Continuous Casting Mould Behaviour Patents: Who Leads and Where Filings Are Slowing
Concentrated at the top. The five most active filers account for 64.4% of all 191 records in scope, and the top ten reach 79.6%. Activity peaked in 2018 at 10 filings. The 2021-to-2024 window shows a clear pullback, from 6 down to 2, a 67% decline over three years. Counts for 2025 and 2026 are still incomplete because publication typically lags filing by around 18 months, so the most recent bars understate real activity.
- 1KAWASAKI STEEL CORP30
- 2POHANG IRON & STEEL CO LTD26
- 3JFE STEEL CORP25
- 4ABB AB21
- 5NIPPON STEEL CORPORATION21
See the full continuous casting mould behaviour 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 this landscape
Who holds the most patents on continuous casting mould technology?
One assignee leads with 30 of the 191 records in this dataset, noticeably ahead of the fifth-ranked filer at 21. The five most active assignees combined account for 64.4% of all records, and the top ten reach 79.6%. This is a concentrated field: a small group of integrated steelmakers and equipment suppliers controls most of the documented claim space, and the remaining activity is spread thinly across 59 ranked companies in total.
Is patent filing activity in continuous casting mould behaviour growing or declining?
Filings peaked at 10 in 2018 and have since pulled back, falling from 6 in 2021 to 2 in 2024 -- a 67% decline over that three-year window. That said, publication typically lags filing by around 18 months, so figures for 2025 and 2026 are still incomplete and should not be read as confirmation of a continued slowdown. The safest read is that the field cooled through the early 2020s relative to its 2018 peak, with the very latest trend still unresolved.
What does US8210238B2 actually cover?
US8210238B2, assigned to POSCO, covers a continuous casting machine and method that delivers molten mould flux directly into the mould through a heated injection tube, rather than adding solid flux that melts in place. Key elements include a mould cover, a separate flux-melting unit, and an injection tube with its own heater. For anyone designing a flux-delivery system, the claims are most relevant if your design also melts flux externally and delivers it through a covered, heated conduit into the mould cavity; delivery mechanisms that add flux in solid form at the meniscus sit outside this specific claim structure.
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 Continuous Casting Mould Behaviour 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.