PlainPatent

CPC technology class · C09

C09D - Coating Compositions

Coating compositions, e.g. paints, varnishes or lacquers; filling pastes; chemical paint or ink removers; inks; correcting fluids; woodstains; pastes or solids for colouring or printing; use of materials therefor. 27,394 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

27,394
US patents granted
C09
Parent CPC class
20
Active assignees
+10%
5-yr velocity

The verdict

Coating Compositions ranks #73 of 670 CPC technology areas - 27,394 US patents granted since 2015, with filing up 10% over five years.

#73
of 670 CPC technology areas
27,394
US patents granted, 2015–2025
Seiko Epson
leading assignee (578)
+10%
filing velocity, last 5 yrs
Top assignee: Seiko Epson Corporation (578 patents)

CPC subclass C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR - covers 27,394 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 C09D is shaped by 20 distinct companies actively filing in this space. Seiko Epson Corporation leads with 578 patents, followed by DOW Global Technologies Llc at 501 grants and LG CHEM, Ltd. at 500.

Filing activity in C09D is up 10% 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 C09D innovation accelerating?

US utility-patent grants per year in C09D, 2015–2025 - recent five years are up 10% versus 2015–2019.

1,5002,0002,5003,000 20152016201720182019202020212022202320242025 1,678

Who leads C09D?

The 12 most active assignees in COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR - wider bars mean more grants

patents

What this shows Seiko Epson is the most active filer in C09D, holding 578 of the 27,394 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 C09D
Rank Company Patents in C09D
#1 Seiko Epson Corporation 578
#2 DOW Global Technologies Llc 501
#3 LG CHEM, Ltd. 500
#4 Fujifilm Corporation 471
#5 3M Innovative Properties Company 415
#6 Hewlett-packard Development Company, L.p. 386
#7 Shin-etsu Chemical Co., Ltd. 386
#8 BASF SE 383
#9 Ricoh Company, Ltd. 373
#10 Xerox Corporation 342
#11 PPG Industries Ohio, Inc. 336
#12 Rohm And Haas Company 301
#13 BASF Coatings Gmbh 209
#14 Nissan Chemical Industries, Ltd. 191
#15 Sun Chemical Corporation 173
#16 Merck Patent Gmbh 138
#17 DIC Corporation 137
#18 Daikin Industries, Ltd. 133
#19 Eastman Kodak Company 132
#20 Swimc Llc 131

About This Class

CPC subclass C09D belongs to class C09.

27,394 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 C09D 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 C09D assignees by class footprint. Bubble size = patents in C09D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 C09D assignees by class footprint. Bubble size = patents in C09D. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 5101520 100200300400500600 Patents in C09D Avg claims / patent (company-wide) Seiko EpsonDow GlobalLg ChemFujifilm3m Innovative Propert…Hewlett-packard Devel…Shin-etsu ChemicalBasf SeRicohXeroxPpg Industries OhioRohm and HaasBasf CoatingsNissan Chemical Indus…
Top 14 C09D assignees by class footprint. Bubble size = patents in C09D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C09D?
CPC subclass C09D covers COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR. 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 27,394 US utility patents granted since 2015.
How many patents have been filed in C09D?
27,394 US utility patents were granted in CPC subclass C09D between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C09D?
Seiko Epson Corporation leads C09D with 578 patents, making it the most active assignee in this technology area.
How is patent data for C09D 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 C09D 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.