CPC technology class · E05

E05C - Bolts Or Fastening Devices For Wings

Bolts or fastening devices for wings, specially for doors or windows. 2,961 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

2,961
US patents granted: #5/6
in E05: 9.6%
E05 class share: +13%
5-yr velocity

The verdict

According to USPTO PatentsView, Bolts Or Fastening Devices For Wings ranks #318 of 670 CPC technology areas - 2,961 US patents granted since 2015, with recorded grant volume up 13% over five years.

#318
of 670 CPC technology areas: 2,961
US patents granted, 2015–2025: Schlage Lock
leading assignee (82): +13%
grant velocity, last 5 yrs

How E05C's grant cadence moved

Between 2020–2024, E05C recorded 1,408 grants versus 1,245 in 2015–2019 (+13% equal-window velocity). Across complete years, output peaked in 2020 at 317 grants and bottomed in 2015 at 215 (+47% peak-over-trough). Lead assignee Schlage Lock Company LLC holds 2.8% of the class ; the top three share 4.6%.

Leaderboard read

E05C concentration, lead at 2.8%

Schlage Lock Company LLC leads this historical grant record at 2.8% of E05C - us corporation assignees hold 64% of class grants (1,001 of 1,564). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 2.8%
Top three share: 4.6%
Lead over #2: 55

Where E05C sits inside E05

Among 6 subclasses in E05 (LOCKS; KEYS; Window OR Door FITTINGS; Safes), E05C ranks #5 and holds 9.6% of the parent class's 30,842 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

E05B 9,176 E05Y 8,287 E05F 5,529 E05D 4,538 E05G 351

Rising assignees active in E05C

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 Assa Abloy Americas Residential Inc. 95x 0 → 95 company-wide · 9 in E05C
#2 Outrider Technologies, Inc. 13x 1 → 13 company-wide · 8 in E05C
#3 Security Enhancement Systems, LLC 6.67x 3 → 20 company-wide · 10 in E05C
#4 Abloy OY 5.00x 3 → 15 company-wide · 7 in E05C
#5 Hoppe Holding AG 5.00x 1 → 5 company-wide · 5 in E05C

E05C grants by year, peak 2020 (317)

US utility-patent grants per year in E05C, 2015–2025 - recent five years are up 13% versus 2015–2019.

Schlage Lock

82
Piolax

27
Vision Industries…

26
Kiekert

25
Southco

25
Carlson Pet Products

25
B/E Aerospace

24
Rohr

23
Regalo International

21
Endura Products

21
Spectrum Brands

20
Hanchett Entry Systems

20

What this shows Schlage Lock is the most active filer in E05C, holding 82 of the 2,961 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 E05C
Rank	Company	Patents in E05C
#1	Schlage Lock Company LLC	82
#2	Piolax, Inc.	27
#3	Vision Industries Group, Inc.	26
#4	Kiekert AG	25
#5	Southco, Inc.	25
#6	Carlson Pet Products, Inc.	25
#7	B/E Aerospace, Inc.	24
#8	Rohr, Inc.	23
#9	Regalo International, LLC	21
#10	Endura Products, LLC	21
#11	Spectrum Brands, Inc.	20
#12	Hanchett Entry Systems, Inc.	20
#13	Sargent Manufacturing Company	20
#14	August Home, Inc.	20
#15	TriTeq Lock and Security, LLC	20
#16	Truth Hardware Corporation	18
#17	Andersen Corporation	16
#18	The Eastern Company	16
#19	Hartwell Corporation	15
#20	United States Postal Service	14

Footprint here vs. claim strategy

Each dot is a leading E05C 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 E05C assignees by class footprint. Bubble size = patents in E05C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near E05C's 2,961-grant footprint

Nationwide nearest neighbors for E05C (#318 of 670 by volume ; lead share 2.8%) - not the E05 parent-class siblings above.

Nearest by grant volume

G05G 2,952 F24H 2,950 B41F 2,980 A62C 2,939

Nearest by lead-assignee share

C05G 2.8% C23F 2.8% G07B 2.8% A61F 2.8%

Questions about E05C

Which company holds the most patents in E05C?

Schlage Lock Company LLC leads E05C with 82 patents (2.8% of the subclass). By PatentsView assignee type, us corporations account for 64% of class grants.

Which E05C assignees grew fastest recently?

Among assignees with ≥5 grants in E05C, Assa Abloy Americas Residential Inc. shows the highest company-wide grant multiple (95x: 0 grants in 2019–2021 → 95 in 2022–2024) while holding 9 patents in this subclass. Growth is company-wide, not class-only.

How does E05C compare inside parent class E05?

Inside E05 (LOCKS; KEYS; Window OR Door FITTINGS; Safes), E05C ranks #5 of 6 subclasses by grant volume and holds 9.6% of the parent class total. The largest sibling is E05B (9,176 grants).

What to do with this data

E05C in context - here's where to go next.

Schlage Lock Company LLC leads E05C with 82 grants in this class. See full portfolio
E05C ranks #318 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class E05, the largest sibling subclass is E05B with 9,176 grants. Explore E05B

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

Methodology - E05C figures are USPTO PatentsView granted-utility totals for this subclass (2,961 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.