Pellet Induration Furnaces Patents: Who Leads, Trends 2026
Pellet Induration Furnace Patents: Filing Trends and Leading Assignees
Filing peaked in 2021 at 10 records then fell to 0 by 2024, a -100% swing that predates the usual 18-month publication lag — later years will still fill in, but the drop-off from peak is real. Filings rose to a peak of 10 in 2021 before falling to 0 by 2024, the last year treatable as complete; 2025 and 2026 are still filling in under the usual publication lag and should not be read as a continued decline.
- 1LOUSSAVAARA KIIRUNAVAORA AB15
- 2TATA CONSULTANCY SERVICES LTD14
- 3VALE SA13
- 4HER MAJESTY IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF ENERGY MINES AND RESOURCES CANADA11
- 5FORM ENERGY INC10
See the full pellet induration furnaces 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 pellet induration furnace patents
What is a pellet induration furnace and why does it attract patent activity?
A pellet induration furnace hardens green iron-ore pellets through controlled heating stages, typically on a moving grate or in a grate-kiln configuration, so the pellets gain the compressive strength needed for blast furnace or direct-reduction feed. Patent activity concentrates on the process-control layer — thermal profile management, gas recirculation, dust carryover and refractory wear — rather than on the basic furnace mechanics, which are largely settled art. This dataset of 86 records reflects that split, with metal extraction and refining classification (C22B) covering over half of records alongside furnace and combustion hardware classes.
Who are the leading patent holders in induration furnace technology?
The ranking in this dataset lists 15 organisations, spanning mining companies, steel producers, process-technology licensors and individual inventors. The leading assignee holds 15 families, with the fifth-ranked organisation at 10 and the tenth at 3 — a gradual taper rather than one company holding an outsized share. No organisation tracked for recent-year momentum shows growth in the latest year, so leadership here reflects historical filing volume more than current activity.
Is patent filing in this field growing or shrinking?
Filing peaked at 10 records in 2021 and fell to 0 by 2024, the most recent year that can be treated as complete, giving a documented -100% swing over that span. Figures for 2025 and 2026 are still incomplete because publication typically lags filing by around 18 months, so the true trajectory for those years is not yet visible. Based on the complete data through 2024, activity has pulled back sharply from its 2021 peak.
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 Pellet Induration Furnaces 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.