Carbon Capture Sorbent Patents: Who Leads, Filing Trends 2026
Carbon Capture Sorbents and Processes: Patents, Filers and Where Claims Are Still Open
Filing growth has flattened. annual filings rose from 25 in 2017 to a peak of 255 in 2024, but the 2022 midpoint of 205 shows the curve levelling off rather than accelerating into the most recent years. Filings climbed from 25 in 2017 to a peak of 255 in 2024. The midpoint year, 2022, already sat at 205 — closer to the peak than to the starting point — which signals a levelling of growth rather than continued acceleration. Combined with the 18-month publication lag, the apparent 2026 slowdown to 47 should be read cautiously rather than taken as an actual contraction.
- 1EXXONMOBIL TECHNOLOGY & ENGINEERING CO4.9%
- 2SIEMENS ENERGY GLOBAL GMBH & CO KG3.8%
- 3RGT UNIV OF CALIFORNIA3.2%
- 4ROBERT BOSCH GMBH2.1%
- 5SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV2.0%
See the full carbon capture sorbents and processes 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 carbon capture sorbent patents
How many carbon capture sorbent patents have been filed recently?
This dataset covers 1,369 patent families filed between 2017 and 2026 under a search focused on sorbent chemistries and capture processes. Annual filings rose from 25 in 2017 to a peak of 255 in 2024, with the most recent years understated because publication typically lags filing by around 18 months. The 2022 midpoint of 205 filings shows that most of the growth had already happened by the middle of the window rather than accelerating toward the end.
Which companies are most active in carbon capture sorbent patents?
The ranking in this dataset is dominated by a mix of energy majors, industrial gas and equipment firms, and university research groups, several of which co-file together. Strong co-assignee pairings include Chevron U.S.A. Inc. with University of South Alabama, and ExxonMobil Technology and Engineering Company with The Regents of the University of California. However, recent-year momentum has reversed for a number of previously active filers, including several showing a full drop to zero filings in the latest year, so current leadership does not always match historical filing volume.
What IPC classes matter most for carbon capture sorbent patents?
B01D, covering separation processes such as filtration and adsorption, accounts for 1,282 of the 1,369 records in this corpus — by far the largest share. B01J (chemical and physical processes, catalysis) and C01B (non-metallic elements and inorganic compounds) follow at 361 and 232 respectively. Smaller counts in C25B, C07C, C01F, C02F and F01K mark adjacent process routes such as electrolytic conversion and thermal integration that intersect the core sorbent claim space without dominating it.
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 Carbon Capture Sorbents and Processes 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.