PlainPatent

CPC technology class · F03

F03D - WIND Motors

Wind motors. 7,370 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

7,370
US patents granted
F03
Parent CPC class
20
Active assignees
+39%
5-yr velocity

The verdict

WIND Motors ranks #202 of 670 CPC technology areas - 7,370 US patents granted since 2015, with filing up 39% over five years.

#202
of 670 CPC technology areas
7,370
US patents granted, 2015–2025
Vestas Wind Systems A…
leading assignee (1,044)
+39%
filing velocity, last 5 yrs
Top assignee: Vestas Wind Systems A/s (1,044 patents)

CPC subclass F03D - WIND MOTORS - covers 7,370 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class F03 (MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR). See our CPC classification guide for how the system works.

The competitive landscape in F03D is shaped by 20 distinct companies actively filing in this space. Vestas Wind Systems A/s leads with 1,044 patents, followed by General Electric Company at 806 grants and Siemens Gamesa Renewable Energy at 450.

Filing activity in F03D is up 39% 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 F03D innovation accelerating?

US utility-patent grants per year in F03D, 2015–2025 - recent five years are up 39% versus 2015–2019.

500600700800900 20152016201720182019202020212022202320242025 529

Who leads F03D?

The 12 most active assignees in WIND MOTORS - wider bars mean more grants

patents

What this shows Vestas Wind Systems A… is the most active filer in F03D, holding 1,044 of the 7,370 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 F03D
Rank Company Patents in F03D
#1 Vestas Wind Systems A/s 1,044
#2 General Electric Company 806
#3 Siemens Gamesa Renewable Energy 450
#4 Wobben Properties Gmbh 342
#5 Siemens Aktiengesellschaft 266
#6 General Electric Renovables Espana, S.l. 142
#7 LM WP Patent Holding A/s 94
#8 Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. 91
#9 LM WIND Power A/s 73
#10 Siemens Gamesa Renewable Energy Innovation & Technology S. L. 59
#11 Senvion SE 53
#12 ZF Friedrichshafen Ag 45
#13 Alstom Renewable Technologies 44
#14 Gamesa Innovation & Technology, S. L. 43
#15 Blade Dynamics Limited 42
#16 Rondo Energy, Inc. 41
#17 GE Infrastructure Technology Llc 40
#18 Senvion Gmbh 40
#19 NTN Corporation 38
#20 Flender Gmbh 36

About This Class

CPC subclass F03D belongs to class F03.

7,370 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 F03D 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 F03D assignees by class footprint. Bubble size = patents in F03D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 F03D assignees by class footprint. Bubble size = patents in F03D. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 1012141618 -500050010001500 Patents in F03D Avg claims / patent (company-wide) Vestas Wind Systems A…General ElectricSiemens Gamesa Renewa…Wobben PropertiesSiemens Aktiengesells…General Electric Reno…Lm Wp Patent Holding…Beijing Goldwind Scie…Lm Wind Power A/SSiemens Gamesa Renewa…Senvion SeZf FriedrichshafenAlstom RenewableGamesa Innovation & T…
Top 14 F03D assignees by class footprint. Bubble size = patents in F03D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class F03D?
CPC subclass F03D covers WIND MOTORS. It belongs to CPC class F03 (MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR), with 7,370 US utility patents granted since 2015.
How many patents have been filed in F03D?
7,370 US utility patents were granted in CPC subclass F03D between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in F03D?
Vestas Wind Systems A/s leads F03D with 1,044 patents, making it the most active assignee in this technology area.
How is patent data for F03D 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., F03) is a broad technology category. Subclasses like F03D 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.