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CPC technology class · C09

C09K - Materials FOR Miscellaneous Applications

Materials for miscellaneous applications, not provided for elsewhere. 29,124 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

29,124
US patents granted
C09
Parent CPC class
20
Active assignees
+17%
5-yr velocity

The verdict

Materials FOR Miscellaneous Applications ranks #70 of 670 CPC technology areas - 29,124 US patents granted since 2015, with filing up 17% over five years.

#70
of 670 CPC technology areas
29,124
US patents granted, 2015–2025
Samsung
leading assignee (1,766)
+17%
filing velocity, last 5 yrs
Top assignee: Samsung Electronics Co., Ltd. (1,766 patents)

CPC subclass C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - covers 29,124 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C09 (DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR). See our CPC classification guide for how the system works.

The competitive landscape in C09K is shaped by 20 distinct companies actively filing in this space. Samsung Electronics Co., Ltd. leads with 1,766 patents, followed by Saudi Arabian OIL Company at 1,118 grants and Merck Patent Gmbh at 719.

Filing activity in C09K is up 17% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is C09K innovation accelerating?

US utility-patent grants per year in C09K, 2015–2025 - recent five years are up 17% versus 2015–2019.

1,5002,0002,5003,000 20152016201720182019202020212022202320242025 1,589

Who leads C09K?

The 12 most active assignees in MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - wider bars mean more grants

patents

What this shows Samsung is the most active filer in C09K, holding 1,766 of the 29,124 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 C09K
Rank Company Patents in C09K
#1 Halliburton Energy Services, Inc. 1,465
#2 Saudi Arabian OIL Company 1,118
#3 Merck Patent Gmbh 719
#4 Universal Display Corporation 559
#5 LG CHEM, Ltd. 533
#6 Semiconductor Energy Laboratory Co., Ltd. 372
#7 Fujifilm Corporation 357
#8 Idemitsu Kosan Co., Ltd. 344
#9 Schlumberger Technology Corporation 332
#10 KING FAHD University OF Petroleum AND Minerals 246
#11 Nichia Corporation 242
#12 JNC Corporation 234
#13 BASF SE 231
#14 JNC Petrochemical Corporation 210
#15 3M Innovative Properties Company 207
#16 DIC Corporation 203
#17 Sumitomo Chemical Company, Limited 192
#18 Baker Hughes Holdings Llc 188
#19 Sharp Kabushiki Kaisha 165
#20 LG Display Co., Ltd. 161

About This Class

CPC subclass C09K belongs to class C09.

29,124 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 C09K 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 C09K assignees by class footprint. Bubble size = patents in C09K. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 C09K assignees by class footprint. Bubble size = patents in C09K. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 1214161820 0500100015002000 Patents in C09K Avg claims / patent (company-wide) Halliburton Energy Se…Saudi Arabian OilMerck PatentUniversal DisplayLg ChemSemiconductor Energy…FujifilmIdemitsu KosanSchlumberger Technolo…King Fahd University…NichiaJncBasf SeJnc Petrochemical
Top 14 C09K assignees by class footprint. Bubble size = patents in C09K. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C09K?
CPC subclass C09K covers MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE. It belongs to CPC class C09 (DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR), with 29,124 US utility patents granted since 2015.
How many patents have been filed in C09K?
29,124 US utility patents were granted in CPC subclass C09K between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C09K?
Samsung Electronics Co., Ltd. leads C09K with 1,766 patents, making it the most active assignee in this technology area.
How is patent data for C09K 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., C09) is a broad technology category. Subclasses like C09K 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.