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 grant trajectory.

Compiled by PlainPatent · May 15, 2026

19
US patents granted: #5/5
in D04: 0.3%
D04 class share: -10%
5-yr velocity

The verdict

According to USPTO PatentsView, Making Nets By Knotting Of Filamentary Material ranks #653 of 670 CPC technology areas - 19 US patents granted since 2015, with recorded grant volume down 10% over five years.

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

How D04G's grant cadence moved

Between 2020–2024, D04G recorded 9 grants versus 10 in 2015–2019 (-10% equal-window velocity). Across complete years, output peaked in 2015 at 5 grants and bottomed in 2018 at 1 (+400% peak-over-trough). Lead assignee Hampidjan hf. holds 5.3% of the class .

Leaderboard read

D04G concentration, lead at 5.3%

Hampidjan hf. leads this historical grant record at 5.3% of D04G - foreign corporation assignees hold 100% of class grants (2 of 2). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 5.3%
Top three share: N/A
Lead over #2: 0

Where D04G sits inside D04

Among 5 subclasses in D04 (BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; Non-woven Fabrics), D04G ranks #5 and holds 0.3% of the parent class's 5,966 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

D04H 3,452 D04B 1,864 D04C 584 D04D 47

D04G grants by year, peak 2015 (5)

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

Hampidjan hf

1
Nine Ip

1

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.

View data table

Top patent holders in CPC subclass D04G
Rank	Company	Patents in D04G
#1	Hampidjan hf.	1
#2	Nine IP Limited	1

Questions about D04G

Which company holds the most patents in D04G?

Smith & Nephew, Inc. leads D04G with 6 patents (5.3% of the subclass). By PatentsView assignee type, foreign corporations account for 100% of class grants.

How does D04G compare inside parent class D04?

Inside D04 (BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; Non-woven Fabrics), D04G ranks #5 of 5 subclasses by grant volume and holds 0.3% of the parent class total. The largest sibling is D04H (3,452 grants).

What to do with this data

D04G in context - here's where to go next.

Hampidjan hf. leads D04G with 1 grants in this class. See full portfolio
D04G ranks #653 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class D04, the largest sibling subclass is D04H with 3,452 grants. Explore D04H

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

Methodology - D04G figures are USPTO PatentsView granted-utility totals for this subclass (19 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.