CPC technology class · G08

G08B - Signalling Or Calling Systems

Signalling or calling systems; order telegraphs; alarm systems. 25,403 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

25,403
US patents granted: #2/3
in G08: 43.1%
G08 class share: +14%
5-yr velocity

The verdict

According to USPTO PatentsView, Signalling Or Calling Systems ranks #79 of 670 CPC technology areas - 25,403 US patents granted since 2015, with recorded grant volume up 14% over five years.

#79
of 670 CPC technology areas: 25,403
US patents granted, 2015–2025: Google
leading assignee (654): +14%
grant velocity, last 5 yrs

How G08B's grant cadence moved

Between 2020–2024, G08B recorded 12,444 grants versus 10,935 in 2015–2019 (+14% equal-window velocity). Across complete years, output peaked in 2020 at 2,966 grants and bottomed in 2015 at 1,461 (+103% peak-over-trough). Lead assignee Google LLC holds 2.6% of the class ; the top three share 6.5%.

Leaderboard read

G08B concentration, lead at 2.6%

Google LLC leads this historical grant record at 2.6% of G08B - us corporation assignees hold 75% of class grants (10,776 of 14,344). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 2.6%
Top three share: 6.5%
Lead over #2: 64

Where G08B sits inside G08

Among 3 subclasses in G08 (Signalling), G08B ranks #2 and holds 43.1% of the parent class's 58,909 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

G08G 27,080 G08C 6,426

Rising assignees active in G08B

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 · 6 in G08B
#2 NCR Voyix Corporation 82x 0 → 82 company-wide · 5 in G08B
#3 Hanwha Vision Co., Ltd. 37x 0 → 37 company-wide · 8 in G08B
#4 Chengdu Qinchuan IOT Technology Co., Ltd. 20x 9 → 179 company-wide · 21 in G08B
#5 AAC Acoustic Technologies (Shanghai) Co., Ltd. 18x 0 → 18 company-wide · 7 in G08B

G08B grants by year, peak 2020 (2,966)

US utility-patent grants per year in G08B, 2015–2025 - recent five years are up 14% versus 2015–2019.

Google

654
Honeywell Internationa…

590
Alarm com Incorporated

401
State Farm Mutual…

388
Nec

322
Amazon

284
Immersion

266
Tyco Fire & Security

261
Carrier

234
Sensormatic

216
Vivint

166
Invue Security…

164

What this shows Google is the most active filer in G08B, holding 654 of the 25,403 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 G08B
Rank	Company	Patents in G08B
#1	Google LLC	654
#2	Honeywell International Inc.	590
#3	Alarm.com Incorporated	401
#4	State Farm Mutual Automobile Insurance Company	388
#5	NEC Corporation	322
#6	Amazon Technologies, Inc.	284
#7	Immersion, LLC	266
#8	Tyco Fire & Security GMBH	261
#9	Carrier Corporation	234
#10	Sensormatic Electronics, LLC	216
#11	Vivint LLC	166
#12	InVue Security Products Inc.	164
#13	Motorola Solutions, Inc.	149
#14	AT&T Intellectual Property I, L.P.	146
#15	iControl Networks, Inc.	118
#16	Hill-Rom Services, Inc.	106
#17	Comcast Cable Communications, LLC	98
#18	Tile, Inc.	95
#19	Axis AB	89
#20	United Services Automobile Association (USAA)	87

Footprint here vs. claim strategy

Each dot is a leading G08B 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 G08B assignees by class footprint. Bubble size = patents in G08B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near G08B's 25,403-grant footprint

Nationwide nearest neighbors for G08B (#79 of 670 by volume ; lead share 2.6%) - not the G08 parent-class siblings above.

Nearest by grant volume

H10H 25,379 A61L 25,308 F01D 24,492 H01J 24,482

Nearest by lead-assignee share

A45F 2.6% G01F 2.6% G01C 2.6% F21V 2.6%

Questions about G08B

Which company holds the most patents in G08B?

Google LLC leads G08B with 654 patents (2.6% of the subclass). By PatentsView assignee type, us corporations account for 75% of class grants.

Which G08B assignees grew fastest recently?

Among assignees with ≥5 grants in G08B, Kyndryl, Inc. shows the highest company-wide grant multiple (478x: 0 grants in 2019–2021 → 478 in 2022–2024) while holding 6 patents in this subclass. Growth is company-wide, not class-only.

How does G08B compare inside parent class G08?

Inside G08 (Signalling), G08B ranks #2 of 3 subclasses by grant volume and holds 43.1% of the parent class total. The largest sibling is G08G (27,080 grants).

What to do with this data

G08B in context - here's where to go next.

Google LLC leads G08B with 654 grants in this class. See full portfolio
G08B ranks #79 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class G08, the largest sibling subclass is G08G with 27,080 grants. Explore G08G

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

Methodology - G08B figures are USPTO PatentsView granted-utility totals for this subclass (25,403 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.