PlainPatent

CPC technology class · E06

E06B - Fixed OR Movable Closures FOR Openings IN Buildings

Fixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates. 7,398 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

7,398
US patents granted
E06
Parent CPC class
20
Active assignees
+29%
5-yr velocity

The verdict

Fixed OR Movable Closures FOR Openings IN Buildings ranks #201 of 670 CPC technology areas - 7,398 US patents granted since 2015, with filing up 29% over five years.

#201
of 670 CPC technology areas
7,398
US patents granted, 2015–2025
Hunter Douglas
leading assignee (261)
+29%
filing velocity, last 5 yrs
Top assignee: Hunter Douglas Inc. (261 patents)

CPC subclass E06B - FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES - covers 7,398 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 E06B is shaped by 20 distinct companies actively filing in this space. Hunter Douglas Inc. leads with 261 patents, followed by View, Inc. at 230 grants and Lutron Technology Company Llc at 144.

Filing activity in E06B is up 29% 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 E06B innovation accelerating?

US utility-patent grants per year in E06B, 2015–2025 - recent five years are up 29% versus 2015–2019.

400500600700800900 20152016201720182019202020212022202320242025 479

Who leads E06B?

The 12 most active assignees in FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES - wider bars mean more grants

patents

What this shows Hunter Douglas is the most active filer in E06B, holding 261 of the 7,398 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 E06B
Rank Company Patents in E06B
#1 Hunter Douglas Inc. 261
#2 View, Inc. 230
#3 Lutron Technology Company Llc 144
#4 Saint-gobain Glass France 115
#5 Masonite Corporation 107
#6 Guardian Glass, Llc 106
#7 VKR Holding A/s 79
#8 Nien Made Enterprise Co., Ltd. 70
#9 Guardian Industries Corp. 61
#10 Mechoshade Systems, Llc 61
#11 Endura Products, Llc 57
#12 Crestron Electronics, Inc. 53
#13 Carlson Pet Products, Inc. 50
#14 Lutron Electronics Co., Inc. 49
#15 Regalo International, Llc 49
#16 Andersen Corporation 48
#17 Pella Corporation 48
#18 Somfy Activites Sa 41
#19 Cardinal IG Company 41
#20 Overhead Door Corporation 37

About This Class

CPC subclass E06B belongs to class E06.

7,398 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 E06B 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 E06B assignees by class footprint. Bubble size = patents in E06B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 E06B assignees by class footprint. Bubble size = patents in E06B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 050100150200250300 Patents in E06B Avg claims / patent (company-wide) Hunter DouglasViewLutron TechnologySaint-gobain Glass Fr…MasoniteGuardian GlassVkr Holding A/SNien Made EnterpriseGuardian IndustriesMechoshade SystemsEndura ProductsCrestronCarlson Pet ProductsLutron
Top 14 E06B assignees by class footprint. Bubble size = patents in E06B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class E06B?
CPC subclass E06B covers FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES. It belongs to CPC class E06 (DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS), with 7,398 US utility patents granted since 2015.
How many patents have been filed in E06B?
7,398 US utility patents were granted in CPC subclass E06B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in E06B?
Hunter Douglas Inc. leads E06B with 261 patents, making it the most active assignee in this technology area.
How is patent data for E06B 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 E06B 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.