CPC technology class · G05

G05F - Systems For Regulating Electric Or Magnetic Variables

Systems for regulating electric or magnetic variables. 8,553 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

8,553
US patents granted: #3/4
in G05: 8.9%
G05 class share: -24%
5-yr velocity

The verdict

According to USPTO PatentsView, Systems For Regulating Electric Or Magnetic Variables ranks #186 of 670 CPC technology areas - 8,553 US patents granted since 2015, with recorded grant volume down 24% over five years.

#186
of 670 CPC technology areas: 8,553
US patents granted, 2015–2025: Texas Instruments…
leading assignee (320): -24%
grant velocity, last 5 yrs

How G05F's grant cadence moved

Between 2020–2024, G05F recorded 3,392 grants versus 4,484 in 2015–2019 (-24% equal-window velocity). Across complete years, output peaked in 2019 at 1,028 grants and bottomed in 2024 at 499 (+106% peak-over-trough). Lead assignee Texas Instruments Incorporated holds 3.7% of the class ; the top three share 7.0%.

Leaderboard read

G05F concentration, lead at 3.7%

Texas Instruments Incorporated leads this historical grant record at 3.7% of G05F - foreign corporation assignees hold 55% of class grants (2,364 of 4,320). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 3.7%
Top three share: 7.0%
Lead over #2: 173

Where G05F sits inside G05

Among 4 subclasses in G05 (CONTROLLING; Regulating), G05F ranks #3 and holds 8.9% of the parent class's 95,711 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

G05B 46,942 G05D 37,264 G05G 2,952

Rising assignees active in G05F

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 Nisshinbo Micro Devices Inc. 13x 0 → 13 company-wide · 7 in G05F
#2 Mavagail Technology, LLC 11x 0 → 11 company-wide · 5 in G05F
#3 Sigmasense, LLC. 4.14x 64 → 265 company-wide · 15 in G05F
#4 Optivolt Labs, Inc. 4.00x 0 → 4 company-wide · 8 in G05F
#5 Sparq Systems Inc. 4.00x 2 → 8 company-wide · 5 in G05F

G05F grants by year, peak 2019 (1,028)

US utility-patent grants per year in G05F, 2015–2025 - recent five years are down 24% versus 2015–2019.

Texas Instruments…

320
Sk hynix

147
Stmicroelectronics

131
Rohm

116
Nxp B V

99
Nxp Usa

98
Dialog Semiconductor…

80
Renesas

77
Skyworks Solutions

68
Semiconductor…

63
Ablic

61
Infineon Austria

60

What this shows Texas Instruments… is the most active filer in G05F, holding 320 of the 8,553 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 G05F
Rank	Company	Patents in G05F
#1	Texas Instruments Incorporated	320
#2	SK hynix Inc.	147
#3	STMicroelectronics SA	131
#4	Rohm Co., Ltd.	116
#5	NXP B.V.	99
#6	NXP USA, Inc.	98
#7	Dialog Semiconductor (UK) Limited	80
#8	Renesas Electronics Corporation	77
#9	Skyworks Solutions, Inc.	68
#10	Semiconductor Components Industries, LLC	63
#11	Ablic Inc.	61
#12	Infineon Technologies Austria AG	60
#13	STMicroelectronics International N.V.	50
#14	pSemi Corporation	48
#15	Freeescale Semiconductor, Inc.	46
#16	Cirrus Logic, Inc.	43
#17	Causam Energy, Inc.	42
#18	Toshiba Electronic Devices & Storage Corporation	40
#19	Richtek Technology Corporation	40
#20	SII Semiconductor Corporation	40

Footprint here vs. claim strategy

Each dot is a leading G05F 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 G05F assignees by class footprint. Bubble size = patents in G05F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near G05F's 8,553-grant footprint

Nationwide nearest neighbors for G05F (#186 of 670 by volume ; lead share 3.7%) - not the G05 parent-class siblings above.

Nearest by grant volume

F16M 8,559 B23P 8,569 A47J 8,354 B01F 8,785

Nearest by lead-assignee share

Y02P 3.8% B60B 3.7% H01H 3.7% H04R 3.7%

Questions about G05F

Which company holds the most patents in G05F?

Texas Instruments Incorporated leads G05F with 320 patents (3.7% of the subclass). By PatentsView assignee type, foreign corporations account for 55% of class grants.

Which G05F assignees grew fastest recently?

Among assignees with ≥5 grants in G05F, Nisshinbo Micro Devices Inc. shows the highest company-wide grant multiple (13x: 0 grants in 2019–2021 → 13 in 2022–2024) while holding 7 patents in this subclass. Growth is company-wide, not class-only.

How does G05F compare inside parent class G05?

Inside G05 (CONTROLLING; Regulating), G05F ranks #3 of 4 subclasses by grant volume and holds 8.9% of the parent class total. The largest sibling is G05B (46,942 grants).

What to do with this data

G05F in context - here's where to go next.

Texas Instruments Incorporated leads G05F with 320 grants in this class. See full portfolio
G05F ranks #186 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class G05, the largest sibling subclass is G05B with 46,942 grants. Explore G05B

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

Methodology - G05F figures are USPTO PatentsView granted-utility totals for this subclass (8,553 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.