CPC technology class · B29

B29L - Indexing Scheme Associated WITH Subclass B29C

Indexing scheme associated with subclass b29c, relating to particular articles. 23,135 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

23,135
US patents granted: B29
Parent CPC class: 20
Active assignees: +23%
5-yr velocity

The verdict

Indexing Scheme Associated WITH Subclass B29C ranks #87 of 670 CPC technology areas - 23,135 US patents granted since 2015, with filing up 23% over five years.

#87
of 670 CPC technology areas: 23,135
US patents granted, 2015–2025: The Boeing
leading assignee (960): +23%
filing velocity, last 5 yrs

Top assignee: The Boeing Company (960 patents)

CPC subclass B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES - covers 23,135 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B29 (WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL). See our CPC classification guide for how the system works.

The competitive landscape in B29L is shaped by 20 distinct companies actively filing in this space. The Boeing Company leads with 960 patents, followed by NIKE, Inc. at 295 grants and The Procter & Gamble Company at 262.

Filing activity in B29L is up 23% 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 B29L innovation accelerating?

US utility-patent grants per year in B29L, 2015–2025 - recent five years are up 23% versus 2015–2019.

The Boeing

960
Nike

295
The Procter & Gamble

262
Airbus Operations

181
Safran Aircraft Engin…

114
Krones

114
Vestas Wind Systems A…

99
Align Technology

94
Discma

92
Airbus Operations Sas

91
Sidel Participations S

91
Abbott Cardiovascular…

88

What this shows The Boeing is the most active filer in B29L, holding 960 of the 23,135 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 B29L
Rank	Company	Patents in B29L
#1	The Boeing Company	960
#2	NIKE, Inc.	295
#3	The Procter & Gamble Company	262
#4	Airbus Operations Limited	181
#5	Safran Aircraft Engines	114
#6	Krones Ag	114
#7	Vestas Wind Systems A/s	99
#8	Align Technology, Inc.	94
#9	Discma Ag	92
#10	Airbus Operations SAS	91
#11	Sidel Participations S.a.s	91
#12	Abbott Cardiovascular Systems, Inc.	88
#13	Sabic Global Technologies B.v.	86
#14	Yoshino Kogyosho Co., Ltd.	85
#15	Nissei ASB Machine Co., Ltd.	85
#16	Compagnie Generale DES Etablissements Michelin	83
#17	Sumitomo Rubber Industries, Ltd.	79
#18	Tetra Laval Holdings & Finance S.a.	78
#19	ROHR, Inc.	64
#20	Dai Nippon Printing Co., Ltd.	63

About This Class

CPC subclass B29L belongs to class B29.

23,135 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 B29L 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 B29L assignees by class footprint. Bubble size = patents in B29L. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B29L?

CPC subclass B29L covers INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES. It belongs to CPC class B29 (WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL), with 23,135 US utility patents granted since 2015.

How many patents have been filed in B29L?

23,135 US utility patents were granted in CPC subclass B29L between 2015 and 2025, based on USPTO PatentsView data.

Which company holds the most patents in B29L?

The Boeing Company leads B29L with 960 patents, making it the most active assignee in this technology area.

How is patent data for B29L 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., B29) is a broad technology category. Subclasses like B29L 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.