PlainPatent

CPC technology class · D01

D01D - Mechanical Methods OR Apparatus IN THE Manufacture OF Art…

Mechanical methods or apparatus in the manufacture of artificial filaments, threads, fibres, bristles or ribbons. 2,869 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

2,869
US patents granted
D01
Parent CPC class
20
Active assignees
+57%
5-yr velocity

The verdict

Mechanical Methods OR Apparatus IN THE Manufacture OF Art… ranks #324 of 670 CPC technology areas - 2,869 US patents granted since 2015, with filing up 57% over five years.

#324
of 670 CPC technology areas
2,869
US patents granted, 2015–2025
The Procter & Gamble
leading assignee (120)
+57%
filing velocity, last 5 yrs
Top assignee: The Procter & Gamble Company (120 patents)

CPC subclass D01D - MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS - covers 2,869 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class D01 (NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING). See our CPC classification guide for how the system works.

The competitive landscape in D01D is shaped by 20 distinct companies actively filing in this space. The Procter & Gamble Company leads with 120 patents, followed by Kimberly-clark Worldwide, Inc. at 29 grants and Lenzing Aktiengesellschaft at 28.

Filing activity in D01D is up 57% 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 D01D innovation accelerating?

US utility-patent grants per year in D01D, 2015–2025 - recent five years are up 57% versus 2015–2019.

150200250300350 20152016201720182019202020212022202320242025 218

Who leads D01D?

The 12 most active assignees in MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS - wider bars mean more grants

patents

What this shows The Procter & Gamble is the most active filer in D01D, holding 120 of the 2,869 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 D01D
Rank Company Patents in D01D
#1 Aladdin Manufacturing Corporation 40
#2 Kimberly-clark Worldwide, Inc. 29
#3 Lenzing Aktiengesellschaft 28
#4 Reifenhäuser Gmbh & Co. KG Maschinenfabrik 28
#5 Kolon Industries, Inc. 27
#6 Jiangsu Hengli Chemical Fibre Co., Ltd. 22
#7 Washington University 19
#8 Tepha, Inc. 19
#9 Oerlikon Textile Gmbh & Co. KG 19
#10 Amogreentech Co., Ltd. 17
#11 Merit Medical Systems, Inc. 16
#12 Acelon Chemicals AND Fiber Corporation 16
#13 Donaldson Company, Inc. 15
#14 Poly-med, Inc. 14
#15 University OF Central Oklahoma 14
#16 Taiwan Textile Research Institute 13
#17 Cytec Industries, Inc. 12
#18 Spiber Inc. 12
#19 Cardiac Pacemakers, Inc. 11
#20 Embody, Inc. 11

About This Class

CPC subclass D01D belongs to class D01.

2,869 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 D01D 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 D01D assignees by class footprint. Bubble size = patents in D01D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 D01D assignees by class footprint. Bubble size = patents in D01D. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 5101520 1020304050 Patents in D01D Avg claims / patent (company-wide) Aladdin ManufacturingKimberly-clark Worldw…Lenzing Aktiengesells…ReifenhÄUser & Kg Mas…Kolon IndustriesJiangsu Hengli Chemic…Washington UniversityTephaOerlikon Textile & KgAmogreentechMerit Medical SystemsAcelon Chemicals And…DonaldsonPoly-med
Top 14 D01D assignees by class footprint. Bubble size = patents in D01D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class D01D?
CPC subclass D01D covers MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS. It belongs to CPC class D01 (NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING), with 2,869 US utility patents granted since 2015.
How many patents have been filed in D01D?
2,869 US utility patents were granted in CPC subclass D01D between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in D01D?
The Procter & Gamble Company leads D01D with 120 patents, making it the most active assignee in this technology area.
How is patent data for D01D 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., D01) is a broad technology category. Subclasses like D01D 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.