PlainPatent

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 filing trajectory.

8,553
US patents granted
G05
Parent CPC class
20
Active assignees
-16%
5-yr velocity

The verdict

Systems FOR Regulating Electric OR Magnetic Variables ranks #186 of 670 CPC technology areas - 8,553 US patents granted since 2015, with filing down 16% over five years.

#186
of 670 CPC technology areas
8,553
US patents granted, 2015–2025
Texas Instruments Inc…
leading assignee (320)
-16%
filing velocity, last 5 yrs
Top assignee: Texas Instruments Incorporated (320 patents)

CPC subclass G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES - covers 8,553 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class G05 (CONTROLLING; REGULATING). See our CPC classification guide for how the system works.

The competitive landscape in G05F is shaped by 20 distinct companies actively filing in this space. Texas Instruments Incorporated leads with 320 patents, followed by SK Hynix Inc. at 147 grants and Stmicroelectronics Sa at 131.

Filing activity in G05F is down 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 G05F innovation accelerating?

US utility-patent grants per year in G05F, 2015–2025 - recent five years are down 16% versus 2015–2019.

2004006008001,0001,200 20152016201720182019202020212022202320242025 364

Who leads G05F?

The 12 most active assignees in SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES - wider bars mean more grants

patents

What this shows Texas Instruments Inc… 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.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
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

About This Class

CPC subclass G05F belongs to class G05.

8,553 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 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).

Top 14 G05F assignees by class footprint. Bubble size = patents in G05F. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 0100200300400 Patents in G05F Avg claims / patent (company-wide) Texas Instruments Inc…Sk hynixStmicroelectronicsRohmNxp B VNxp UsaDialog Semiconductor…RenesasSkyworks SolutionsSemiconductor Compone…AblicInfineon AustriaStmicroelectronics In…psemi
Top 14 G05F assignees by class footprint. Bubble size = patents in G05F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class G05F?
CPC subclass G05F covers SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES. It belongs to CPC class G05 (CONTROLLING; REGULATING), with 8,553 US utility patents granted since 2015.
How many patents have been filed in G05F?
8,553 US utility patents were granted in CPC subclass G05F between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in G05F?
Texas Instruments Incorporated leads G05F with 320 patents, making it the most active assignee in this technology area.
How is patent data for G05F 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., G05) is a broad technology category. Subclasses like G05F 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.