CPC technology class · G05

G05B - Control Or Regulating Systems In General

Control or regulating systems in general; functional elements of such systems; monitoring or testing arrangements for such systems or elements. 46,942 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

46,942
US patents granted: #1/4
in G05: 49.0%
G05 class share: +50%
5-yr velocity

The verdict

According to USPTO PatentsView, Control Or Regulating Systems In General ranks #37 of 670 CPC technology areas - 46,942 US patents granted since 2015, with recorded grant volume up 50% over five years.

#37
of 670 CPC technology areas: 46,942
US patents granted, 2015–2025: Fanuc
leading assignee (1,835): +50%
grant velocity, last 5 yrs

How G05B's grant cadence moved

Between 2020–2024, G05B recorded 25,186 grants versus 16,824 in 2015–2019 (+50% equal-window velocity). Across complete years, output peaked in 2020 at 5,270 grants and bottomed in 2015 at 2,060 (+156% peak-over-trough). Lead assignee Fanuc Corporation holds 3.9% of the class ; the top three share 7.7%.

Leaderboard read

G05B concentration, lead at 3.9%

Fanuc Corporation leads this historical grant record at 3.9% of G05B - us corporation assignees hold 53% of class grants (16,706 of 31,500). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 3.9%
Top three share: 7.7%
Lead over #2: 881

Where G05B sits inside G05

Among 4 subclasses in G05 (CONTROLLING; Regulating), G05B ranks #1 and holds 49.0% 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.

G05D 37,264 G05F 8,553 G05G 2,952

Rising assignees active in G05B

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 Kyndryl, Inc. 478x 0 → 478 company-wide · 12 in G05B
#2 Inspur Suzhou Intelligent Technology Co., Ltd. 217x 0 → 217 company-wide · 5 in G05B
#3 Berkshire Grey Operating Company, Inc. 124x 0 → 124 company-wide · 57 in G05B
#4 Doosan Enerbility Co., Ltd. 121x 0 → 121 company-wide · 7 in G05B
#5 Hitachi Energy Ltd 120x 0 → 120 company-wide · 13 in G05B

G05B grants by year, peak 2020 (5,270)

US utility-patent grants per year in G05B, 2015–2025 - recent five years are up 50% versus 2015–2019.

Fanuc

1,835
Siemens Aktiengesellsc…

954
Rockwell Automation

837
Mitsubishi Electric

731
General Electric

632
Honeywell Internationa…

629
Omron

590
The Boeing

472
Google

423
Abb Schweiz

399
Johnson Controls…

390
Fisher-rosemount…

331

What this shows Fanuc is the most active filer in G05B, holding 1,835 of the 46,942 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 G05B
Rank	Company	Patents in G05B
#1	Fanuc Corporation	1,835
#2	Siemens Aktiengesellschaft	954
#3	Rockwell Automation Technologies, Inc.	837
#4	Mitsubishi Electric Corporation	731
#5	General Electric Company	632
#6	Honeywell International Inc.	629
#7	Omron Corporation	590
#8	The Boeing Company	472
#9	Google LLC	423
#10	ABB Schweiz AG	399
#11	Johnson Controls Technology Company	390
#12	Fisher-rosemount Systems, Inc.	331
#13	Amazon Technologies, Inc.	300
#14	Johnson Controls Tyco IP Holdings LLP	297
#15	Hitachi, Ltd.	276
#16	Yokogawa Electric Corporation	258
#17	X Development LLC	250
#18	Applied Materials, Inc.	238
#19	State Farm Mutual Automobile Insurance Company	213
#20	Sonos, Inc.	207

Footprint here vs. claim strategy

Each dot is a leading G05B 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 G05B assignees by class footprint. Bubble size = patents in G05B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near G05B's 46,942-grant footprint

Nationwide nearest neighbors for G05B (#37 of 670 by volume ; lead share 3.9%) - not the G05 parent-class siblings above.

Nearest by grant volume

Y02D 45,676 H04M 49,631 H02J 49,883 B01D 43,096

Nearest by lead-assignee share

B60G 3.9% F41C 3.9% E01H 3.9% B66C 3.9%

Questions about G05B

Which company holds the most patents in G05B?

Fanuc Corporation leads G05B with 1,835 patents (3.9% of the subclass). By PatentsView assignee type, us corporations account for 53% of class grants.

Which G05B assignees grew fastest recently?

Among assignees with ≥5 grants in G05B, Kyndryl, Inc. shows the highest company-wide grant multiple (478x: 0 grants in 2019–2021 → 478 in 2022–2024) while holding 12 patents in this subclass. Growth is company-wide, not class-only.

How does G05B compare inside parent class G05?

Inside G05 (CONTROLLING; Regulating), G05B ranks #1 of 4 subclasses by grant volume and holds 49.0% of the parent class total. The largest sibling is G05D (37,264 grants).

What to do with this data

G05B in context - here's where to go next.

Fanuc Corporation leads G05B with 1,835 grants in this class. See full portfolio
G05B ranks #37 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class G05, the largest sibling subclass is G05D with 37,264 grants. Explore G05D

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

Methodology - G05B figures are USPTO PatentsView granted-utility totals for this subclass (46,942 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.