PlainPatent

CPC technology class · B27

B27G - Accessory Machines OR Apparatus FOR Working WOOD OR Simil…

Accessory machines or apparatus for working wood or similar materials; tools for working wood or similar materials ; safety devices for wood working machines or tools. 503 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

503
US patents granted
B27
Parent CPC class
20
Active assignees
+36%
5-yr velocity

The verdict

Accessory Machines OR Apparatus FOR Working WOOD OR Simil… ranks #543 of 670 CPC technology areas - 503 US patents granted since 2015, with filing up 36% over five years.

#543
of 670 CPC technology areas
503
US patents granted, 2015–2025
Robert Bosch
leading assignee (66)
+36%
filing velocity, last 5 yrs
Top assignee: Robert Bosch Gmbh (66 patents)

CPC subclass B27G - ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS ; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS - covers 503 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B27 (WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL). See our CPC classification guide for how the system works.

The competitive landscape in B27G is shaped by 20 distinct companies actively filing in this space. Robert Bosch Gmbh leads with 66 patents, followed by Sawstop Holding Llc at 24 grants and Festool Gmbh at 20.

Filing activity in B27G is up 36% over the past five years versus 2015-2019, a sharp acceleration suggesting an emerging or fast-moving technology area. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is B27G innovation accelerating?

US utility-patent grants per year in B27G, 2015–2025 - recent five years are up 36% versus 2015–2019.

2030405060 20152016201720182019202020212022202320242025 47

Who leads B27G?

The 12 most active assignees in ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS ; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS - wider bars mean more grants

patents

What this shows Robert Bosch is the most active filer in B27G, holding 66 of the 503 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 B27G
Rank Company Patents in B27G
#1 Robert Bosch Tool Corporation 45
#2 Sawstop Holding Llc 24
#3 Festool Gmbh 20
#4 Valinge Innovation AB 13
#5 Woodpeckers, Llc 6
#6 USNR, Llc 6
#7 Rexon Industrial Corp., Ltd. 6
#8 Ledermann Gmbh & Co. KG 6
#9 Välinge Innovation AB 5
#10 Kreg Enterprises, Inc. 5
#11 JPL Global, Llc 5
#12 SD3, Llc 5
#13 Ridge Tool Company 4
#14 Power Box Ag 4
#15 Green Manufacturing, Inc. 3
#16 Jessem Tool Corporation 3
#17 Sears Brands, L.l.c. 2
#18 Germans Boada, S.a. 2
#19 Homag Gmbh 2
#20 Affinity Tool Works, Llc 2

About This Class

CPC subclass B27G belongs to class B27.

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

20 companies actively patent in this space.

Classification System

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

← All Technology Classes Technology Rankings →

Footprint here vs. claim strategy

Each dot is a leading B27G 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 B27G assignees by class footprint. Bubble size = patents in B27G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 B27G assignees by class footprint. Bubble size = patents in B27G. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 01020304050 Patents in B27G Avg claims / patent (company-wide) Robert Bosch ToolSawstop HoldingFestoolValinge Innovation AbWoodpeckersUsnrRexon IndustrialLedermann & KgVÄLinge Innovation AbKreg EnterprisesJpl GlobalSd3Ridge ToolPower Box
Top 14 B27G assignees by class footprint. Bubble size = patents in B27G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B27G?
CPC subclass B27G covers ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS ; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS. It belongs to CPC class B27 (WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL), with 503 US utility patents granted since 2015.
How many patents have been filed in B27G?
503 US utility patents were granted in CPC subclass B27G between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in B27G?
Robert Bosch Gmbh leads B27G with 66 patents, making it the most active assignee in this technology area.
How is patent data for B27G 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., B27) is a broad technology category. Subclasses like B27G 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.