CPC technology class · B27

B27N - Manufacture By Dry Processes Of Articles

Manufacture by dry processes of articles, with or without organic binding agents, made from particles or fibres consisting of wood or other lignocellulosic or like organic material. 750 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

750
US patents granted: #2/11
in B27: 18.1%
B27 class share: +48%
5-yr velocity

The verdict

According to USPTO PatentsView, Manufacture By Dry Processes Of Articles ranks #491 of 670 CPC technology areas - 750 US patents granted since 2015, with recorded grant volume up 48% over five years.

#491
of 670 CPC technology areas: 750
US patents granted, 2015–2025: Seiko Epson
leading assignee (56): +48%
grant velocity, last 5 yrs

How B27N's grant cadence moved

Between 2020–2024, B27N recorded 393 grants versus 265 in 2015–2019 (+48% equal-window velocity). Across complete years, output peaked in 2024 at 99 grants and bottomed in 2015 at 43 (+130% peak-over-trough). Lead assignee Flooring Industies Limited, Sarl holds 4.4% of the class ; the top three share 10.7%.

Leaderboard read

B27N concentration, lead at 4.4%

Flooring Industies Limited, Sarl leads this historical grant record at 4.4% of B27N - foreign corporation assignees hold 66% of class grants (264 of 398). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 4.4%
Top three share: 10.7%
Lead over #2: 9

Where B27N sits inside B27

Among 11 subclasses in B27 (Working OR Preserving Wood OR Similar MATERIAL; Nailing OR Stapling Machines IN General), B27N ranks #2 and holds 18.1% of the parent class's 4,149 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B27B 1,327 B27G 503 B27K 387 B27M 306 B27F 238 B27C 208 B27D 200 B27L 168

Rising assignees active in B27N

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 VÄLINGE Innovation AB 47x 0 → 47 company-wide · 12 in B27N
#2 PulPac AB 8.00x 1 → 8 company-wide · 11 in B27N
#3 Unilin BV 6.11x 9 → 55 company-wide · 16 in B27N
#4 Louisiana-pacific Corp. 2.57x 7 → 18 company-wide · 9 in B27N
#5 Knauf Insulation Sprl 1.91x 11 → 21 company-wide · 12 in B27N

B27N grants by year, peak 2024 (99)

US utility-patent grants per year in B27N, 2015–2025 - recent five years are up 48% versus 2015–2019.

Flooring Industies…

33
Masonite

24
Valinge Innovation Ab

23
Georgia-pacific…

20
Swiss Krono Tec

20
Unilin Bv

16
Stora Enso Oyj

14
VÄLinge Innovation Ab

12
Knauf Insulation

12
Knauf Insulation Sprl

12
Pulpac Ab

11
Flooring

10

What this shows Seiko Epson is the most active filer in B27N, holding 56 of the 750 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 B27N
Rank	Company	Patents in B27N
#1	Flooring Industies Limited, Sarl	33
#2	Masonite Corporation	24
#3	Valinge Innovation AB	23
#4	Georgia-Pacific Chemicals LLC	20
#5	Swiss Krono Tec AG	20
#6	Unilin BV	16
#7	Stora Enso OYJ	14
#8	VÄLINGE Innovation AB	12
#9	Knauf Insulation, Inc.	12
#10	Knauf Insulation Sprl	12
#11	PulPac AB	11
#12	Flooring Technologies Ltd.	10
#13	Louisiana-pacific Corp.	9
#14	Ceraloc Innovation AB	8
#15	Pergo (EUROPE) AB	8
#16	Fibria Innovations Inc.	8
#17	Siempelkamp Maschinen- und Anlagenbau GmbH	7
#18	Unilin Bvba	6
#19	Jeld-wen, Inc.	5
#20	Evertree	5

Footprint here vs. claim strategy

Each dot is a leading B27N 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 B27N assignees by class footprint. Bubble size = patents in B27N. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near B27N's 750-grant footprint

Nationwide nearest neighbors for B27N (#491 of 670 by volume ; lead share 7.5%) - not the B27 parent-class siblings above.

Nearest by grant volume

B31D 747 C05C 753 C25C 753 C13K 754

Nearest by lead-assignee share

B21F 7.5% B82Y 7.5% C23C 7.4% B23D 7.4%

Questions about B27N

Which company holds the most patents in B27N?

Seiko Epson Corporation leads B27N with 56 patents (4.4% of the subclass). By PatentsView assignee type, foreign corporations account for 66% of class grants.

Which B27N assignees grew fastest recently?

Among assignees with ≥5 grants in B27N, VÄLINGE Innovation AB shows the highest company-wide grant multiple (47x: 0 grants in 2019–2021 → 47 in 2022–2024) while holding 12 patents in this subclass. Growth is company-wide, not class-only.

How does B27N compare inside parent class B27?

Inside B27 (Working OR Preserving Wood OR Similar MATERIAL; Nailing OR Stapling Machines IN General), B27N ranks #2 of 11 subclasses by grant volume and holds 18.1% of the parent class total. The largest sibling is B27B (1,327 grants).

What to do with this data

B27N in context - here's where to go next.

Flooring Industies Limited, Sarl leads B27N with 33 grants in this class. See full portfolio
B27N ranks #491 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class B27, the largest sibling subclass is B27B with 1,327 grants. Explore B27B

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

Methodology - B27N figures are USPTO PatentsView granted-utility totals for this subclass (750 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.