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CPC technology class · G21

G21J - Nuclear Explosives

Nuclear explosives; applications thereof. 5 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

5
US patents granted
G21
Parent CPC class
1
Active assignees
+300%
5-yr velocity

The verdict

Nuclear Explosives ranks #668 of 670 CPC technology areas - 5 US patents granted since 2015, with filing up 300% over five years.

#668
of 670 CPC technology areas
5
US patents granted, 2015–2025
Texas Instruments Inc…
leading assignee (1)
+300%
filing velocity, last 5 yrs
Top assignee: Texas Instruments Incorporated (1 patents)

CPC subclass G21J - NUCLEAR EXPLOSIVES; APPLICATIONS THEREOF - covers 5 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class G21 (NUCLEAR PHYSICS; NUCLEAR ENGINEERING). See our CPC classification guide for how the system works.

The competitive landscape in G21J is shaped by 1 distinct companies actively filing in this space. Texas Instruments Incorporated leads with 1 patents.

Filing activity in G21J is up 300% over the past five years versus 2015-2019, a sharp acceleration suggesting an emerging or fast-moving technology area. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is G21J innovation accelerating?

US utility-patent grants per year in G21J, 2015–2025 - recent five years are up 300% versus 2015–2019.

0.511.522.5 2017202020222025 2

Who leads G21J?

The 12 most active assignees in NUCLEAR EXPLOSIVES; APPLICATIONS THEREOF - wider bars mean more grants

patents

What this shows Texas Instruments Inc… is the most active filer in G21J, holding 1 of the 5 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 G21J
Rank Company Patents in G21J
#1 Faraday Defense Corporation 1

About This Class

CPC subclass G21J belongs to class G21.

5 patents were granted in this class between 2015 and 2025.

1 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

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Frequently Asked Questions

What is CPC class G21J?
CPC subclass G21J covers NUCLEAR EXPLOSIVES; APPLICATIONS THEREOF. It belongs to CPC class G21 (NUCLEAR PHYSICS; NUCLEAR ENGINEERING), with 5 US utility patents granted since 2015.
How many patents have been filed in G21J?
5 US utility patents were granted in CPC subclass G21J between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in G21J?
Texas Instruments Incorporated leads G21J with 1 patents, making it the most active assignee in this technology area.
How is patent data for G21J 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., G21) is a broad technology category. Subclasses like G21J 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.