PlainPatent

CPC technology class · E06

E06C - Ladders

Ladders. 653 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

653
US patents granted
E06
Parent CPC class
20
Active assignees
+18%
5-yr velocity

The verdict

Ladders ranks #511 of 670 CPC technology areas - 653 US patents granted since 2015, with filing up 18% over five years.

#511
of 670 CPC technology areas
653
US patents granted, 2015–2025
Werner
leading assignee (59)
+18%
filing velocity, last 5 yrs
Top assignee: Werner Co. (59 patents)

CPC subclass E06C - LADDERS - covers 653 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class E06 (DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS). See our CPC classification guide for how the system works.

The competitive landscape in E06C is shaped by 20 distinct companies actively filing in this space. Werner Co. leads with 59 patents, followed by Oshkosh Corporation at 44 grants and WING Enterprises, Incorporated at 35.

Filing activity in E06C is up 18% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is E06C innovation accelerating?

US utility-patent grants per year in E06C, 2015–2025 - recent five years are up 18% versus 2015–2019.

405060708090 20152016201720182019202020212022202320242025 54

Who leads E06C?

The 12 most active assignees in LADDERS - wider bars mean more grants

patents

What this shows Werner is the most active filer in E06C, holding 59 of the 653 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 E06C
Rank Company Patents in E06C
#1 Werner Co. 59
#2 Oshkosh Corporation 44
#3 WING Enterprises, Incorporated 35
#4 Little Giant Ladder Systems, Llc 24
#5 Iveco Magirus Ag 12
#6 New-tec Integration (xiamen) Co., Ltd. 10
#7 Tricam Industries, Llc 9
#8 Core Distribution, Inc. 9
#9 Panduit Corp. 8
#10 Louisville Ladder Inc. 7
#11 Altec Industries, Inc. 6
#12 Safe Rack Llc 6
#13 Ardisam, Inc. 5
#14 Dorel Home Furnishings, Inc. 5
#15 Hbtek, Inc. 5
#16 Lampe Holding B.v. 5
#17 Blue Moon Designs, Llc 5
#18 Intex Marketing Ltd. 4
#19 Polygroup Macau Limited (bvi) 4
#20 Tie Down, Inc. 4

About This Class

CPC subclass E06C belongs to class E06.

653 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 E06C 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 E06C assignees by class footprint. Bubble size = patents in E06C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 E06C assignees by class footprint. Bubble size = patents in E06C. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 020406080 Patents in E06C Avg claims / patent (company-wide) WernerOshkoshWing Enterprises Inco…Little Giant Ladder S…Iveco MagirusNew-tec Integration (…Tricam IndustriesCore DistributionPanduitLouisville LadderAltec IndustriesSafe RackArdisamDorel Home Furnishings
Top 14 E06C assignees by class footprint. Bubble size = patents in E06C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class E06C?
CPC subclass E06C covers LADDERS. It belongs to CPC class E06 (DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS), with 653 US utility patents granted since 2015.
How many patents have been filed in E06C?
653 US utility patents were granted in CPC subclass E06C between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in E06C?
Werner Co. leads E06C with 59 patents, making it the most active assignee in this technology area.
How is patent data for E06C 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., E06) is a broad technology category. Subclasses like E06C 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.