PlainPatent

CPC technology class · D02

D02J - Finishing OR Dressing OF Filaments

Finishing or dressing of filaments, yarns, threads, cords, ropes or the like. 369 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

369
US patents granted
D02
Parent CPC class
20
Active assignees
+29%
5-yr velocity

The verdict

Finishing OR Dressing OF Filaments ranks #569 of 670 CPC technology areas - 369 US patents granted since 2015, with filing up 29% over five years.

#569
of 670 CPC technology areas
369
US patents granted, 2015–2025
Toray Industries
leading assignee (21)
+29%
filing velocity, last 5 yrs
Top assignee: Toray Industries, Inc. (21 patents)

CPC subclass D02J - FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE - covers 369 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class D02 (YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING). See our CPC classification guide for how the system works.

The competitive landscape in D02J is shaped by 20 distinct companies actively filing in this space. Toray Industries, Inc. leads with 21 patents, followed by Natural Fiber Welding, Inc. at 6 grants and Jiangsu Hengli Chemical Fibre Co., Ltd. at 5.

Filing activity in D02J is up 29% 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 D02J innovation accelerating?

US utility-patent grants per year in D02J, 2015–2025 - recent five years are up 29% versus 2015–2019.

2530354045 20152016201720182019202020212022202320242025 26

Who leads D02J?

The 12 most active assignees in FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE - wider bars mean more grants

patents

What this shows Toray Industries is the most active filer in D02J, holding 21 of the 369 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 D02J
Rank Company Patents in D02J
#1 Oerlikon Textile Gmbh & Co. KG 16
#2 Natural Fiber Welding, Inc. 6
#3 Jiangsu Hengli Chemical Fibre Co., Ltd. 5
#4 Continental Structural Plastics, Inc. 4
#5 ES Fibervisions Co., Ltd. 4
#6 Donghua University 4
#7 Eisenmann SE 3
#8 Eisenmann Gmbh 3
#9 Spiber Inc. 3
#10 Domtar Paper Company, Llc 3
#11 Saurer Intelligent Technology Ag 3
#12 Saurer Germany Gmbh & Co. KG 3
#13 M.a.e. S.p.a. 3
#14 Superba S.a.s. 3
#15 Cook Biotech Incorporated 2
#16 Teijin Aramid B.v. 2
#17 BOLT Threads, Inc. 2
#18 Polytex Sportbeläge Produktions-gmbh 2
#19 Fukui Prefectural Government 2
#20 Hexcel Reinforcements 2

About This Class

CPC subclass D02J belongs to class D02.

369 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 D02J 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 D02J assignees by class footprint. Bubble size = patents in D02J. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 D02J assignees by class footprint. Bubble size = patents in D02J. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 05101520 Patents in D02J Avg claims / patent (company-wide) Oerlikon Textile & KgNatural Fiber WeldingJiangsu Hengli Chemic…Continental Structura…Es FibervisionsDonghua UniversityEisenmann SeEisenmannSpiberDomtar PaperSaurer Intelligent Te…Saurer Germany & KgM A E S p ASuperba S
Top 14 D02J assignees by class footprint. Bubble size = patents in D02J. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class D02J?
CPC subclass D02J covers FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE. It belongs to CPC class D02 (YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING), with 369 US utility patents granted since 2015.
How many patents have been filed in D02J?
369 US utility patents were granted in CPC subclass D02J between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in D02J?
Toray Industries, Inc. leads D02J with 21 patents, making it the most active assignee in this technology area.
How is patent data for D02J 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., D02) is a broad technology category. Subclasses like D02J 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.