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CPC technology class · C06

C06D - Means FOR Generating Smoke OR MIST

Means for generating smoke or mist; gas-attack compositions; generation of gas for blasting or propulsion (chemical part). 164 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

164
US patents granted
C06
Parent CPC class
20
Active assignees
-47%
5-yr velocity

The verdict

Means FOR Generating Smoke OR MIST ranks #612 of 670 CPC technology areas - 164 US patents granted since 2015, with filing down 47% over five years.

#612
of 670 CPC technology areas
164
US patents granted, 2015–2025
Tk Holdings
leading assignee (13)
-47%
filing velocity, last 5 yrs
Top assignee: TK Holdings, Llc (13 patents)

CPC subclass C06D - MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART) - covers 164 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C06 (EXPLOSIVES; MATCHES). See our CPC classification guide for how the system works.

The competitive landscape in C06D is shaped by 20 distinct companies actively filing in this space. TK Holdings, Llc leads with 13 patents, followed by Autoliv ASP, Inc. at 8 grants and TRW Airbag Systems Gmbh at 6.

Filing activity in C06D is down 47% over the past five years versus 2015-2019, a notable slowdown that may signal a maturing field. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is C06D innovation accelerating?

US utility-patent grants per year in C06D, 2015–2025 - recent five years are down 47% versus 2015–2019.

0510152025 20152016201720182019202020212022202320242025 4

Who leads C06D?

The 12 most active assignees in MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART) - wider bars mean more grants

patents

What this shows Tk Holdings is the most active filer in C06D, holding 13 of the 164 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 C06D
Rank Company Patents in C06D
#1 TK Holdings, Llc 13
#2 Autoliv ASP, Inc. 8
#3 TRW Airbag Systems Gmbh 6
#4 Bastion Technologies, Inc. 5
#5 Skunklock, Inc. 4
#6 Cirrus Outdoors, Llc 4
#7 Herakles 3
#8 Aerojet Rocketdyne, Inc. 3
#9 Innospec Limited 3
#10 Robertson Intellectual Properties, Llc 3
#11 TRW Automotive Gmbh 2
#12 Takata Corporation 2
#13 Safariland, Llc 2
#14 Terves, Llc 2
#15 RUAG Ammotec Gmbh 2
#16 Nexter Munitions 2
#17 Otto Torpedo Company 2
#18 Rheinmetall Waffe Munition Gmbh 1
#19 BAE Systems Land & Armaments L.p. 1
#20 Arianegroup Gmbh 1

About This Class

CPC subclass C06D belongs to class C06.

164 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 C06D 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 C06D assignees by class footprint. Bubble size = patents in C06D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 C06D assignees by class footprint. Bubble size = patents in C06D. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 010203040 051015 Patents in C06D Avg claims / patent (company-wide) Tk HoldingsAutoliv AspTrw Airbag SystemsBastionSkunklockCirrus OutdoorsHeraklesAerojet RocketdyneInnospecRobertson Intellectua…Trw AutomotiveTakataSafarilandTerves
Top 14 C06D assignees by class footprint. Bubble size = patents in C06D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C06D?
CPC subclass C06D covers MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART). It belongs to CPC class C06 (EXPLOSIVES; MATCHES), with 164 US utility patents granted since 2015.
How many patents have been filed in C06D?
164 US utility patents were granted in CPC subclass C06D between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C06D?
TK Holdings, Llc leads C06D with 13 patents, making it the most active assignee in this technology area.
How is patent data for C06D 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., C06) is a broad technology category. Subclasses like C06D 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.