PlainPatent

CPC technology class · H03

H03H - Impedance Networks

Impedance networks, e.g. resonant circuits; resonators. 11,825 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

11,825
US patents granted
H03
Parent CPC class
20
Active assignees
+20%
5-yr velocity

The verdict

Impedance Networks ranks #155 of 670 CPC technology areas - 11,825 US patents granted since 2015, with filing up 20% over five years.

#155
of 670 CPC technology areas
11,825
US patents granted, 2015–2025
Murata Manufacturing
leading assignee (1,775)
+20%
filing velocity, last 5 yrs
Top assignee: Murata Manufacturing Co., Ltd. (1,775 patents)

CPC subclass H03H - IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS - covers 11,825 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class H03 (ELECTRONIC CIRCUITRY). See our CPC classification guide for how the system works.

The competitive landscape in H03H is shaped by 20 distinct companies actively filing in this space. Murata Manufacturing Co., Ltd. leads with 1,775 patents, followed by Skyworks Solutions, Inc. at 384 grants and Seiko Epson Corporation at 344.

Filing activity in H03H is up 20% 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 H03H innovation accelerating?

US utility-patent grants per year in H03H, 2015–2025 - recent five years are up 20% versus 2015–2019.

8001,0001,2001,400 20152016201720182019202020212022202320242025 834

Who leads H03H?

The 12 most active assignees in IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS - wider bars mean more grants

patents

What this shows Murata Manufacturing is the most active filer in H03H, holding 1,775 of the 11,825 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 H03H
Rank Company Patents in H03H
#1 Murata Manufacturing Co., Ltd. 1,775
#2 Skyworks Solutions, Inc. 384
#3 Seiko Epson Corporation 344
#4 Taiyo Yuden Co., Ltd. 258
#5 Qorvo US, Inc. 255
#6 TDK Corporation 149
#7 Kyocera Corporation 124
#8 Resonant Inc. 122
#9 Akoustis, Inc. 110
#10 Avago Technologies General IP (singapore) Pte. Ltd. 98
#11 Psemi Corporation 87
#12 Nihon Dempa Kogyo Co., Ltd. 78
#13 Rf360 Singapore Pte. Ltd. 68
#14 Realtek Semiconductor Corp. 61
#15 Witricity Corporation 61
#16 Analog Devices, Inc. 58
#17 Sitime Corporation 58
#18 Avago Technologies International Sales Pte. Limited 55
#19 Epcos Ag 54
#20 Snaptrack, Inc. 54

About This Class

CPC subclass H03H belongs to class H03.

11,825 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 H03H 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 H03H assignees by class footprint. Bubble size = patents in H03H. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 H03H assignees by class footprint. Bubble size = patents in H03H. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 -5000500100015002000 Patents in H03H Avg claims / patent (company-wide) Murata ManufacturingSkyworks SolutionsSeiko EpsonTaiyo YudenQorvo UsTdkKyoceraResonantAkoustisAvago General Ip (Sin…psemiNihon Dempa KogyoRf360 Singapore PteRealtek Semiconductor
Top 14 H03H assignees by class footprint. Bubble size = patents in H03H. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class H03H?
CPC subclass H03H covers IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS. It belongs to CPC class H03 (ELECTRONIC CIRCUITRY), with 11,825 US utility patents granted since 2015.
How many patents have been filed in H03H?
11,825 US utility patents were granted in CPC subclass H03H between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in H03H?
Murata Manufacturing Co., Ltd. leads H03H with 1,775 patents, making it the most active assignee in this technology area.
How is patent data for H03H 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., H03) is a broad technology category. Subclasses like H03H 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.