PlainPatent

CPC technology class · H01

H01M - Processes OR Means

Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy. 63,620 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

63,620
US patents granted
H01
Parent CPC class
20
Active assignees
+42%
5-yr velocity

The verdict

Processes OR Means ranks #22 of 670 CPC technology areas - 63,620 US patents granted since 2015, with filing up 42% over five years.

#22
of 670 CPC technology areas
63,620
US patents granted, 2015–2025
Samsung
leading assignee (3,657)
+42%
filing velocity, last 5 yrs
Top assignee: Samsung Electronics Co., Ltd. (3,657 patents)

CPC subclass H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - covers 63,620 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class H01 (ELECTRIC ELEMENTS). See our CPC classification guide for how the system works.

The competitive landscape in H01M is shaped by 20 distinct companies actively filing in this space. Samsung Electronics Co., Ltd. leads with 3,657 patents, followed by Toyota Jidosha Kabushiki Kaisha at 3,097 grants and LG CHEM, Ltd. at 2,369.

Filing activity in H01M is up 42% 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 H01M innovation accelerating?

US utility-patent grants per year in H01M, 2015–2025 - recent five years are up 42% versus 2015–2019.

4,0004,5005,0005,5006,0006,500 20152016201720182019202020212022202320242025 5,044

Who leads H01M?

The 12 most active assignees in PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - wider bars mean more grants

patents

What this shows Samsung is the most active filer in H01M, holding 3,657 of the 63,620 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 H01M
Rank Company Patents in H01M
#1 Samsung Electronics Co., Ltd. 3,657
#2 Toyota Jidosha Kabushiki Kaisha 3,097
#3 LG CHEM, Ltd. 2,369
#4 LG Energy Solution, Ltd. 2,086
#5 Hyundai Motor Company 1,418
#6 Panasonic Intellectual Property Management Co., Ltd. 1,278
#7 Honda Motor Co., Ltd. 1,185
#8 Robert Bosch Gmbh 1,074
#9 GM Global Technology Operations Llc 1,029
#10 Contemporary Amperex Technology Co., Limited 863
#11 Ford Global Technologies, Llc 800
#12 KIA Motors Corporation 701
#13 Nissan Motor Co., Ltd. 661
#14 GS Yuasa International Ltd. 573
#15 Sanyo Electric Co., Ltd. 534
#16 Murata Manufacturing Co., Ltd. 512
#17 Kabushiki Kaisha Toshiba 500
#18 Semiconductor Energy Laboratory Co., Ltd. 456
#19 AUDI Ag 387
#20 Sumitomo Electric Industries, Ltd. 374

About This Class

CPC subclass H01M belongs to class H01.

63,620 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 H01M 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 H01M assignees by class footprint. Bubble size = patents in H01M. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 H01M assignees by class footprint. Bubble size = patents in H01M. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 681012141618 01000200030004000 Patents in H01M Avg claims / patent (company-wide) SamsungToyota JidoshaLg ChemLg Energy SolutionHyundai MotorPanasonic Intellectua…Honda MotorRobert BoschGm Global Technology…Contemporary Amperex…Ford GlobalKia MotorsNissan MotorGs Yuasa International
Top 14 H01M assignees by class footprint. Bubble size = patents in H01M. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class H01M?
CPC subclass H01M covers PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY. It belongs to CPC class H01 (ELECTRIC ELEMENTS), with 63,620 US utility patents granted since 2015.
How many patents have been filed in H01M?
63,620 US utility patents were granted in CPC subclass H01M between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in H01M?
Samsung Electronics Co., Ltd. leads H01M with 3,657 patents, making it the most active assignee in this technology area.
How is patent data for H01M 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., H01) is a broad technology category. Subclasses like H01M 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.