Organic Flow Battery Patents: Who Leads, Where the Gaps Are 2026
Organic and Aqueous Flow Chemistry Patents: Filing Trends and Leading Claimants
Filings rose +433% from 2021 to 2024, the fastest sustained run in this dataset, peaking at 16 records in 2024 before publication lag thins the 2025-2026 count. Annual filings moved from 4 in 2017 to a peak of 16 in 2024, including the +433% jump recorded between 2021 (3 filings) and 2024. Treat 2025 and 2026 figures as incomplete rather than as a slowdown — the drop reflects publication lag, not falling interest.
- 1XL BATTERIES INC16
- 2南加利福尼亚大学14
- 3哈佛大学校长及研究员协会6
- 4巴特尔纪念研究院5
- 5西安交通大学3
See the full organic and aqueous flow chemistries analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions on organic and aqueous flow battery patents
What counts as an organic or aqueous organic redox flow battery in patent terms?
In this dataset, records are pulled together by pairing flow-battery terminology with organic or aqueous-organic redox couples, including quinone redox couples, and specific technical failure modes such as molecular stability, solubility limits, active-species crossover, decomposition pathways, cell-voltage-window and redox-potential tuning. Every one of the 52 records in scope also carries an H01M classification, meaning they are formally classified as battery, cell or fuel-cell technology. Practically, this covers flow-cell architectures where the redox-active species is a carbon-based molecule rather than a transition-metal ion, aimed at lower material cost and reduced toxicity compared with vanadium or other metal-based flow chemistries.
Who holds the most patents in organic and aqueous flow battery chemistry?
The ranked leader in this dataset holds 16 records, well ahead of the rest of the field, which falls to 3 records by fifth place and just 1 record at tenth. The ranking includes ten assignees in total, spanning universities, public research institutes and at least one named battery company, so the field is not dominated by a single commercial player in the way some more mature battery chemistries are. Anyone assessing freedom to operate should look closely at the leader’s full portfolio rather than assuming coverage is evenly spread.
Is the organic flow battery patent field still growing?
Yes, based on the filing trend available: annual filings grew from 4 in 2017 to a peak of 16 in 2024, including a +433% increase between 2021 and 2024 alone. Filing counts shown for 2025 and 2026 are lower, but that reflects the roughly eighteen-month lag between filing and publication rather than a genuine slowdown, so those most recent years should not be read as a declining trend. 2024 is the most recent year in this dataset that can be treated as a complete picture of filing activity.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Organic and Aqueous Flow Chemistries covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.