Roll Wear and Roll Cooling Patents: Who Leads, Where the Gaps Are 2026
Roll Wear and Roll Cooling Patents: Filing Trends and Where the Field Is Open
Concentrated at the top. the ranked leaders' top 5 account for 73.2% of all 71 records in scope, and the top 10 reach 90.1% — a small group holds most of the documented filing activity. Filings peaked in 2017 at 12 records. The tracked window from 2021 to 2024 shows a decline from 2 filings to 0, a -100% change; 2025 onward is not yet complete because of publication lag and should not be read as a continued drop.
- 1NOVELIS INC(US)16
- 2DIAMOND INNOVATIONS INC14
- 3SMS SCHLOEMANN SIEMAG AG10
- 4SMS GROUP GMBH7
- 5HITACHI LTD5
See the full roll wear and roll cooling 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 roll wear and roll cooling patents
Who are the leading patent holders in roll wear and roll cooling technology?
The ranking returned for this scope covers 18 companies, and it is concentrated: the top 5 together account for 73.2% of all 71 records in scope, and the top 10 reach 90.1%. The single leading assignee holds 16 records, well ahead of the rest of the field. Beyond the top 10, filing activity thins out quickly into single or double-digit counts, so most competitive risk and most licensing opportunity sits with the handful of leaders rather than the long tail.
Is patent filing in roll wear and roll cooling increasing or decreasing?
Filing peaked in 2017 at 12 records and has since declined; the tracked 2021-2024 window shows a fall from 2 filings to 0, a -100% change over that span. Because publication lags filing by roughly 18 months, the 2025-2026 figures in the underlying data are still incomplete and should not be read as evidence of a further drop. Based on the complete years through 2024, though, filing activity is well below its 2017 peak.
What technology areas do these patents actually cover?
Nearly all records — 94.4% of the 71 in scope — carry the B21B metal-rolling classification, confirming this is fundamentally a rolling-mill technology set. A meaningful secondary cluster covers roll grinding: B24B grinding and polishing appears in 16.9% of records and B24D grinding tools and abrasives in 15.5%, meaning consumable and process design for roll maintenance is claimed almost as often as the rolling mechanics themselves. Alloy composition (C22C), material testing (G01N) and heat treatment (C21D) each appear in only one or two records, marking them as narrow, specific niches.
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 Roll Wear and Roll Cooling 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.