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CPC technology class · B60

B60M - Power Supply Lines

Power supply lines, and devices along rails, for electrically- propelled vehicles. 559 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

559
US patents granted
B60
Parent CPC class
20
Active assignees
-3%
5-yr velocity

The verdict

Power Supply Lines ranks #528 of 670 CPC technology areas - 559 US patents granted since 2015, with filing down 3% over five years.

#528
of 670 CPC technology areas
559
US patents granted, 2015–2025
Mitsubishi Electric
leading assignee (27)
-3%
filing velocity, last 5 yrs
Top assignee: Mitsubishi Electric Corporation (27 patents)

CPC subclass B60M - POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES - covers 559 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B60 (VEHICLES IN GENERAL). See our CPC classification guide for how the system works.

The competitive landscape in B60M is shaped by 20 distinct companies actively filing in this space. Mitsubishi Electric Corporation leads with 27 patents, followed by Bombardier Transportation Gmbh at 26 grants and Proterra Ag, Inc. at 12.

Filing activity in B60M is down 3% 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 B60M innovation accelerating?

US utility-patent grants per year in B60M, 2015–2025 - recent five years are down 3% versus 2015–2019.

304050607080 20152016201720182019202020212022202320242025 35

Who leads B60M?

The 12 most active assignees in POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES - wider bars mean more grants

patents

What this shows Mitsubishi Electric is the most active filer in B60M, holding 27 of the 559 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 B60M
Rank Company Patents in B60M
#1 Alstom Transport Technologies 26
#2 Bombardier Transportation Gmbh 26
#3 Proterra Ag, Inc. 12
#4 Conductix-wampfler Gmbh 9
#5 Nimble Robotics, Inc. 7
#6 NXP Aeronautics Research, Llc 7
#7 Furrer + FREY Ag 6
#8 Southwest Jiaotong University 4
#9 Bombardier Primove Gmbh 4
#10 Konnectronix, Inc. 4
#11 Technova Inc. 4
#12 Tesmec S.p.a. 4
#13 DTI Group Limited 4
#14 AFL Telecommunications Llc 3
#15 Persimmon Technologies Corporation 3
#16 Joy MM Delaware, Inc. 3
#17 Caterpillar Global Mining Equipment Llc 3
#18 LIKO Research & Development AB 2
#19 Zodiac POOL CARE Europe 2
#20 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh 2

About This Class

CPC subclass B60M belongs to class B60.

559 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 B60M 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 B60M assignees by class footprint. Bubble size = patents in B60M. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 B60M assignees by class footprint. Bubble size = patents in B60M. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 0102030 Patents in B60M Avg claims / patent (company-wide) Alstom TransportBombardier Transporta…ProterraConductix-wampflerNimble RoboticsNxp Aeronautics Resea…Furrer + FreySouthwest Jiaotong Un…Bombardier PrimoveKonnectronixTechnovaTesmec S P ADti GroupAfl Telecommunications
Top 14 B60M assignees by class footprint. Bubble size = patents in B60M. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B60M?
CPC subclass B60M covers POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES. It belongs to CPC class B60 (VEHICLES IN GENERAL), with 559 US utility patents granted since 2015.
How many patents have been filed in B60M?
559 US utility patents were granted in CPC subclass B60M between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in B60M?
Mitsubishi Electric Corporation leads B60M with 27 patents, making it the most active assignee in this technology area.
How is patent data for B60M 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., B60) is a broad technology category. Subclasses like B60M 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.