Solid Sorbent DAC Patents: Who Leads, Where the Gaps Are 2026
Solid Sorbent Direct Air Capture Patents: Who Holds the Claims
Concentrated at the top. the five largest assignees hold 38.7% of all 452 records in scope, and the leading ten hold 52.7% — a long tail files the rest. Annual filings rose from 19 in 2017 to a peak of 92 in 2023. The 2021→2024 window shows a 12% increase (69 to 77 records), the most recent span that can be read as complete; 2025 and 2026 figures will continue to fill in as publications catch up with filing dates.
- 1GLOBAL THERMOSTAT OPERATIONS LLC64
- 2CLIMEWORKS AG38
- 3GEORGIA TECH RES CORP37
- 4ATWOOD MATTHEW19
- 5EXXONMOBIL TECHNOLOGY & ENGINEERING CO17
See the full solid sorbent direct air capture 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 about solid sorbent DAC patents
Who holds the most patents in solid sorbent direct air capture?
One assignee leads the ranked field with 64 records, well ahead of fifth place at 17 and tenth place at 11. The top five assignees combined hold 38.7% of all 452 records in scope, and the top ten hold 52.7%, so roughly half the field is spread across a long tail of smaller filers. This concentration pattern is common in a technology where a handful of early movers staked out the core process claims before a wider field of universities and research organisations joined in.
Is solid sorbent DAC patent filing still growing?
Filing volume rose from 69 records in 2021 to 77 in 2024, a 12% increase over that window, with 2023 the peak year so far at 92 records. The 2025 and 2026 figures look lower, but publication typically lags filing by around 18 months, so those years are still filling in rather than showing a genuine slowdown. Judged on the last complete window, filing activity in this field was still rising, not falling.
What technology areas do most solid sorbent DAC patents cover?
88.1% of the 452 records in scope carry an IPC classification in B01D, covering separation processes such as filtration and adsorption hardware, and 46.9% carry B01J, covering catalytic and related chemical processes. Smaller shares touch inorganic compound chemistry, electrolytic regeneration and polymer processing, each under 6% of records. Because a single record can carry several classifications, these figures add up to more than 100% and should not be read as a breakdown of a whole.
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 Solid Sorbent Direct Air Capture 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.