CPC technology class · E05

E05B - Locks

Locks; accessories therefor; handcuffs. 9,176 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

9,176
US patents granted: #1/6
in E05: 29.8%
E05 class share: +22%
5-yr velocity

The verdict

According to USPTO PatentsView, Locks ranks #177 of 670 CPC technology areas - 9,176 US patents granted since 2015, with recorded grant volume up 22% over five years.

#177
of 670 CPC technology areas: 9,176
US patents granted, 2015–2025: Schlage Lock
leading assignee (337): +22%
grant velocity, last 5 yrs

How E05B's grant cadence moved

Between 2020–2024, E05B recorded 4,406 grants versus 3,617 in 2015–2019 (+22% equal-window velocity). Across complete years, output peaked in 2024 at 949 grants and bottomed in 2015 at 573 (+66% peak-over-trough). Lead assignee Schlage Lock Company LLC holds 3.7% of the class ; the top three share 8.1%.

Leaderboard read

E05B concentration, lead at 3.7%

Schlage Lock Company LLC leads this historical grant record at 3.7% of E05B - us corporation assignees hold 53% of class grants (2,815 of 5,309). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 3.7%
Top three share: 8.1%
Lead over #2: 44

Where E05B sits inside E05

Among 6 subclasses in E05 (LOCKS; KEYS; Window OR Door FITTINGS; Safes), E05B ranks #1 and holds 29.8% 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.

E05Y 8,287 E05F 5,529 E05D 4,538 E05C 2,961 E05G 351

Rising assignees active in E05B

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 Mercedes-Benz Group AG 257x 0 → 257 company-wide · 17 in E05B
#2 Assa Abloy Americas Residential Inc. 95x 0 → 95 company-wide · 34 in E05B
#3 Aisin Corporation 50x 9 → 447 company-wide · 29 in E05B
#4 Rad Power Bikes Inc. 17x 2 → 33 company-wide · 5 in E05B
#5 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Bamberg 16x 3 → 49 company-wide · 8 in E05B

E05B grants by year, peak 2024 (949)

US utility-patent grants per year in E05B, 2015–2025 - recent five years are up 22% versus 2015–2019.

Schlage Lock

337
Kiekert

293
Mitsui Kinzoku Act

109
Magna Closures

108
Huf Hülsbeck & Fürst…

98
Illinois Tool Works

97
Aisin Seiki

95
Inteva Products

83
Invue Security…

64
Spectrum Brands

63
Hanchett Entry Systems

60
Sargent Manufacturing

60

What this shows Schlage Lock is the most active filer in E05B, holding 337 of the 9,176 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 E05B
Rank	Company	Patents in E05B
#1	Schlage Lock Company LLC	337
#2	Kiekert AG	293
#3	Mitsui Kinzoku ACT Corporation	109
#4	Magna Closures Inc.	108
#5	Huf Hülsbeck & Fürst GmbH & Co. KG	98
#6	Illinois Tool Works Inc.	97
#7	Aisin Seiki Kabushiki Kaisha	95
#8	Inteva Products, LLC	83
#9	InVue Security Products Inc.	64
#10	Spectrum Brands, Inc.	63
#11	Hanchett Entry Systems, Inc.	60
#12	Sargent Manufacturing Company	60
#13	Abus August Bremicker Söhne KG	54
#14	August Home, Inc.	52
#15	Magna Mirrors of America, Inc.	46
#16	Alpha Corporation	45
#17	Kabushiki Kaisha Honda Lock	42
#18	Sensormatic Electronics, LLC	40
#19	U-shin Italia S.p.A	39
#20	Acco Brands Corporation	37

Footprint here vs. claim strategy

Each dot is a leading E05B 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 E05B assignees by class footprint. Bubble size = patents in E05B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near E05B's 9,176-grant footprint

Nationwide nearest neighbors for E05B (#177 of 670 by volume ; lead share 3.7%) - not the E05 parent-class siblings above.

Nearest by grant volume

A23V 9,116 B08B 9,052 B60C 9,320 C03C 8,986

Nearest by lead-assignee share

H03K 3.7% C05B 3.7% H02K 3.7% H04R 3.7%

Questions about E05B

Which company holds the most patents in E05B?

Schlage Lock Company LLC leads E05B with 337 patents (3.7% of the subclass). By PatentsView assignee type, us corporations account for 53% of class grants.

Which E05B assignees grew fastest recently?

Among assignees with ≥5 grants in E05B, Mercedes-Benz Group AG shows the highest company-wide grant multiple (257x: 0 grants in 2019–2021 → 257 in 2022–2024) while holding 17 patents in this subclass. Growth is company-wide, not class-only.

How does E05B compare inside parent class E05?

Inside E05 (LOCKS; KEYS; Window OR Door FITTINGS; Safes), E05B ranks #1 of 6 subclasses by grant volume and holds 29.8% of the parent class total. The largest sibling is E05Y (8,287 grants).

What to do with this data

E05B in context - here's where to go next.

Schlage Lock Company LLC leads E05B with 337 grants in this class. See full portfolio
E05B ranks #177 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class E05, the largest sibling subclass is E05Y with 8,287 grants. Explore E05Y

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

Methodology - E05B figures are USPTO PatentsView granted-utility totals for this subclass (9,176 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.