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 grant trajectory.

Compiled by PlainPatent · May 15, 2026

11,825
US patents granted: #4/10
in H03: 12.4%
H03 class share: +4%
5-yr velocity

The verdict

According to USPTO PatentsView, Impedance Networks ranks #155 of 670 CPC technology areas - 11,825 US patents granted since 2015, with recorded grant volume up 4% over five years.

#155
of 670 CPC technology areas: 11,825
US patents granted, 2015–2025: Murata Manufacturing
leading assignee (1,775): +4%
grant velocity, last 5 yrs

How H03H's grant cadence moved

Between 2020–2024, H03H recorded 5,470 grants versus 5,238 in 2015–2019 (+4% equal-window velocity). Across complete years, output peaked in 2020 at 1,347 grants and bottomed in 2016 at 951 (+42% peak-over-trough). Lead assignee Murata Manufacturing Co., Ltd. holds 15.0% of the class ; the top three share 21.2%.

Leaderboard read

H03H concentration, lead at 15.0%

Murata Manufacturing Co., Ltd. leads this historical grant record at 15.0% of H03H - foreign corporation assignees hold 65% of class grants (4,553 of 7,015). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 15.0%
Top three share: 21.2%
Lead over #2: 1,391

Where H03H sits inside H03

Among 10 subclasses in H03 (Electronic Circuitry), H03H ranks #4 and holds 12.4% of the parent class's 95,387 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

H03K 30,872 H03M 21,338 H03F 14,014 H03L 6,701 H03G 5,213 H03B 3,110 H03D 1,165 H03J 659

Rising assignees active in H03H

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

#1 Kyocera AVX Components Corporation 100x 1 → 100 company-wide · 12 in H03H
#2 Wolfspeed, Inc. 80x 2 → 159 company-wide · 5 in H03H
#3 Rf360 Singapore Pte. Ltd. 43x 0 → 43 company-wide · 68 in H03H
#4 Shenzhen Newsonic Technologies Co., Ltd. 28x 0 → 28 company-wide · 40 in H03H
#5 Skyworks Global PTE. Ltd. 13x 2 → 25 company-wide · 40 in H03H

H03H grants by year, peak 2020 (1,347)

US utility-patent grants per year in H03H, 2015–2025 - recent five years are up 4% versus 2015–2019.

Murata Manufacturing

1,775
Skyworks Solutions

384
Seiko Epson

344
Taiyo Yuden

258
Qorvo Us

255
Tdk

149
Kyocera

124
Resonant

122
Akoustis

110
Avago General Ip…

98
psemi

87
Nihon Dempa Kogyo

78

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.

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

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).

Classes near H03H's 11,825-grant footprint

Nationwide nearest neighbors for H03H (#155 of 670 by volume ; lead share 15.0%) - not the H03 parent-class siblings above.

Nearest by grant volume

B60T 11,759 F04B 11,585 F01N 12,144 F25B 12,158

Nearest by lead-assignee share

F25J 14.8% A41B 15.2% B25D 15.3% F02N 14.7%

Questions about H03H

Which company holds the most patents in H03H?

Murata Manufacturing Co., Ltd. leads H03H with 1,775 patents (15.0% of the subclass). By PatentsView assignee type, foreign corporations account for 65% of class grants.

Which H03H assignees grew fastest recently?

Among assignees with ≥5 grants in H03H, Kyocera AVX Components Corporation shows the highest company-wide grant multiple (100x: 1 grants in 2019–2021 → 100 in 2022–2024) while holding 12 patents in this subclass. Growth is company-wide, not class-only.

How does H03H compare inside parent class H03?

Inside H03 (Electronic Circuitry), H03H ranks #4 of 10 subclasses by grant volume and holds 12.4% of the parent class total. The largest sibling is H03K (30,872 grants).

What to do with this data

H03H in context - here's where to go next.

Murata Manufacturing Co., Ltd. leads H03H with 1,775 grants in this class. See full portfolio
H03H ranks #155 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class H03, the largest sibling subclass is H03K with 30,872 grants. Explore H03K

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - H03H figures are USPTO PatentsView granted-utility totals for this subclass (11,825 grants in the tracked window).

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.