Marine Exhaust Gas Scrubbers Patents: Who Leads, Gaps 2026
Marine Exhaust Gas Scrubber Patents: Leaders, Filing Trends and Open Claim Space
Concentrated at the top. The five leading assignees hold 49.5% of the 101 records in scope, and the leading ten hold 72.3% — a long tail of single- or few-filing entrants fills the rest of the ranking. Filings rose from zero in 2017 to a peak of 12 in 2020. No growth rate is stated here because fewer than four complete years remain once the roughly 18-month publication lag is accounted for, and the final year in the series is necessarily undercounted.
- 1WARTSILA FINLAND OY14
- 2WAGNER MINING & CONSTR EQUIP11
- 3ALFA LAVAL CORP AB11
- 4SANDVIK MINING & CONSTR CANADA7
- 5PACCAR INC7
See the full marine exhaust gas scrubbers 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 marine scrubber patents
Who holds the most marine exhaust gas scrubber patents?
The dataset ranks 34 companies by record count, with the leading assignee holding 14 of the 101 records in scope. The top five assignees combined hold 49.5% of all records, and the top ten hold 72.3%, so filing activity is concentrated at the top with a long tail of entrants holding only one or two records each. Exact names and counts are shown in the ranking table on this page rather than repeated here, since the ranking updates as new records publish.
What technology areas do most scrubber patents cover?
Most records fall into two IPC subclasses: F01N, covering exhaust silencers and treatment, appears in 67.3% of the 101 records, and B01D, covering separation processes such as filtration, appears in 58.4%. Smaller shares sit in heat recovery, chemical detoxification, mixing, catalysis, solid waste disposal and organic chemistry methods, each at 5.9% or below. Because a record can carry more than one IPC code, these percentages add up to more than 100% and should be read individually, not summed.
When did marine scrubber patent filings peak?
Filing activity in this dataset peaked in 2020 with 12 published records, rising from zero in 2017. Filings in the most recent years are understated because patent publication typically lags the underlying filing by around 18 months, so the true recent-year total will be higher once those applications publish. A reliable multi-year growth rate cannot be computed from the current series for this reason.
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 Marine Exhaust Gas Scrubbers 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.