Titanium Sponge Patents: Who Leads, Where the Gaps Are 2026
Titanium sponge and Kroll process patents: who holds the ground and where it's still open
33.6% sits with five filers. The top 5 assignees combine for 154 of 459 records in scope, a concentration that makes freedom-to-operate checks against a short list worthwhile before broader searching. Filings ran from 7 in 2017 to a peak of 12 in 2019, then eased; the 2021-to-2024 span moved from 6 to 5 filings, a -17% change. Treat 2025 and 2026 figures as incomplete rather than as evidence of decline, since publication lag has not caught up with those filing years yet.
- 1SHENZHEN SUNXING LIGHT ALLOYS MATERIALS CO LTD36
- 2ATS MER LLC35
- 3MATERIALS & ELECTROCHEM RES35
- 4ICSIP PTY LTD28
- 5COMMONWEALTH SCI & IND RES ORG20
See the full titanium sponge and kroll process improvements 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 this landscape
Who holds the most patents on titanium sponge production and the Kroll process?
The leading assignee in this dataset holds 36 of the 459 records in scope, with the top five combined accounting for 154 records, or 33.6% of the field. That is a meaningful concentration, but it still leaves roughly two-thirds of the field spread across a long tail of smaller filers, including single-patent entrants. Anyone doing a freedom-to-operate check should start with the concentrated leaders and then widen the search rather than assuming coverage is complete after the top few names.
Is filing activity in Kroll process technology growing or slowing?
Filings peaked at 12 in 2019 and by 2024, the most recent year with complete data, had settled at 5, down from 6 in 2021 — a -17% change over that span. This looks more like a maturing core process than an abandoned one, since patenting activity in downstream powder and alloy handling continues. Figures for 2025 and 2026 are still incomplete because publication typically lags filing by about 18 months, so it is too early to call the current trajectory a decline.
What technology areas dominate titanium sponge patent filings?
Metal extraction and refining, IPC class C22B, appears in 73.4% of the 459 records in scope, making it by far the dominant classification. Powder metallurgy (B22F) and alloys (C22C) follow at 17.9% and 16.3% respectively. Because a single patent record often carries several IPC classes, these percentages overlap rather than summing to 100%, and they should be read as a map of claim density rather than a strict breakdown of the field.
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 Titanium Sponge and Kroll Process Improvements 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.