PlainPatent

CPC technology class · E01

E01C - Construction OF

Construction of, or surfaces for, roads, sports grounds, or the like; machines or auxiliary tools for construction or repair. 3,503 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

3,503
US patents granted
E01
Parent CPC class
20
Active assignees
+16%
5-yr velocity

The verdict

Construction OF ranks #296 of 670 CPC technology areas - 3,503 US patents granted since 2015, with filing up 16% over five years.

#296
of 670 CPC technology areas
3,503
US patents granted, 2015–2025
Caterpillar Paving Pr…
leading assignee (383)
+16%
filing velocity, last 5 yrs
Top assignee: Caterpillar Paving Products Inc. (383 patents)

CPC subclass E01C - CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR - covers 3,503 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class E01 (CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES). See our CPC classification guide for how the system works.

The competitive landscape in E01C is shaped by 20 distinct companies actively filing in this space. Caterpillar Paving Products Inc. leads with 383 patents, followed by Wirtgen Gmbh at 304 grants and Bomag Gmbh at 111.

Filing activity in E01C is up 16% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is E01C innovation accelerating?

US utility-patent grants per year in E01C, 2015–2025 - recent five years are up 16% versus 2015–2019.

200250300350400450 20152016201720182019202020212022202320242025 238

Who leads E01C?

The 12 most active assignees in CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR - wider bars mean more grants

patents

What this shows Caterpillar Paving Pr… is the most active filer in E01C, holding 383 of the 3,503 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 E01C
Rank Company Patents in E01C
#1 Caterpillar Paving Products Inc. 383
#2 Wirtgen Gmbh 304
#3 Bomag Gmbh 111
#4 Joseph Voegele Ag 98
#5 Hamm Ag 63
#6 Gomaco Corporation 33
#7 Schul International Co., Llc 32
#8 Volvo Construction Equipment AB 31
#9 Roadtec, Inc. 31
#10 Newpark MATS & Integrated Services Llc 29
#11 A.l.m. Holding Company 26
#12 Brock USA, Llc 25
#13 Graco Minnesota Inc. 23
#14 Ergon Asphalt & Emulsions, Inc. 20
#15 Polytex Sportbeläge Produktions-gmbh 20
#16 MOBA Mobile Automation Ag 18
#17 Integrated Roadways, Inc. 18
#18 Quality MAT Company 18
#19 Somero Enterprises, Inc. 15
#20 Guntert & Zimmerman Const. DIV., Inc. 15

About This Class

CPC subclass E01C belongs to class E01.

3,503 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 E01C 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 E01C assignees by class footprint. Bubble size = patents in E01C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 E01C assignees by class footprint. Bubble size = patents in E01C. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 10152025 0100200300400500 Patents in E01C Avg claims / patent (company-wide) Caterpillar Paving Pr…WirtgenBomagJoseph VoegeleHammGomacoSchul InternationalVolvo Construction Eq…RoadtecNewpark Mats & Integr…A L M HoldingBrock UsaGraco MinnesotaErgon Asphalt & Emuls…
Top 14 E01C assignees by class footprint. Bubble size = patents in E01C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class E01C?
CPC subclass E01C covers CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR. It belongs to CPC class E01 (CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES), with 3,503 US utility patents granted since 2015.
How many patents have been filed in E01C?
3,503 US utility patents were granted in CPC subclass E01C between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in E01C?
Caterpillar Paving Products Inc. leads E01C with 383 patents, making it the most active assignee in this technology area.
How is patent data for E01C 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., E01) is a broad technology category. Subclasses like E01C 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.