CPC technology class · G01

G01M - Testing Static OR Dynamic Balance OF Machines OR Structures

Testing static or dynamic balance of machines or structures; testing of structures or apparatus, not otherwise provided for. 14,845 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

14,845
US patents granted: G01
Parent CPC class: 20
Active assignees: +35%
5-yr velocity

The verdict

Testing Static OR Dynamic Balance OF Machines OR Structures ranks #124 of 670 CPC technology areas - 14,845 US patents granted since 2015, with filing up 35% over five years.

#124
of 670 CPC technology areas: 14,845
US patents granted, 2015–2025: General Electric
leading assignee (291): +35%
filing velocity, last 5 yrs

Top assignee: General Electric Company (291 patents)

CPC subclass G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - covers 14,845 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class G01 (MEASURING; TESTING). See our CPC classification guide for how the system works.

The competitive landscape in G01M is shaped by 20 distinct companies actively filing in this space. General Electric Company leads with 291 patents, followed by Aktiebolaget SKF at 122 grants and Compagnie Generale DES Etablissements Michelin at 95.

Filing activity in G01M is up 35% 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 G01M innovation accelerating?

US utility-patent grants per year in G01M, 2015–2025 - recent five years are up 35% versus 2015–2019.

Strong Force Iot Port…

141
Aktiebolaget Skf

122
Compagnie Generale De…

95
Rolls-royce

78
Pratt & Whitney Canada

75
Meidensha

74
Nippon Telegraph And…

73
Horiba

69
Safran Aircraft Engin…

67
Kobe Steel

65
Bridgestone

58
Viavi Solutions

54

What this shows General Electric is the most active filer in G01M, holding 291 of the 14,845 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

View data table

Top patent holders in CPC subclass G01M
Rank	Company	Patents in G01M
#1	Strong Force Iot Portfolio 2016, Llc	141
#2	Aktiebolaget SKF	122
#3	Compagnie Generale DES Etablissements Michelin	95
#4	Rolls-royce Plc	78
#5	Pratt & Whitney Canada Corp.	75
#6	Meidensha Corporation	74
#7	Nippon Telegraph AND Telephone Corporation	73
#8	Horiba, Ltd.	69
#9	Safran Aircraft Engines	67
#10	KOBE Steel Ltd.	65
#11	Bridgestone Corporation	58
#12	Viavi Solutions Inc.	54
#13	Siemens Energy, Inc.	54
#14	Carl Zeiss SMT Gmbh	53
#15	AVL LIST Gmbh	50
#16	Inficon Ag	48
#17	EXFO Inc.	47
#18	Mueller International, Llc	46
#19	Dalian University Of Technology	44
#20	Pirelli TYRE S.p.a.	44

About This Class

CPC subclass G01M belongs to class G01.

14,845 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 G01M 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 G01M assignees by class footprint. Bubble size = patents in G01M. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class G01M?

CPC subclass G01M covers TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR. It belongs to CPC class G01 (MEASURING; TESTING), with 14,845 US utility patents granted since 2015.

How many patents have been filed in G01M?

14,845 US utility patents were granted in CPC subclass G01M between 2015 and 2025, based on USPTO PatentsView data.

Which company holds the most patents in G01M?

General Electric Company leads G01M with 291 patents, making it the most active assignee in this technology area.

How is patent data for G01M 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., G01) is a broad technology category. Subclasses like G01M 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.