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CPC technology class · F05

F05B - Indexing Scheme Relating To Wind

Indexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g. 7,808 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

7,808
US patents granted
#2/3
in F05
19.9%
F05 class share
+40%
5-yr velocity

The verdict

According to USPTO PatentsView, Indexing Scheme Relating To Wind ranks #198 of 670 CPC technology areas - 7,808 US patents granted since 2015, with recorded grant volume up 40% over five years.

#198
of 670 CPC technology areas
7,808
US patents granted, 2015–2025
Vestas Wind Systems A/S
leading assignee (859)
+40%
grant velocity, last 5 yrs

How F05B's grant cadence moved

Between 2020–2024, F05B recorded 4,066 grants versus 2,911 in 2015–2019 (+40% equal-window velocity). Across complete years, output peaked in 2024 at 885 grants and bottomed in 2015 at 505 (+75% peak-over-trough). Lead assignee Vestas Wind Systems A/S holds 11.0% of the class ; the top three share 24.7%.

Leaderboard read

F05B concentration, lead at 11.0%

Vestas Wind Systems A/S leads this historical grant record at 11.0% of F05B - foreign corporation assignees hold 71% of class grants (3,549 of 5,002). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
11.0%

859 of 7,808 grants

Top three share
24.7%

of the class's recorded grants

Lead over #2
174

more grants than General Electric Company

Where F05B sits inside F05

Among 3 subclasses in F05 (Indexing Schemes Relating TO Engines OR Pumps IN Various Subclasses OF Classes F01-f04), F05B ranks #2 and holds 19.9% of the parent class's 39,173 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

F05D 30,682 F05C 683

Rising assignees active in F05B

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 GE Infrastructure Technology LLC 80x 2 → 160 company-wide · 30 in F05B
  2. #2 LM Wind Power A/S 47x 1 → 47 company-wide · 67 in F05B
  3. #3 Siemens Gamesa Renewable Energy Service GmbH 17x 0 → 17 company-wide · 13 in F05B
  4. #4 ZSM Holding, LLC 17x 0 → 17 company-wide · 8 in F05B
  5. #5 LM Wind Power International Technology II APS 17x 0 → 17 company-wide · 6 in F05B

F05B grants by year, peak 2024 (885)

US utility-patent grants per year in F05B, 2015–2025 - recent five years are up 40% versus 2015–2019.

4005006007008009001,000 20152016201720182019202020212022202320242025 562

Who leads F05B?

The 12 most active assignees in Indexing Scheme Relating TO Wind, Spring, Weight, Inertia OR Like Motors, TO Machines OR Engines FOR Liquids Covered BY Subclasses F03b, F03d AND F03g - wider bars mean more grants

patents

What this shows Vestas Wind Systems… is the most active filer in F05B, holding 859 of the 7,808 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 F05B
Rank Company Patents in F05B
#1 Vestas Wind Systems A/S 859
#2 General Electric Company 685
#3 Siemens Gamesa Renewable Energy 388
#4 Wobben Properties GmbH 261
#5 Siemens Aktiengesellschaft 184
#6 General Electric Renovables Espana, S.L. 129
#7 Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. 80
#8 LM WP Patent Holding A/S 71
#9 LM Wind Power A/S 67
#10 Lone Gull Holdings, Ltd. 47
#11 Siemens Gamesa Renewable Energy Innovation & Technology S. L. 45
#12 Alstom Renewable Technologies 42
#13 Blade Dynamics Limited 41
#14 NTN Corporation 37
#15 Senvion SE 37
#16 Gamesa Innovation & Technology, S. L. 34
#17 Senvion GmbH 34
#18 Xinjiang Goldwind Science & Technology Co., Ltd. 31
#19 Nordex Energy SE & Co. KG 31
#20 GE Infrastructure Technology LLC 30

Footprint here vs. claim strategy

Each dot is a leading F05B 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 F05B assignees by class footprint. Bubble size = patents in F05B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 81012141618 -20002004006008001000 Patents in F05B Avg claims / patent (company-wide) Vestas Wind Systems…General ElectricSiemens Gamesa…Wobben PropertiesSiemens Aktiengesellsc…General Electric…Beijing Goldwind…Lm Wp Patent Holding…Lm Wind Power A/SLone Gull HoldingsSiemens Gamesa…Alstom RenewableBlade DynamicsNtn
Top 14 F05B assignees by class footprint. Bubble size = patents in F05B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near F05B's 7,808-grant footprint

Nationwide nearest neighbors for F05B (#198 of 670 by volume ; lead share 11.0%) - not the F05 parent-class siblings above.

Nearest by grant volume

E02F 7,816 A47B 7,915 H04S 7,918 G01P 7,932

Nearest by lead-assignee share

B31F 11.0% A45D 11.0% A01C 11.0% E01C 10.9%

Questions about F05B

Which company holds the most patents in F05B?
Vestas Wind Systems A/S leads F05B with 859 patents (11.0% of the subclass). By PatentsView assignee type, foreign corporations account for 71% of class grants.
Which F05B assignees grew fastest recently?
Among assignees with ≥5 grants in F05B, GE Infrastructure Technology LLC shows the highest company-wide grant multiple (80x: 2 grants in 2019–2021 → 160 in 2022–2024) while holding 30 patents in this subclass. Growth is company-wide, not class-only.
How does F05B compare inside parent class F05?
Inside F05 (Indexing Schemes Relating TO Engines OR Pumps IN Various Subclasses OF Classes F01-f04), F05B ranks #2 of 3 subclasses by grant volume and holds 19.9% of the parent class total. The largest sibling is F05D (30,682 grants).

What to do with this data

F05B in context - here's where to go next.

  • Vestas Wind Systems A/S leads F05B with 859 grants in this class. See full portfolio
  • F05B ranks #198 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class F05, the largest sibling subclass is F05D with 30,682 grants. Explore F05D

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

Methodology - F05B figures are USPTO PatentsView granted-utility totals for this subclass (7,808 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.