CPC technology class · D01

D01H - Spinning Or Twisting

Spinning or twisting. 375 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

375
US patents granted: #3/6
in D01: 5.0%
D01 class share: +27%
5-yr velocity

The verdict

According to USPTO PatentsView, Spinning Or Twisting ranks #566 of 670 CPC technology areas - 375 US patents granted since 2015, with recorded grant volume up 27% over five years.

#566
of 670 CPC technology areas: 375
US patents granted, 2015–2025: Maschinenfabrik Rieter
leading assignee (91): +27%
grant velocity, last 5 yrs

How tightly D01H concentrates

Maschinenfabrik Rieter AG holds 24.3% of D01H's recorded grants (91 of 375) - 61 more than Saurer Spinning Solutions GmbH & Co.. Across complete PatentsView years, the class peaked in 2019 at 53 grants and bottomed in 2015 at 11 (+382% peak-over-trough). Equal-window velocity 2020–2024 vs 2015–2019: +27% (194 vs 153 grants).

Leaderboard read

D01H concentration, lead at 24.3%

Maschinenfabrik Rieter AG leads this historical grant record at 24.3% of D01H - foreign corporation assignees hold 95% of class grants (245 of 258). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 24.3%
Top three share: 38.9%
Lead over #2: 61

Where D01H sits inside D01

Among 6 subclasses in D01 (Natural OR Man-made Threads OR FIBRES; Spinning), D01H ranks #3 and holds 5.0% of the parent class's 7,563 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

D01F 3,867 D01D 2,869 D01G 292 D01B 91 D01C 69

Rising assignees active in D01H

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

#1 Saurer Intelligent Technology AG 11x 1 → 11 company-wide · 11 in D01H
#2 Yichang Jingwei Textile Machinery Co., Ltd. 2.00x 2 → 4 company-wide · 6 in D01H
#3 Uster Technologies AG 2.00x 5 → 10 company-wide · 5 in D01H
#4 Saurer Spinning Solutions GmbH & Co. 1.54x 11 → 17 company-wide · 30 in D01H
#5 Saurer Technologies GmbH & Co. KG 1.00x 5 → 5 company-wide · 9 in D01H

D01H grants by year, peak 2019 (53)

US utility-patent grants per year in D01H, 2015–2025 - recent five years are up 27% versus 2015–2019.

Maschinenfabrik Rieter

91
Saurer Spinning…

30
Rieter Ingolstadt

25
Rieter Cz s r o

18
Saurer Intelligent…

11
Saurer & Kg

9
Saurer Germany & Kg

8
Savio Macchine…

6
Yichang Jingwei…

6
Sanko Tekstil…

5
Uster

5
Wuhan Textile…

5

What this shows Maschinenfabrik Rieter is the most active filer in D01H, holding 91 of the 375 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 D01H
Rank	Company	Patents in D01H
#1	Maschinenfabrik Rieter AG	91
#2	Saurer Spinning Solutions GmbH & Co.	30
#3	Rieter Ingolstadt GmbH	25
#4	Rieter CZ s.r.o.	18
#5	Saurer Intelligent Technology AG	11
#6	Saurer Technologies GmbH & Co. KG	9
#7	Saurer Germany GmbH & Co. KG	8
#8	Savio Macchine Tessili S.P.A.	6
#9	Yichang Jingwei Textile Machinery Co., Ltd.	6
#10	Sanko Tekstil Isletmeleri San. Ve Tic. A.S.	5
#11	Uster Technologies AG	5
#12	Wuhan Textile University	5
#13	Lintec OF America, Inc.	4
#14	American Linc, LLC	4
#15	Spinnova OY	4
#16	Oerlikon Textile GmbH & Co. KG	2
#17	Btsr International S.P.A.	2
#18	Zhejiang Hengyi Petrochemical Co., Ltd.	2
#19	Keir Manufacturing, Inc.	2
#20	Sipra Patententwicklungs- und Beteiligungsgesellschaft mbH	2

Footprint here vs. claim strategy

Each dot is a leading D01H 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 D01H assignees by class footprint. Bubble size = patents in D01H. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about D01H

Which company holds the most patents in D01H?

Maschinenfabrik Rieter AG leads D01H with 91 patents (24.3% of the subclass). By PatentsView assignee type, foreign corporations account for 95% of class grants.

Which D01H assignees grew fastest recently?

Among assignees with ≥5 grants in D01H, Saurer Intelligent Technology AG shows the highest company-wide grant multiple (11x: 1 grants in 2019–2021 → 11 in 2022–2024) while holding 11 patents in this subclass. Growth is company-wide, not class-only.

How does D01H compare inside parent class D01?

Inside D01 (Natural OR Man-made Threads OR FIBRES; Spinning), D01H ranks #3 of 6 subclasses by grant volume and holds 5.0% of the parent class total. The largest sibling is D01F (3,867 grants).

What to do with this data

D01H in context - here's where to go next.

Maschinenfabrik Rieter AG leads D01H with 91 grants in this class. See full portfolio
D01H ranks #566 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class D01, the largest sibling subclass is D01F with 3,867 grants. Explore D01F

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

Methodology - D01H figures are USPTO PatentsView granted-utility totals for this subclass (375 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.