PlainPatent

CPC technology class · G04

G04F - Time-interval Measuring

Time-interval measuring. 1,418 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

1,418
US patents granted
G04
Parent CPC class
20
Active assignees
+21%
5-yr velocity

The verdict

Time-interval Measuring ranks #414 of 670 CPC technology areas - 1,418 US patents granted since 2015, with filing up 21% over five years.

#414
of 670 CPC technology areas
1,418
US patents granted, 2015–2025
Seiko Epson
leading assignee (150)
+21%
filing velocity, last 5 yrs
Top assignee: Seiko Epson Corporation (150 patents)

CPC subclass G04F - TIME-INTERVAL MEASURING - covers 1,418 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class G04 (HOROLOGY). See our CPC classification guide for how the system works.

The competitive landscape in G04F is shaped by 20 distinct companies actively filing in this space. Seiko Epson Corporation leads with 150 patents, followed by Rolex Sa at 11 grants and Montres Breguet S.a. at 10.

Filing activity in G04F is up 21% 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 G04F innovation accelerating?

US utility-patent grants per year in G04F, 2015–2025 - recent five years are up 21% versus 2015–2019.

50100150200 20152016201720182019202020212022202320242025 87

Who leads G04F?

The 12 most active assignees in TIME-INTERVAL MEASURING - wider bars mean more grants

patents

What this shows Seiko Epson is the most active filer in G04F, holding 150 of the 1,418 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 G04F
Rank Company Patents in G04F
#1 The Swatch Group Research And Development Ltd 14
#2 Rolex Sa 11
#3 Montres Breguet S.a. 10
#4 Omega Sa 10
#5 Vision Works IP Corporation 9
#6 Stmicroelectronics (research & Development) Limited 8
#7 ETA Sa Manufacture Horlogère Suisse 7
#8 Coldquanta, Inc. 7
#9 Time Timer, Llc 7
#10 Vector Atomic, Inc. 7
#11 HI Llc 6
#12 Formlabs Inc. 5
#13 Vital Connect, Inc. 5
#14 Blancpain Sa 5
#15 Patek Philippe Sa Geneve 5
#16 Iq-analog Corporation 5
#17 Detnet South Africa (pty) Ltd 4
#18 Quantum Valley Ideas Laboratories 4
#19 Swiss Timing Ltd 4
#20 Short Circuit Technologies Llc 4

About This Class

CPC subclass G04F belongs to class G04.

1,418 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 G04F 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 G04F assignees by class footprint. Bubble size = patents in G04F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 G04F assignees by class footprint. Bubble size = patents in G04F. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 46810121416 Patents in G04F Avg claims / patent (company-wide) The Swatch Group Rese…RolexMontres BreguetOmegaVision Works IpStmicroelectronics (R…Eta Manufacture Horlo…ColdquantaTime TimerVector AtomicHiFormlabsVital ConnectBlancpain
Top 14 G04F assignees by class footprint. Bubble size = patents in G04F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class G04F?
CPC subclass G04F covers TIME-INTERVAL MEASURING. It belongs to CPC class G04 (HOROLOGY), with 1,418 US utility patents granted since 2015.
How many patents have been filed in G04F?
1,418 US utility patents were granted in CPC subclass G04F between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in G04F?
Seiko Epson Corporation leads G04F with 150 patents, making it the most active assignee in this technology area.
How is patent data for G04F 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., G04) is a broad technology category. Subclasses like G04F 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.