PlainPatent

CPC technology class · C25

C25F - Processes FOR THE Electrolytic Removal OF Materials FROM…

Processes for the electrolytic removal of materials from objects; apparatus therefor. 701 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

701
US patents granted
C25
Parent CPC class
20
Active assignees
+6%
5-yr velocity

The verdict

Processes FOR THE Electrolytic Removal OF Materials FROM… ranks #502 of 670 CPC technology areas - 701 US patents granted since 2015, with filing up 6% over five years.

#502
of 670 CPC technology areas
701
US patents granted, 2015–2025
Jfe Steel
leading assignee (23)
+6%
filing velocity, last 5 yrs
Top assignee: JFE Steel Corporation (23 patents)

CPC subclass C25F - PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR - covers 701 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C25 (ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR). See our CPC classification guide for how the system works.

The competitive landscape in C25F is shaped by 20 distinct companies actively filing in this space. JFE Steel Corporation leads with 23 patents, followed by US Synthetic Corporation at 14 grants and Z Intellectual Property Holding Company, Llc at 8.

Filing activity in C25F is up 6% 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 C25F innovation accelerating?

US utility-patent grants per year in C25F, 2015–2025 - recent five years are up 6% versus 2015–2019.

20406080100 20152016201720182019202020212022202320242025 28

Who leads C25F?

The 12 most active assignees in PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR - wider bars mean more grants

patents

What this shows Jfe Steel is the most active filer in C25F, holding 23 of the 701 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 C25F
Rank Company Patents in C25F
#1 Pacesetter, Inc. 20
#2 US Synthetic Corporation 14
#3 Z Intellectual Property Holding Company, Llc 8
#4 Faraday Technology Corp. 7
#5 GOLD Standard Instruments, Llc 7
#6 Drylyte, S.l. 7
#7 Consolidated Nuclear Security, Llc 5
#8 Roche Sequencing Solutions, Inc. 4
#9 Novellus Systems, Inc. 4
#10 Abiomed, Inc. 4
#11 THE University OF Ottawa 4
#12 DOWA Metaltech Co., Ltd. 4
#13 Trutag Technologies, Inc. 4
#14 Kings Mountain International, Inc. 4
#15 Tech Met, Inc. 4
#16 Arkray, Inc. 3
#17 Atotech Deutschland Gmbh & Co. KG 3
#18 Vactronix Scientific, Llc 3
#19 ACM Research (shanghai), Inc. 3
#20 Varel International IND., L.l.c. 3

About This Class

CPC subclass C25F belongs to class C25.

701 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 C25F 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 C25F assignees by class footprint. Bubble size = patents in C25F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 C25F assignees by class footprint. Bubble size = patents in C25F. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 0510152025 Patents in C25F Avg claims / patent (company-wide) PacesetterUs SyntheticZ Intellectual Proper…Faraday TechnologyGold Standard Instrum…Drylyte S LConsolidated Nuclear…Roche Sequencing Solu…Novellus SystemsAbiomedThe University Of Ott…Dowa MetaltechTrutagKings Mountain Intern…
Top 14 C25F assignees by class footprint. Bubble size = patents in C25F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C25F?
CPC subclass C25F covers PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR. It belongs to CPC class C25 (ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR), with 701 US utility patents granted since 2015.
How many patents have been filed in C25F?
701 US utility patents were granted in CPC subclass C25F between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C25F?
JFE Steel Corporation leads C25F with 23 patents, making it the most active assignee in this technology area.
How is patent data for C25F 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., C25) is a broad technology category. Subclasses like C25F 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.