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 grant trajectory.

Compiled by PlainPatent · May 15, 2026

369
US patents granted: #2/3
in D02: 20.0%
D02 class share: +12%
5-yr velocity

The verdict

According to USPTO PatentsView, Finishing Or Dressing Of Filaments ranks #569 of 670 CPC technology areas - 369 US patents granted since 2015, with recorded grant volume up 12% over five years.

#569
of 670 CPC technology areas: 369
US patents granted, 2015–2025: Toray Industries
leading assignee (21): +12%
grant velocity, last 5 yrs

How D02J's grant cadence moved

Between 2020–2024, D02J recorded 170 grants versus 152 in 2015–2019 (+12% equal-window velocity). Across complete years, output peaked in 2021 at 41 grants and bottomed in 2017 at 27 (+52% peak-over-trough). Lead assignee Oerlikon Textile GmbH & Co. KG holds 4.3% of the class ; the top three share 7.3%.

Leaderboard read

D02J concentration, lead at 4.3%

Oerlikon Textile GmbH & Co. KG leads this historical grant record at 4.3% of D02J - foreign corporation assignees hold 76% of class grants (94 of 123). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 4.3%
Top three share: 7.3%
Lead over #2: 10

Where D02J sits inside D02

Among 3 subclasses in D02 (YARNS; Mechanical Finishing OF Yarns OR ROPES; Warping OR Beaming), D02J ranks #2 and holds 20.0% of the parent class's 1,845 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

D02G 1,439 D02H 37

Rising assignees active in D02J

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

#1 Natural Fiber Welding, Inc. 2.80x 5 → 14 company-wide · 6 in D02J
#2 Oerlikon Textile GmbH & Co. KG 1.29x 7 → 9 company-wide · 16 in D02J
#3 Jiangsu Hengli Chemical Fibre Co., Ltd. 0.47x 19 → 9 company-wide · 5 in D02J

D02J grants by year, peak 2021 (41)

US utility-patent grants per year in D02J, 2015–2025 - recent five years are up 12% versus 2015–2019.

Oerlikon Textile & Kg

16
Natural Fiber Welding

6
Jiangsu Hengli…

5
Continental Structural…

4
Es Fibervisions

4
Donghua University

4
Eisenmann Se

3
Eisenmann

3
Spiber

3
Domtar Paper

3
Saurer Intelligent…

3
Saurer Germany & Kg

3

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.

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

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).

Questions about D02J

Which company holds the most patents in D02J?

Toray Industries, Inc. leads D02J with 21 patents (4.3% of the subclass). By PatentsView assignee type, foreign corporations account for 76% of class grants.

Which D02J assignees grew fastest recently?

Among assignees with ≥5 grants in D02J, Natural Fiber Welding, Inc. shows the highest company-wide grant multiple (2.80x: 5 grants in 2019–2021 → 14 in 2022–2024) while holding 6 patents in this subclass. Growth is company-wide, not class-only.

How does D02J compare inside parent class D02?

Inside D02 (YARNS; Mechanical Finishing OF Yarns OR ROPES; Warping OR Beaming), D02J ranks #2 of 3 subclasses by grant volume and holds 20.0% of the parent class total. The largest sibling is D02G (1,439 grants).

What to do with this data

D02J in context - here's where to go next.

Oerlikon Textile GmbH & Co. KG leads D02J with 16 grants in this class. See full portfolio
D02J ranks #569 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class D02, the largest sibling subclass is D02G with 1,439 grants. Explore D02G

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - D02J figures are USPTO PatentsView granted-utility totals for this subclass (369 grants in the tracked window).

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.