CPC technology class · G12

G12B - Constructional Details Of Instruments

Constructional details of instruments, or comparable details of other apparatus, not otherwise provided for. 112 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

112
US patents granted: #1/1
in G12: 100.0%
G12 class share: +62%
5-yr velocity

The verdict

According to USPTO PatentsView, Constructional Details Of Instruments ranks #620 of 670 CPC technology areas - 112 US patents granted since 2015, with recorded grant volume up 62% over five years.

#620
of 670 CPC technology areas: 112
US patents granted, 2015–2025: Yazaki
leading assignee (4): +62%
grant velocity, last 5 yrs

How G12B's grant cadence moved

Between 2020–2024, G12B recorded 60 grants versus 37 in 2015–2019 (+62% equal-window velocity). Across complete years, output peaked in 2020 at 16 grants and bottomed in 2017 at 4 (+300% peak-over-trough). Lead assignee Dunan Sensing LLC holds 3.6% of the class ; the top three share 7.1%.

Leaderboard read

G12B concentration, lead at 3.6%

Dunan Sensing LLC leads this historical grant record at 3.6% of G12B - foreign corporation assignees hold 60% of class grants (12 of 20). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 3.6%
Top three share: 7.1%
Lead over #2: 2

G12B grants by year, peak 2020 (16)

US utility-patent grants per year in G12B, 2015–2025 - recent five years are up 62% versus 2015–2019.

Dunan Sensing

4
Cambridge Mechatronics

2
Continental Autonomous…

2
Archi Enterprises

2
Physik Instrumente…

1
Nippon Thompson

1
Qingdao Haier Smart…

1
Citizen Finedevice

1
Helmut Fischer…

1
Everactive

1
Preciflex

1
Litemax

1

What this shows Yazaki is the most active filer in G12B, holding 4 of the 112 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 G12B
Rank	Company	Patents in G12B
#1	Dunan Sensing LLC	4
#2	Cambridge Mechatronics Limited	2
#3	Continental Autonomous Mobility US, LLC	2
#4	Archi Enterprises Inc.	2
#5	Physik Instrumente (PI) GMBH & Co. KG	1
#6	Nippon Thompson Co., Ltd.	1
#7	Qingdao Haier Smart Technology R&D Co., Ltd.	1
#8	Citizen Finedevice Co., Ltd.	1
#9	Helmut Fischer GMBH Institut FÜR Elektronik UND Messtechnik	1
#10	Everactive, Inc.	1
#11	Preciflex SA	1
#12	Litemax Electronics Inc.	1
#13	N.S. International, Ltd.	1
#14	Helmholtz-zentrum Berlin FÜR Materialien UND Energie GMBH	1

Footprint here vs. claim strategy

Each dot is a leading G12B 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 G12B assignees by class footprint. Bubble size = patents in G12B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about G12B

Which company holds the most patents in G12B?

Yazaki Corporation leads G12B with 4 patents (3.6% of the subclass). By PatentsView assignee type, foreign corporations account for 60% of class grants.

What to do with this data

G12B in context - here's where to go next.

Dunan Sensing LLC leads G12B with 4 grants in this class. See full portfolio
G12B ranks #620 of 670 by grant volume among all tracked CPC technology areas. See the ranking

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

Methodology - G12B figures are USPTO PatentsView granted-utility totals for this subclass (112 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.