Advanced High Strength Steel Rolling Patents: Top Companies & Trends 2026
Advanced High Strength Steel Rolling Patents: Who Holds the Claims
Concentrated at the top. The top 5 assignees hold 63.2% of all 3,364 records in scope, and the top 10 hold 77.8% — a small group of steelmakers controls most of the filed art. Published filings peaked at 260 in 2017 and declined to 79 by 2024, the last year that can be treated as complete; 2021 to 2024 alone shows a 55% drop. Later years in the chart are still filling in as publications catch up to filing dates, so they should not be read as a continued decline.
- 1JFE STEEL CORP661
- 2NIPPON STEEL CORPORATION632
- 3POHANG IRON & STEEL CO LTD329
- 4KOBE STEEL LTD280
- 5ARCELORMITTAL SA224
See the full advanced high strength steel rolling 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 in advanced high strength steel rolling?
One assignee leads with 661 records out of 3,364 in scope, well ahead of fifth place at 224 and tenth place at 65. The top 5 assignees together hold 63.2% of all records and the top 10 hold 77.8%, so the field is dominated by a small group of integrated steelmakers rather than spread evenly. Anyone doing freedom-to-operate work should prioritise those leading portfolios before widening the search.
Is patent filing in dual phase and TRIP steel slowing down?
Published filings fell from a peak of 260 in 2017 to 79 in 2024, and the 2021-2024 span shows a 55% decline, so activity has genuinely cooled from its peak. However, publication lags filing by roughly 18 months, so the 2025 and 2026 figures in any chart are still incomplete and should not be read as continued decline. The honest read is that the field has pulled back from a 2017 high, with the most recent trend still uncertain.
What technology areas dominate advanced high strength steel patent claims?
Alloy composition (IPC class C22C) and heat treatment of metals (C21D) dominate, appearing in 79.2% and 74.7% of the 3,364 records respectively, meaning most claims combine a chemistry window with a specific thermal process. Coating and surface deposition (C23C) covers 27.8% of records, while rolling-process-specific claims under B21B sit at just 3.4%. That gap between composition claims and rolling-process claims is a useful signal for where the claim space is less crowded.
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 Advanced High Strength Steel Rolling 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.