Perfluorinated Ion Exchange Membrane Patents: Leaders & Trends 2026
Perfluorinated Ion Exchange Membrane Patents: Who Leads and Where the Claim Space Is Still Open
16.7% concentration at the top. The five leading assignees account for 2,388 of 14,289 records in scope — a dense core with a long tail below it. Annual filings rose to a peak of 697 records in 2021, then eased to 585 by 2024 — a 16% decline over that three-year span. Records from 2025 and 2026 are undercounted because publication typically lags filing by around 18 months, so the most recent bars should be read as provisional rather than a confirmed downturn.
- 13M INNOVATIVE PROPERTIES CO5.3%
- 2EI DU PONT DE NEMOURS & CO3.8%
- 3TOYOTA JIDOSHA KK3.5%
- 4GM GLOBAL TECHNOLOGY OPERATIONS LLC2.4%
- 5NISSAN MOTOR CO LTD1.9%
See the full perfluorinated ion exchange membranes 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 this landscape
Who holds the most patents on perfluorinated ion exchange membranes?
The assignee ranking in this dataset covers 100 companies, with the leading filer holding 752 of the 14,289 records in scope. The top five combined account for 2,388 records, or 16.7% of the field, while the top ten reach 24.3%. The list is dominated by automakers, fluoropolymer chemical majors and fuel-cell component makers, reflecting the technology’s primary use in hydrogen fuel cell stacks.
Is patent filing in this space growing or slowing down?
Filing volume peaked in 2021 at 697 records and had declined 16% to 585 records by 2024, the most recent year with reliable publication coverage. Figures for 2025 and 2026 appear lower still, but that reflects the roughly 18-month lag between filing and publication rather than an actual drop in activity. Treat the 2021-to-2024 trend as the reliable signal and the most recent two years as still filling in.
What applications dominate perfluorinated membrane patents besides fuel cells?
Fuel cell and battery applications, classified under H01M, appear on 71.7% of the 14,289 records and are by far the largest use case. Polymer processing and solution chemistry (C08J) follow at 21.7%, and electrolytic production of compounds (C25B) at 17.6%, reflecting use in chlor-alkali and water electrolysis. Separation processes and condensation polymer chemistry each appear on roughly 10-11% of records, marking smaller but distinct application clusters.
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 Perfluorinated Ion Exchange Membranes 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.