Sintering Furnace Patents: Who Leads, Where the Gaps Are 2026
Sintering Furnace and Atmosphere Control Patents
Concentrated but not locked up. the top 5 assignees hold 20.2% of all 198 records in scope and the top 10 hold 32.8%, leaving most of the field to single- or few-filing entrants. Filings rose from 2 in 2017 to a peak of 22 in 2020, then continued growing through the early 2020s: the documented 2021-to-2024 span shows an increase from 7 to 11 filings, a 57% rise. 2025 and 2026 figures are still incomplete due to publication lag and should not be read as a slowdown.
- 1BOC GROUP INC10
- 2SANDVIK INTELLECTUAL PROPERTY AB9
- 3MANTLE INC9
- 4MARKFORGED INC6
- 5SUMITOMO ELECTRIC INDUSTRIES LTD6
See the full sintering furnaces and atmosphere control 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 are the leading patent holders in sintering furnace technology?
The dataset’s ranked leader holds 10 of the 198 records in scope, with the lead narrowing to 6 records by fifth place and 4 by tenth. The top 5 assignees together account for 20.2% of all records and the top 10 for 32.8%, meaning no single company controls the field. The remaining two-thirds of filings belong to a long tail of 100 ranked companies, most filing only a handful of times each.
Is sintering furnace patent filing activity growing or slowing down?
Filing activity peaked in 2020 at 22 records, but growth resumed afterward: the documented span from 2021 (7 filings) to 2024 (11 filings) shows a 57% increase. Figures for 2025 and 2026 look lower only because publication typically lags actual filing by around 18 months, so those years are still incomplete rather than showing a real decline. 2024 is the most recent year that should be treated as a complete data point.
Which country dominates sintering furnace patent filings?
China is by far the largest filing venue in this dataset, with 95 of the 198 records filed there, compared with 33 in the United States, 23 at the EPO, 17 in Japan, 7 via WIPO/PCT and 6 in Canada. Anyone doing freedom-to-operate work in this space should weight Chinese filings first, since they outnumber the next four venues combined. This also reflects where much of the underlying manufacturing capacity for sintered parts is concentrated.
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 Sintering Furnaces and Atmosphere Control 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.