants.
Which F22G assignees grew fastest recently?
Among assignees with ≥5 grants in F22G, XDI Holdings, LLC shows the highest company-wide grant multiple (1.67x: 9 grants in 2019–2021 → 15 in 2022–2024) while holding 7 patents in this subclass. Growth is company-wide, not class-only.
How does F22G compare inside parent class F22?
Inside F22 (Steam Generation), F22G ranks #3 of 3 subclasses by grant volume and holds 8.0% of the parent class total. The largest sibling is F22B (1,959 grants).

What to do with this data

F22G in context - here's where to go next.

  • The Babcock & Wilcox Company leads F22G with 9 grants in this class. See full portfolio
  • F22G ranks #602 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class F22, the largest sibling subclass is F22B with 1,959 grants. Explore F22B

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

Methodology - F22G figures are USPTO PatentsView granted-utility totals for this subclass (190 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.