CPC technology class · B27

B27B - Saws For Wood Or Similar Material

Saws for wood or similar material; components or accessories therefor. 1,327 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

1,327
US patents granted: #1/11
in B27: 32.0%
B27 class share: +13%
5-yr velocity

The verdict

According to USPTO PatentsView, Saws For Wood Or Similar Material ranks #419 of 670 CPC technology areas - 1,327 US patents granted since 2015, with recorded grant volume up 13% over five years.

#419
of 670 CPC technology areas: 1,327
US patents granted, 2015–2025: Robert Bosch
leading assignee (148): +13%
grant velocity, last 5 yrs

How B27B's grant cadence moved

Between 2020–2024, B27B recorded 614 grants versus 542 in 2015–2019 (+13% equal-window velocity). Across complete years, output peaked in 2020 at 153 grants and bottomed in 2015 at 90 (+70% peak-over-trough). Lead assignee Makita Corporation holds 7.8% of the class ; the top three share 18.8%.

Leaderboard read

B27B concentration, lead at 7.8%

Makita Corporation leads this historical grant record at 7.8% of B27B - foreign corporation assignees hold 59% of class grants (494 of 832). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 7.8%
Top three share: 18.8%
Lead over #2: 20

Where B27B sits inside B27

Among 11 subclasses in B27 (Working OR Preserving Wood OR Similar MATERIAL; Nailing OR Stapling Machines IN General), B27B ranks #1 and holds 32.0% 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.

B27N 750 B27G 503 B27K 387 B27M 306 B27F 238 B27C 208 B27D 200 B27L 168

Rising assignees active in B27B

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 Festool GMBH 4.79x 14 → 67 company-wide · 20 in B27B
#2 Globe (Jiangsu) Co., Ltd. 4.14x 28 → 116 company-wide · 8 in B27B
#3 Norwood Industries Inc. 4.00x 1 → 4 company-wide · 5 in B27B
#4 Techtronic Cordless GP 3.48x 42 → 146 company-wide · 18 in B27B
#5 Woodpeckers, LLC 2.15x 34 → 73 company-wide · 8 in B27B

B27B grants by year, peak 2020 (153)

US utility-patent grants per year in B27B, 2015–2025 - recent five years are up 13% versus 2015–2019.

Makita

104
Andreas Stihl & Kg

84
Black & Decker

62
Robert Bosch Tool

54
Husqvarna Ab

52
Usnr

36
Yamabiko

22
Sawstop Holding

22
Festool

20
Nanjing Chervon…

19
Techtronic Cordless Gp

18
C & E Fein

17

What this shows Robert Bosch is the most active filer in B27B, holding 148 of the 1,327 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 B27B
Rank	Company	Patents in B27B
#1	Makita Corporation	104
#2	Andreas Stihl AG & Co. KG	84
#3	Black & Decker Inc.	62
#4	Robert Bosch Tool Corporation	54
#5	Husqvarna AB	52
#6	Usnr, LLC	36
#7	Yamabiko Corporation	22
#8	SawStop Holding LLC	22
#9	Festool GMBH	20
#10	Nanjing Chervon Industry Co., Ltd.	19
#11	Techtronic Cordless GP	18
#12	C. & E. Fein GMBH	17
#13	Koki Holdings Co., Ltd.	16
#14	Chervon (HK) Limited	15
#15	Rexon Industrial Corp., Ltd.	14
#16	Hitachi Koki Co., Ltd.	12
#17	Kreg Enterprises, Inc.	12
#18	Blount, Inc.	11
#19	Positec Power Tools (Suzhou) Co., Ltd.	8
#20	Globe (Jiangsu) Co., Ltd.	8

Footprint here vs. claim strategy

Each dot is a leading B27B 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 B27B assignees by class footprint. Bubble size = patents in B27B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near B27B's 1,327-grant footprint

Nationwide nearest neighbors for B27B (#419 of 670 by volume ; lead share 11.2%) - not the B27 parent-class siblings above.

Nearest by grant volume

F21L 1,327 B28D 1,321 A22C 1,343 B66D 1,354

Nearest by lead-assignee share

B04C 11.1% A41H 11.1% B31F 11.0% F05B 11.0%

Questions about B27B

Which company holds the most patents in B27B?

Robert Bosch GmbH leads B27B with 148 patents (7.8% of the subclass). By PatentsView assignee type, foreign corporations account for 59% of class grants.

Which B27B assignees grew fastest recently?

Among assignees with ≥5 grants in B27B, Festool GMBH shows the highest company-wide grant multiple (4.79x: 14 grants in 2019–2021 → 67 in 2022–2024) while holding 20 patents in this subclass. Growth is company-wide, not class-only.

How does B27B compare inside parent class B27?

Inside B27 (Working OR Preserving Wood OR Similar MATERIAL; Nailing OR Stapling Machines IN General), B27B ranks #1 of 11 subclasses by grant volume and holds 32.0% of the parent class total. The largest sibling is B27N (750 grants).

What to do with this data

B27B in context - here's where to go next.

Makita Corporation leads B27B with 104 grants in this class. See full portfolio
B27B ranks #419 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class B27, the largest sibling subclass is B27N with 750 grants. Explore B27N

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

Methodology - B27B figures are USPTO PatentsView granted-utility totals for this subclass (1,327 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.