Pulverized Coal Injection Patents: Top Companies & Trends 2026
Pulverized Coal Injection Patents: Who Leads and Where Filings Concentrate
64.8% concentration. The top 5 of 74 ranked assignees account for 210 of 324 records in scope — filings sit heavily with a small group of steelmakers and gas suppliers. Annual filings rose from zero in 2017 to a peak of 61 in 2022, then eased to 21 by 2024 — still a +31% increase over the 2021 count of 16. Because publication trails filing by about 18 months, the lower counts shown for 2025 and 2026 understate real filing activity rather than signal a slowdown.
- 1CARBON TECHNOLOGY HOLDINGS LLC69
- 2PAUL WURTH SA62
- 3JFE STEEL CORP50
- 4AIR PROD & CHEM INC16
- 5LOUSSAVAARA KIIRUNAVAORA AB13
See the full pulverized coal injection 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 pulverized coal injection patents
Who are the leading patent holders in pulverized coal injection technology?
The ranked list covers 74 assignees, with the leader credited with 69 of the 324 records in scope and the top 5 combined holding 210 records, or 64.8% of the total. This group spans integrated steelmakers, industrial gas suppliers and biocarbon materials specialists rather than a single dominant filer type. Beyond the top 10 — who together hold 78.4% of records — filing activity spreads thinly across a long tail of companies and research institutes with only a handful of filings each.
Is pulverized coal injection patent filing still growing?
Filings rose from 16 in 2021 to 21 in 2024, a +31% increase, after peaking at 61 in the single year 2022. The apparent decline after 2022 should be read carefully: patent publication typically lags filing by around 18 months, so the most recent years in any trend chart are always undercounted. Based on the complete-year data through 2024, filing activity has grown rather than slowed.
What technology areas dominate pulverized coal injection patents?
C21B, the IPC class covering blast furnace iron production, appears in 66.4% of the 324 records and is by far the dominant classification. C10L (fuels) and C10B (coke and destructive distillation) each appear in roughly 17% of records, showing significant overlap between PCI patenting and fuel or coke chemistry work. Furnace hardware and control classes — F27B, F27D and G05B — each cover a smaller single-digit-to-mid-teens share, indicating comparatively less-claimed territory around furnace accessories and automated control.
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 Pulverized Coal Injection 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.