PlainPatent

CPC technology class · D01

D01B - Mechanical Treatment OF Natural Fibrous OR Filamentary Ma…

Mechanical treatment of natural fibrous or filamentary material to obtain fibres of filaments, e.g. for spinning. 91 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

91
US patents granted
D01
Parent CPC class
16
Active assignees
+138%
5-yr velocity

The verdict

Mechanical Treatment OF Natural Fibrous OR Filamentary Ma… ranks #623 of 670 CPC technology areas - 91 US patents granted since 2015, with filing up 138% over five years.

#623
of 670 CPC technology areas
91
US patents granted, 2015–2025
National Agriculture…
leading assignee (8)
+138%
filing velocity, last 5 yrs
Top assignee: National Agriculture AND FOOD Research Organization (8 patents)

CPC subclass D01B - MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING - covers 91 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 D01B is shaped by 16 distinct companies actively filing in this space. National Agriculture AND FOOD Research Organization leads with 8 patents, followed by KOWA Company, Ltd. at 5 grants and C&M Baling Systems, Inc. at 5.

Filing activity in D01B is up 138% 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 D01B innovation accelerating?

US utility-patent grants per year in D01B, 2015–2025 - recent five years are up 138% versus 2015–2019.

05101520 20152016201720182019202020212022202320242025 3

Who leads D01B?

The 12 most active assignees in MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING - wider bars mean more grants

patents

What this shows National Agriculture… is the most active filer in D01B, holding 8 of the 91 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 D01B
Rank Company Patents in D01B
#1 National Agriculture AND FOOD Research Organization 8
#2 KOWA Company, Ltd. 5
#3 C&M Baling Systems, Inc. 5
#4 Domtar Paper Company, Llc 3
#5 Westrock MWV, Llc 2
#6 Canon Virginia, Inc. 1
#7 Profile Products L.l.c. 1
#8 APDN (b.v.i) Inc. 1
#9 Georama, Inc. 1
#10 Republic OF Korea(management: Rural Development Administration) 1
#11 Mercer International Inc. 1
#12 International Centre FOR Bamboo AND Rattan 1
#13 Cotton Incorporated 1
#14 Hubei Jinhanjiang Refined Cotton Co., Ltd. 1
#15 Sustainable Composites, Llc 1
#16 Genus Industries, Inc. 1

About This Class

CPC subclass D01B belongs to class D01.

91 patents were granted in this class between 2015 and 2025.

16 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 D01B 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 D01B assignees by class footprint. Bubble size = patents in D01B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 D01B assignees by class footprint. Bubble size = patents in D01B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 0246810 Patents in D01B Avg claims / patent (company-wide) National Agriculture…KowaC&M Baling SystemsDomtar PaperWestrock MwvCanon VirginiaProfile Products L L CApdn (B V I)GeoramaRepublic Of Korea(Man…Mercer InternationalInternational Centre…Cotton IncorporatedHubei Jinhanjiang Ref…
Top 14 D01B assignees by class footprint. Bubble size = patents in D01B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class D01B?
CPC subclass D01B covers MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING. It belongs to CPC class D01 (NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING), with 91 US utility patents granted since 2015.
How many patents have been filed in D01B?
91 US utility patents were granted in CPC subclass D01B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in D01B?
National Agriculture AND FOOD Research Organization leads D01B with 8 patents, making it the most active assignee in this technology area.
How is patent data for D01B 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 D01B 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.