CPC technology class · B60

B60J - Windows

Windows, windscreens, non-fixed roofs, doors, or similar devices for vehicles; removable external protective coverings specially adapted for vehicles. 6,966 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

6,966
US patents granted: #11/19
in B60: 2.8%
B60 class share: +29%
5-yr velocity

The verdict

According to USPTO PatentsView, Windows ranks #208 of 670 CPC technology areas - 6,966 US patents granted since 2015, with recorded grant volume up 29% over five years.

#208
of 670 CPC technology areas: 6,966
US patents granted, 2015–2025: Ford Global
leading assignee (513): +29%
grant velocity, last 5 yrs

How B60J's grant cadence moved

Between 2020–2024, B60J recorded 3,372 grants versus 2,622 in 2015–2019 (+29% equal-window velocity). Across complete years, output peaked in 2020 at 764 grants and bottomed in 2015 at 422 (+81% peak-over-trough). Lead assignee Webasto SE holds 2.5% of the class ; the top three share 6.7%.

Leaderboard read

B60J concentration, lead at 2.5%

Webasto SE leads this historical grant record at 2.5% of B60J - foreign corporation assignees hold 67% of class grants (2,339 of 3,476). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 2.5%
Top three share: 6.7%
Lead over #2: 7

Where B60J sits inside B60

Among 19 subclasses in B60 (Vehicles IN General), B60J ranks #11 and holds 2.8% of the parent class's 247,467 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B60R 42,931 B60W 39,530 B60K 34,645 B60L 29,944 B60Y 14,131 B60Q 13,530 B60N 13,335 B60T 11,759

Rising assignees active in B60J

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 Aisin Corporation 50x 9 → 447 company-wide · 52 in B60J
#2 Ningbo Geely Automobile Research & Dev. Co., Ltd. 43x 0 → 43 company-wide · 5 in B60J
#3 Beijing BOE Sensor Technology Co., Ltd. 27x 3 → 81 company-wide · 5 in B60J
#4 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Bamberg 16x 3 → 49 company-wide · 26 in B60J
#5 ACR II Glass America Inc. 16x 0 → 16 company-wide · 7 in B60J

B60J grants by year, peak 2020 (764)

US utility-patent grants per year in B60J, 2015–2025 - recent five years are up 29% versus 2015–2019.

Webasto Se

173
Saint-gobain Glass…

166
Inalfa Roof Systems…

127
Aisin Seiki

126
Nishikawa Rubber

107
Agc

99
Bestop

81
Nissan North America

73
Mazda Motor

72
Magna Mirrors of…

62
Extang

61
Magna Closures

59

What this shows Ford Global is the most active filer in B60J, holding 513 of the 6,966 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 B60J
Rank	Company	Patents in B60J
#1	Webasto SE	173
#2	Saint-gobain Glass France	166
#3	Inalfa Roof Systems Group B.V.	127
#4	Aisin Seiki Kabushiki Kaisha	126
#5	Nishikawa Rubber Co., Ltd.	107
#6	AGC Inc.	99
#7	Bestop, Inc.	81
#8	Nissan North America, Inc.	73
#9	Mazda Motor Corporation	72
#10	Magna Mirrors of America, Inc.	62
#11	Extang Corporation	61
#12	Magna Closures Inc.	59
#13	Aisin Corporation	52
#14	Sekisui Chemical Co., Ltd.	50
#15	FCA US LLC.	44
#16	Toyoda Gosei Co., Ltd.	43
#17	Mitsui Kinzoku ACT Corporation	42
#18	BOS GMBH & Co. KG	41
#19	Shiroki Corporation	40
#20	Magna Exteriors Inc.	39

Footprint here vs. claim strategy

Each dot is a leading B60J 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 B60J assignees by class footprint. Bubble size = patents in B60J. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near B60J's 6,966-grant footprint

Nationwide nearest neighbors for B60J (#208 of 670 by volume ; lead share 7.4%) - not the B60 parent-class siblings above.

Nearest by grant volume

A61H 6,990 F21K 7,021 C01G 6,857 A61J 6,855

Nearest by lead-assignee share

B21J 7.4% G06F 7.4% D21H 7.4% G21D 7.4%

Questions about B60J

Which company holds the most patents in B60J?

Ford Global Technologies, LLC leads B60J with 513 patents (2.5% of the subclass). By PatentsView assignee type, foreign corporations account for 67% of class grants.

Which B60J assignees grew fastest recently?

Among assignees with ≥5 grants in B60J, Aisin Corporation shows the highest company-wide grant multiple (50x: 9 grants in 2019–2021 → 447 in 2022–2024) while holding 52 patents in this subclass. Growth is company-wide, not class-only.

How does B60J compare inside parent class B60?

Inside B60 (Vehicles IN General), B60J ranks #11 of 19 subclasses by grant volume and holds 2.8% of the parent class total. The largest sibling is B60R (42,931 grants).

What to do with this data

B60J in context - here's where to go next.

Webasto SE leads B60J with 173 grants in this class. See full portfolio
B60J ranks #208 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class B60, the largest sibling subclass is B60R with 42,931 grants. Explore B60R

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

Methodology - B60J figures are USPTO PatentsView granted-utility totals for this subclass (6,966 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.