CPC technology class · H03

H03G - Control Of Amplification

Control of amplification. 5,213 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

5,213
US patents granted: #6/10
in H03: 5.5%
H03 class share: -32%
5-yr velocity

The verdict

According to USPTO PatentsView, Control Of Amplification ranks #249 of 670 CPC technology areas - 5,213 US patents granted since 2015, with recorded grant volume down 32% over five years.

#249
of 670 CPC technology areas: 5,213
US patents granted, 2015–2025: Sonos
leading assignee (290): -32%
grant velocity, last 5 yrs

How H03G's grant cadence moved

Between 2020–2024, H03G recorded 1,977 grants versus 2,891 in 2015–2019 (-32% equal-window velocity). Across complete years, output peaked in 2019 at 639 grants and bottomed in 2024 at 307 (+108% peak-over-trough). Lead assignee Sonos, Inc. holds 5.6% of the class ; the top three share 11.7%.

Leaderboard read

H03G concentration, lead at 5.6%

Sonos, Inc. leads this historical grant record at 5.6% of H03G - us corporation assignees hold 71% of class grants (1,821 of 2,562). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 5.6%
Top three share: 11.7%
Lead over #2: 121

Where H03G sits inside H03

Among 10 subclasses in H03 (Electronic Circuitry), H03G ranks #6 and holds 5.5% 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 H03H 11,825 H03L 6,701 H03B 3,110 H03D 1,165 H03J 659

Rising assignees active in H03G

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 Zoom Video Communications, Inc. 29x 13 → 380 company-wide · 5 in H03G
#2 Elite Semiconductor Microelectronics Technology Inc. 8.50x 4 → 34 company-wide · 5 in H03G
#3 Lake Shore Cryotronics, Inc. 6.00x 0 → 6 company-wide · 6 in H03G
#4 Lansus Technologies Inc. 6.00x 1 → 6 company-wide · 5 in H03G
#5 That Corporation 4.00x 1 → 4 company-wide · 7 in H03G

H03G grants by year, peak 2019 (639)

US utility-patent grants per year in H03G, 2015–2025 - recent five years are down 32% versus 2015–2019.

Sonos

290
Dolby Laboratories…

169
Skyworks Solutions

150
Cirrus Logic

133
Bose

74
Dolby International Ab

68
Yamaha

58
Realtek Semiconductor

56
psemi

56
Harman International…

45
Analog Devices

42
Qorvo Us

41

What this shows Sonos is the most active filer in H03G, holding 290 of the 5,213 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 H03G
Rank	Company	Patents in H03G
#1	Sonos, Inc.	290
#2	Dolby Laboratories Licensing Corporation	169
#3	Skyworks Solutions, Inc.	150
#4	Cirrus Logic, Inc.	133
#5	Bose Corporation	74
#6	Dolby International AB	68
#7	Yamaha Corporation	58
#8	Realtek Semiconductor Corp.	56
#9	pSemi Corporation	56
#10	Harman International Industries, Incorporated	45
#11	Analog Devices, Inc.	42
#12	Qorvo US, Inc.	41
#13	Voyetra Turtle Beach, Inc.	37
#14	Koss Corporation	32
#15	Inphi Corporation	29
#16	Biamp Systems, LLC	28
#17	Silicon Laboratories Inc.	26
#18	DTS, Inc.	25
#19	Bongiovi Acoustic LLC	23
#20	InvenSense, Inc.	19

Footprint here vs. claim strategy

Each dot is a leading H03G 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 H03G assignees by class footprint. Bubble size = patents in H03G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near H03G's 5,213-grant footprint

Nationwide nearest neighbors for H03G (#249 of 670 by volume ; lead share 5.6%) - not the H03 parent-class siblings above.

Nearest by grant volume

B60P 5,242 E04F 5,179 B23B 5,282 A41D 5,359

Nearest by lead-assignee share

C10B 5.6% H03D 5.6% H03M 5.5% C10N 5.5%

Questions about H03G

Which company holds the most patents in H03G?

Sonos, Inc. leads H03G with 290 patents (5.6% of the subclass). By PatentsView assignee type, us corporations account for 71% of class grants.

Which H03G assignees grew fastest recently?

Among assignees with ≥5 grants in H03G, Zoom Video Communications, Inc. shows the highest company-wide grant multiple (29x: 13 grants in 2019–2021 → 380 in 2022–2024) while holding 5 patents in this subclass. Growth is company-wide, not class-only.

How does H03G compare inside parent class H03?

Inside H03 (Electronic Circuitry), H03G ranks #6 of 10 subclasses by grant volume and holds 5.5% of the parent class total. The largest sibling is H03K (30,872 grants).

What to do with this data

H03G in context - here's where to go next.

Sonos, Inc. leads H03G with 290 grants in this class. See full portfolio
H03G ranks #249 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 - H03G figures are USPTO PatentsView granted-utility totals for this subclass (5,213 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.