VRFB Vanadium Supply & Recovery Patent Snapshot
The VRFB vanadium supply and recovery patent space is small and highly concentrated, with just four active filers and the top five applicants accounting for the entirety of the leading hundred filers’ combined output. Activity is in a Growth stage on a multi-year basis, with annual volume having peaked in 2023 before easing — a pattern that reflects both genuine early-field dynamics and publication lag.
Four applicants dominate an emerging, highly concentrated field
Storion Energy LLC leads the ranking with 4 patent families, followed by Largo Clean Energy Corp with 2 patent families; Zhejiang Xingchen New Energy Technology and Huaqin Energy Storage Technology each hold 1 patent family.
The top five filers account for 100% of the ranked applicants visible in this query’ combined total, signalling an extremely concentrated field with no mid-tier cohort yet established — a characteristic of very early-stage technology niches.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Storion Energy LLC | 4 | |
| 2 | Largo Clean Energy Corp | 2 | |
| 3 | Zhejiang Xingchen New Energy Technology Co., Ltd. | 1 | |
| 4 | Huaqin Energy Storage Technology Co., Ltd. | 1 |
Storion Energy’s lead in family count, combined with Largo Clean Energy’s focus on cell and metal-compound claims, suggests that the two Western players are setting the foundational IP framework, while the two Chinese entrants remain at single-family scale.
The most recent filing years (2024–2026) are likely under-counted due to standard patent-publication lag; conclusions about recent activity should be treated as provisional. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2023 filing surge defines the field’s formative wave
Annual filing activity and the technology class mix together reveal a field that mobilised quickly around a single peak year and remains anchored in two IPC branches.
Annual filing trend
Filing activity was negligible before 2020 and then surged sharply in 2023, which registered the highest annual count. The 2024–2026 bars appear low but should be read cautiously given publication lag; the field is still expanding on a multi-year basis even as annual volume has eased from the 2023 peak.
↗ Hover for values · click a bar to ask EurekaTechnology composition
All 8 patent families include claims mapped to H01M (batteries, cells and fuel cells), while 5 also intersect C01G (compounds of other metals, covering vanadium chemistry). The near-total overlap of the two classes reflects the dual nature of the technology: electrolyte system design and vanadium compound handling are tightly coupled.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Concentrated VRFB electrolyte composition and meth…
There is disclosed a method for producing a concentrated VRFB electrolyte composition. The method comprises the following steps: (a) mixing a vanadium, oxide, water and aqueous H<sub>2</sub>SO<sub>4 </sub>in sufficient quantities to produce a reaction mixture comprising a vanadium sulfate at a concentration at least 3.0 M and a total sulfate concentration… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Concentrated VRFB electrolyte composition and meth… | 1 |
| 2 | 全钒液流电池电解液回收优化装置 | 1 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Storion Energy LLC
Storion Energy LLC holds 4 patent families — the largest position in the field — with technology emphasis spanning C01G 31 (vanadium compound chemistry), H01M 6, and H01M 8 (cell and battery systems). Applicant momentum is classified as a new entrant with recent filings of 1 in the tracked window, suggesting its family portfolio was built rapidly and its forward pipeline is still being established.
patent families: 4Largo Clean Energy Corp
Largo Clean Energy Corp holds 2 patent families and shows the broadest technology coverage among all applicants, with claims across H01M 8, C01G 31, and H01M 6 — 6 records in the recent window, making it a new entrant with the highest recent filing activity in the corpus. Its collaboration with Storion Energy further consolidates its position at the centre of the field’s only known IP partnership.
patent families: 2Frequently asked questions
The corpus currently contains 8 patent families filed by 4 distinct applicants. The field is early-stage and the corpus is small enough that a single new entrant could meaningfully shift the competitive balance.
Storion Energy LLC leads with 4 patent families — half of the total corpus. Largo Clean Energy Corp is second with 2 patent families. Both are classified as new entrants based on their recent filing activity.
All 8 patent families are mapped to H01M (batteries, cells and fuel cells). Five of those 8 also cover C01G (compounds of other metals), reflecting the tight coupling between battery-system design and vanadium chemistry in this field.
Yes. There is one recorded co-filing relationship between Largo Clean Energy Corp and Storion Energy LLC. No other collaborative pairings are evidenced in the corpus.
Filings have been made in China, Europe (EPO), Australia, Canada, the United States, and via WIPO (PCT). China and Europe each have 2 filings; the remaining offices each have 1.
The field is classified as Growth: the recent three-year filing window is substantially above the prior three-year window. Annual volume peaked in 2023 and has eased since, though the most recent years are likely under-counted due to publication lag.
Built on Patsnap Open Platform
This report’s underlying patent dataset — filings, assignees, technology clusters — is open for developers via MCP and REST API. Free to start, 10,000 credits, no credit card required.
Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.