Ammonia Storage & Transport Patents: Who Leads, Where Gaps Are 2026
Ammonia storage and transport patents: mapping who holds the steel and containment claims
Concentrated at the top. The top 5 of 17 ranked assignees hold 70.6% of all 34 records in scope, with the leader alone filing 7. Filings sit at zero in 2017 and build unevenly toward a peak of 8 records in 2024, the most recent complete year before publication lag takes effect. With fewer than four complete years of usable data once lag is accounted for, no growth rate can be responsibly stated here.
- 1JFE STEEL CORP7
- 2ACWA POWER CO6
- 3KAWASAKI STEEL CORP4
- 4ASAHI KASEI KOGYO KABUSHIKI KAISHA4
- 5NIPPON STEEL CORPORATION3
See the full ammonia storage transport and safety 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 ammonia storage and transport patents
Who holds the most patents on ammonia storage and transport safety?
In this 34-record dataset, filing is concentrated: the top-ranked assignee alone holds 7 records, and the top 5 of 17 ranked assignees together account for 70.6% of all records in scope. The leading filers are steelmakers focused on stress-corrosion-cracking-resistant materials for liquid ammonia service, rather than tank-design or logistics specialists. Anyone assessing competitive position in this space should start with that top-5 group before looking at the longer tail of single-filing entrants.
What technology areas get the most patent claims in ammonia storage and safety?
Alloy composition (IPC class C22C) and ammonia/nitrogen chemistry (C01C) are the two most claimed areas, each covering 26.5% of the 34 records in scope. Heat treatment of metals (C21D) follows at 23.5%, and pressure-vessel and gas-storage design (F17C) sits at 20.6%. Because a single record can carry multiple IPC classes, these percentages add up to more than 100% of the record total — they describe claim density, not a mutually exclusive breakdown.
How many ammonia storage and transport patent families exist and how fast is filing growing?
This dataset covers 34 published records dated 2015 through 2026, with a filing peak so far of 8 records in 2024. Because publication typically lags filing by about 18 months, the 2025 and 2026 figures are understated and should not be read as a slowdown. There are fewer than four complete filing years once that lag is accounted for, so no reliable growth rate can be stated from this data.
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 Ammonia Storage Transport and Safety 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.