Mixed-Matrix Membrane Patents: Who Leads, Where the Gaps Are 2026
Mixed-Matrix Gas-Separation Membrane Patents: Filing Trends and Where the Field Concentrates
27.0% of all 998 records sit with just five assignees, and 40.9% with ten — a field with a defined leadership group rather than a flat field of single filers. Filings rose from 41 in 2017 to a peak of 85 in 2021, then eased to 70 by 2024 — an 18% decline over that three-year window. 2025 and 2026 counts are lower still, but that reflects publication lag of roughly 18 months rather than a real drop in filing.
- 1UOP LLC89
- 2CHEVRON USA INC70
- 3KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS41
- 4MEMBRANE DISTILLATION DESALINATION LTD36
- 5VLAAMSE INSTELLING VOOR TECHNOLOGISCH ONDERZOEK NV (VITO)33
See the full membranes & separation polymers — mixed-matrix gas-separation membranes patent landscape 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 mixed-matrix membrane patents
How many patents exist for mixed-matrix gas-separation membranes?
The dataset in scope for this landscape contains 998 published records filed between 2015 and mid-2026. This covers filings indexed under mixed-matrix membrane, MMM gas separation and related polymer-filler membrane terms, combined with polymer or selective membrane separation terms. The true worldwide total is likely somewhat higher once records outside this search string and time window are counted, and the most recent one to two years are understated due to publication lag.
Who are the leading patent holders in mixed-matrix membrane technology?
The ranking covers 100 assignees, with the leader holding 89 records against 33 for fifth place and 25 for tenth — a clear leadership gap rather than a flat field. The top five assignees combined hold 27.0% of all 998 records, and the top ten hold 40.9%, leaving close to 60% of filings spread across a long tail of smaller filers. This is a concentrated-but-not-closed field: a defined leadership group exists, but most records sit outside it.
Is filing activity in mixed-matrix membranes growing or slowing?
Filing rose from 41 records in 2017 to a peak of 85 in 2021, then eased to 70 by 2024 — an 18% decline over that three-year span. This looks like a maturing filing pattern around core filler-polymer chemistries rather than a collapse in interest. Counts for 2025 and 2026 appear lower still in the raw data, but that reflects the roughly 18-month lag between filing and publication, not a real drop-off.
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 Membranes & Separation Polymers — Mixed-Matrix Gas-Separation Membranes Patent Landscape 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.