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CPC technology class · D04

D04G - Making NETS BY Knotting OF Filamentary Material

Making nets by knotting of filamentary material; making knotted carpets or tapestries; knotting not otherwise provided for. 19 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

19
US patents granted
D04
Parent CPC class
2
Active assignees
-10%
5-yr velocity

The verdict

Making NETS BY Knotting OF Filamentary Material ranks #653 of 670 CPC technology areas - 19 US patents granted since 2015, with filing down 10% over five years.

#653
of 670 CPC technology areas
19
US patents granted, 2015–2025
Smith & Nephew
leading assignee (6)
-10%
filing velocity, last 5 yrs
Top assignee: Smith & Nephew, Inc. (6 patents)

CPC subclass D04G - MAKING NETS BY KNOTTING OF FILAMENTARY MATERIAL; MAKING KNOTTED CARPETS OR TAPESTRIES; KNOTTING NOT OTHERWISE PROVIDED FOR - covers 19 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class D04 (BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS). See our CPC classification guide for how the system works.

The competitive landscape in D04G is shaped by 2 distinct companies actively filing in this space. Smith & Nephew, Inc. leads with 6 patents, followed by NINE IP Limited at 1 grants.

Filing activity in D04G is down 10% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is D04G innovation accelerating?

US utility-patent grants per year in D04G, 2015–2025 - recent five years are down 10% versus 2015–2019.

0123456 201520162018201920202021202220232024 1

Who leads D04G?

The 12 most active assignees in MAKING NETS BY KNOTTING OF FILAMENTARY MATERIAL; MAKING KNOTTED CARPETS OR TAPESTRIES; KNOTTING NOT OTHERWISE PROVIDED FOR - wider bars mean more grants

patents

What this shows Smith & Nephew is the most active filer in D04G, holding 6 of the 19 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 D04G
Rank Company Patents in D04G
#1 Hampidjan Hf. 1
#2 NINE IP Limited 1

About This Class

CPC subclass D04G belongs to class D04.

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

2 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

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Frequently Asked Questions

What is CPC class D04G?
CPC subclass D04G covers MAKING NETS BY KNOTTING OF FILAMENTARY MATERIAL; MAKING KNOTTED CARPETS OR TAPESTRIES; KNOTTING NOT OTHERWISE PROVIDED FOR. It belongs to CPC class D04 (BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS), with 19 US utility patents granted since 2015.
How many patents have been filed in D04G?
19 US utility patents were granted in CPC subclass D04G between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in D04G?
Smith & Nephew, Inc. leads D04G with 6 patents, making it the most active assignee in this technology area.
How is patent data for D04G 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., D04) is a broad technology category. Subclasses like D04G 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.