PlainPatent

CPC technology class · H01

H01H - Electric Switches

Electric switches; relays; selectors; emergency protective devices. 14,753 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

14,753
US patents granted
H01
Parent CPC class
20
Active assignees
-4%
5-yr velocity

The verdict

Electric Switches ranks #126 of 670 CPC technology areas - 14,753 US patents granted since 2015, with filing down 4% over five years.

#126
of 670 CPC technology areas
14,753
US patents granted, 2015–2025
Eaton Intelligent Pow…
leading assignee (549)
-4%
filing velocity, last 5 yrs
Top assignee: Eaton Intelligent Power Limited (549 patents)

CPC subclass H01H - ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES - covers 14,753 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 H01H is shaped by 20 distinct companies actively filing in this space. Eaton Intelligent Power Limited leads with 549 patents, followed by Siemens Aktiengesellschaft at 362 grants and ABB Schweiz Ag at 349.

Filing activity in H01H is down 4% 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 H01H innovation accelerating?

US utility-patent grants per year in H01H, 2015–2025 - recent five years are down 4% versus 2015–2019.

6008001,0001,2001,4001,6001,800 20152016201720182019202020212022202320242025 739

Who leads H01H?

The 12 most active assignees in ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES - wider bars mean more grants

patents

What this shows Eaton Intelligent Pow… is the most active filer in H01H, holding 549 of the 14,753 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 H01H
Rank Company Patents in H01H
#1 Eaton Intelligent Power Limited 549
#2 Siemens Aktiengesellschaft 362
#3 ABB Schweiz Ag 349
#4 Omron Corporation 272
#5 Schneider Electric Industries SAS 247
#6 Primax Electronics Ltd. 218
#7 Eaton Corporation 211
#8 LSIS Co., Ltd. 207
#9 Darfon Electronics Corp. 167
#10 Littelfuse, Inc. 158
#11 Lutron Technology Company Llc 148
#12 Yazaki Corporation 145
#13 Lite-on Technology Corporation 119
#14 Hubbell Incorporated 113
#15 Rockwell Automation Technologies, Inc. 111
#16 Schneider Electric USA, Inc. 104
#17 ALPS Alpine Co., Ltd. 99
#18 Lite-on Electronics (guangzhou) Limited 99
#19 ABB Technology Ag 86
#20 Siemens Industry, Inc. 83

About This Class

CPC subclass H01H belongs to class H01.

14,753 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 H01H 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 H01H assignees by class footprint. Bubble size = patents in H01H. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 H01H assignees by class footprint. Bubble size = patents in H01H. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 5101520 0100200300400500600 Patents in H01H Avg claims / patent (company-wide) Eaton Intelligent Pow…Siemens Aktiengesells…Abb SchweizOmronSchneider Electric In…PrimaxEatonLsisDarfonLittelfuseLutron TechnologyYazakiLite-on TechnologyHubbell Incorporated
Top 14 H01H assignees by class footprint. Bubble size = patents in H01H. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class H01H?
CPC subclass H01H covers ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES. It belongs to CPC class H01 (ELECTRIC ELEMENTS), with 14,753 US utility patents granted since 2015.
How many patents have been filed in H01H?
14,753 US utility patents were granted in CPC subclass H01H between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in H01H?
Eaton Intelligent Power Limited leads H01H with 549 patents, making it the most active assignee in this technology area.
How is patent data for H01H 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 H01H 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.