PlainPatent

CPC technology class · D02

D02G - Crimping OR Curling Fibres

Crimping or curling fibres, filaments, threads, or yarns; yarns or threads. 1,439 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

1,439
US patents granted
D02
Parent CPC class
20
Active assignees
+63%
5-yr velocity

The verdict

Crimping OR Curling Fibres ranks #410 of 670 CPC technology areas - 1,439 US patents granted since 2015, with filing up 63% over five years.

#410
of 670 CPC technology areas
1,439
US patents granted, 2015–2025
The Board of Regents…
leading assignee (30)
+63%
filing velocity, last 5 yrs
Top assignee: The Board Of Regents Of The University Of Texas System (30 patents)

CPC subclass D02G - CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS - covers 1,439 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 D02G is shaped by 20 distinct companies actively filing in this space. The Board Of Regents Of The University Of Texas System leads with 30 patents, followed by Sanko Tekstil Isletmeleri San. Ve Tic. A.s. at 18 grants and Aladdin Manufacturing Corporation at 17.

Filing activity in D02G is up 63% 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 D02G innovation accelerating?

US utility-patent grants per year in D02G, 2015–2025 - recent five years are up 63% versus 2015–2019.

50100150200 20152016201720182019202020212022202320242025 112

Who leads D02G?

The 12 most active assignees in CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS - wider bars mean more grants

patents

What this shows The Board of Regents… is the most active filer in D02G, holding 30 of the 1,439 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 D02G
Rank Company Patents in D02G
#1 Kolon Industries, Inc. 28
#2 Sanko Tekstil Isletmeleri San. Ve Tic. A.s. 18
#3 Aladdin Manufacturing Corporation 17
#4 Oerlikon Textile Gmbh & Co. KG 16
#5 Invista North America S.a.r.l. 14
#6 Tepha, Inc. 13
#7 Southern Mills, Inc. 13
#8 Nv Bekaert Sa 12
#9 Lintec OF America, Inc. 12
#10 Welspun India Limited 11
#11 Mitsuboshi Belting Ltd. 9
#12 Teijin Frontier Co., Ltd. 8
#13 Kordsa Teknik Tekstil Anonim Sirketi 8
#14 Spinnova OY 8
#15 Bando Chemical Industries, Ltd. 7
#16 Federal-mogul Powertrain Llc 7
#17 Dupont Safety & Construction, Inc. 7
#18 Continental Reifen Deutschland Gmbh 6
#19 Jiangsu Hengli Chemical Fibre Co., Ltd. 6
#20 Teijin Aramid B.v. 5

About This Class

CPC subclass D02G belongs to class D02.

1,439 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 D02G 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 D02G assignees by class footprint. Bubble size = patents in D02G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 D02G assignees by class footprint. Bubble size = patents in D02G. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 51015202530 Patents in D02G Avg claims / patent (company-wide) Kolon IndustriesSanko Tekstil Isletme…Aladdin ManufacturingOerlikon Textile & KgInvista North America…TephaSouthern MillsBekaertLintec Of AmericaWelspun IndiaMitsuboshi BeltingTeijin FrontierKordsa Teknik Tekstil…Spinnova Oy
Top 14 D02G assignees by class footprint. Bubble size = patents in D02G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class D02G?
CPC subclass D02G covers CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS. It belongs to CPC class D02 (YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING), with 1,439 US utility patents granted since 2015.
How many patents have been filed in D02G?
1,439 US utility patents were granted in CPC subclass D02G between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in D02G?
The Board Of Regents Of The University Of Texas System leads D02G with 30 patents, making it the most active assignee in this technology area.
How is patent data for D02G 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 D02G 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.