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 grant trajectory.
- 701
- US patents granted
- #4/4
- in C25
- 5.9%
- C25 class share
- -3%
- 5-yr velocity
The verdict
According to USPTO PatentsView, Processes For The Electrolytic Removal Of Materials From… ranks #502 of 670 CPC technology areas - 701 US patents granted since 2015, with recorded grant volume down 3% over five years.
- #502
- of 670 CPC technology areas
- 701
- US patents granted, 2015–2025
- Jfe Steel
- leading assignee (23)
- -3%
- grant velocity, last 5 yrs
How C25F's grant cadence moved
Between 2020–2024, C25F recorded 308 grants versus 318 in 2015–2019 (-3% equal-window velocity). Across complete years, output peaked in 2020 at 80 grants and bottomed in 2024 at 49 (+63% peak-over-trough). Lead assignee Pacesetter, Inc. holds 2.9% of the class ; the top three share 6.0%.
Leaderboard read
C25F concentration, lead at 2.9%
Pacesetter, Inc. leads this historical grant record at 2.9% of C25F - us corporation assignees hold 55% of class grants (108 of 197). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.
- Leader's share
- 2.9%
- Top three share
- 6.0%
- Lead over #2
- 6
20 of 701 grants
of the class's recorded grants
more grants than US Synthetic Corporation
Where C25F sits inside C25
Among 4 subclasses in C25 (Electrolytic OR Electrophoretic PROCESSES; Apparatus Therefor), C25F ranks #4 and holds 5.9% of the parent class's 11,805 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.
Rising assignees active in C25F
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 Z Intellectual Property Holding Company, LLC 8.00x 1 → 8 company-wide · 8 in C25F
- #2 Consolidated Nuclear Security, LLC 1.31x 16 → 21 company-wide · 5 in C25F
- #3 Pacesetter, Inc. 1.14x 201 → 229 company-wide · 20 in C25F
- #4 Gold Standard Instruments, LLC 1.00x 2 → 2 company-wide · 7 in C25F
- #5 Faraday Technology Corp. 0.89x 35 → 31 company-wide · 7 in C25F
C25F grants by year, peak 2020 (80)
US utility-patent grants per year in C25F, 2015–2025 - recent five years are down 3% versus 2015–2019.
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
- Pacesetter
Pacesetter, Inc.
20 patents
- Us Synthetic
US Synthetic Corporation
14 patents
- Z Intellectual…
Z Intellectual Property Holding Company, LLC
8 patents
- Faraday Technology 7
Faraday Technology Corp.
7 patents
- Gold Standard… 7
Gold Standard Instruments, LLC
7 patents
- Drylyte S L 7
Drylyte, S.L.
7 patents
- Consolidated Nuclear… 5
Consolidated Nuclear Security, LLC
5 patents
- Roche Sequencing… 4
Roche Sequencing Solutions, Inc.
4 patents
- Novellus Systems 4
Novellus Systems, Inc.
4 patents
- Abiomed 4
Abiomed, Inc.
4 patents
- The University Of… 4
THE University OF Ottawa
4 patents
- Dowa Metaltech 4
Dowa Metaltech Co., Ltd.
4 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.
View data table
| 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 |
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.
Classes near C25F's 701-grant footprint
Nationwide nearest neighbors for C25F (#502 of 670 by volume ; lead share 3.3%) - not the C25 parent-class siblings above.
Questions about C25F
Which company holds the most patents in C25F?
Which C25F assignees grew fastest recently?
How does C25F compare inside parent class C25?
What to do with this data
C25F in context - here's where to go next.
- Pacesetter, Inc. leads C25F with 20 grants in this class. See full portfolio
- C25F ranks #502 of 670 by grant volume among all tracked CPC technology areas. See the ranking
- Inside parent class C25, the largest sibling subclass is C25D with 6,127 grants. Explore C25D
Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.
Methodology - C25F figures are USPTO PatentsView granted-utility totals for this subclass (701 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.