PlainPatent

CPC technology class · H01

H01G - Capacitors

Capacitors; capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices of the electrolytic type. 12,443 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

12,443
US patents granted
H01
Parent CPC class
20
Active assignees
+16%
5-yr velocity

The verdict

Capacitors ranks #149 of 670 CPC technology areas - 12,443 US patents granted since 2015, with filing up 16% over five years.

#149
of 670 CPC technology areas
12,443
US patents granted, 2015–2025
Samsung
leading assignee (1,528)
+16%
filing velocity, last 5 yrs
Top assignee: Samsung Electronics Co., Ltd. (1,528 patents)

CPC subclass H01G - CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE - covers 12,443 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 H01G is shaped by 20 distinct companies actively filing in this space. Samsung Electronics Co., Ltd. leads with 1,528 patents, followed by Taiyo Yuden Co., Ltd. at 432 grants and TDK Corporation at 389.

Filing activity in H01G is up 16% 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 H01G innovation accelerating?

US utility-patent grants per year in H01G, 2015–2025 - recent five years are up 16% versus 2015–2019.

8009001,0001,1001,2001,300 20152016201720182019202020212022202320242025 849

Who leads H01G?

The 12 most active assignees in CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE - wider bars mean more grants

patents

What this shows Samsung is the most active filer in H01G, holding 1,528 of the 12,443 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 H01G
Rank Company Patents in H01G
#1 Murata Manufacturing Co., Ltd. 1,247
#2 Taiyo Yuden Co., Ltd. 432
#3 TDK Corporation 389
#4 Panasonic Intellectual Property Management Co., Ltd. 378
#5 GS Yuasa International Ltd. 170
#6 AVX Corporation 145
#7 Kemet Electronics Corporation 134
#8 Greatbatch Ltd. 82
#9 Kyocera AVX Components Corporation 81
#10 Nippon Chemi-con Corporation 81
#11 Sumitomo Wiring Systems, Ltd. 74
#12 Kabushiki Kaisha Toyota Jidoshokki 74
#13 Autonetworks Technologies, Ltd. 72
#14 Pacesetter, Inc. 55
#15 TDK Electronics Ag 48
#16 Nanotek Instruments Group, Llc 47
#17 Epcos Ag 46
#18 Showa Denko K.k. 42
#19 APAQ Technology Co., Ltd. 42
#20 Asahi Kasei Kabushiki Kaisha 39

About This Class

CPC subclass H01G belongs to class H01.

12,443 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 H01G 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 H01G assignees by class footprint. Bubble size = patents in H01G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 H01G assignees by class footprint. Bubble size = patents in H01G. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 010203040 -500050010001500 Patents in H01G Avg claims / patent (company-wide) Murata ManufacturingTaiyo YudenTdkPanasonic Intellectua…Gs Yuasa InternationalAvxKemetGreatbatchKyocera Avx ComponentsNippon Chemi-conSumitomo Wiring Syste…Toyota JidoshokkiAutonetworksPacesetter
Top 14 H01G assignees by class footprint. Bubble size = patents in H01G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class H01G?
CPC subclass H01G covers CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE. It belongs to CPC class H01 (ELECTRIC ELEMENTS), with 12,443 US utility patents granted since 2015.
How many patents have been filed in H01G?
12,443 US utility patents were granted in CPC subclass H01G between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in H01G?
Samsung Electronics Co., Ltd. leads H01G with 1,528 patents, making it the most active assignee in this technology area.
How is patent data for H01G 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 H01G 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.