Flexible Slabstock Foam Patents: Top Companies & Filing Trends 2026
Flexible Slabstock Foam Production Patents: Who Files, What They Claim
33.5% of all 3,646 records sit with just five assignees, while the ranked leaders extend to 100 companies with a long single-filing tail below them. Annual filings peaked at 156 in 2017. The 2021-to-2024 span, the most recent period the dataset can treat as complete given an 18-month publication lag, shows a decline from 62 to 49 filings, a 21% drop. Years after 2024 are still filling in and should not be read as a continued fall.
- 1EVONIK OPERATIONS GMBH10.5%
- 2DOW GLOBAL TECHNOLOGIES LLC10.3%
- 3THE DOW CHEM CO5.3%
- 4HUNTSMAN INTERNATIONAL LLC3.8%
- 5BASF SE3.7%
See the full flexible slabstock foam production 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
Questions practitioners ask about this field
Who are the leading patent holders in flexible slabstock foam production?
The ranking covers 100 companies, with a single leader holding 382 records, well ahead of the fifth-placed assignee at 135. The top five assignees combined account for 33.5% of all 3,646 records in scope, and the top ten reach 44.3%. Below that concentration sits a long tail of companies with only a handful of filings each, so freedom-to-operate work should prioritise the leading names first and treat the tail as a secondary check.
Is patent filing activity in this space growing or shrinking?
Filing activity peaked in 2017 at 156 records and has since stepped down; the most recent complete three-year window shows a 21% decline from 62 filings in 2021 to 49 in 2024. Because patent publication lags actual filing by roughly 18 months, the 2025 and 2026 figures in the dataset are still incomplete and should not yet be read as confirming a continued fall. A fair read is that activity has cooled from its 2017 peak but the very latest trend is not yet settled in the data.
What technical areas does flexible slabstock foam patent activity cover?
Core reaction chemistry dominates: C08G, covering condensation polymers, appears in 78.4% of the 3,646 records in scope. Processing and solution-related claims (C08J) follow at 35.2%, with additive use (C08K) and polymer compositions (C08L) each in the 15-16% range, and shaping-related claims (B29C) at 6.0%. Because records commonly carry more than one IPC class, these figures add up to well over 100% and should not be read as mutually exclusive shares of a whole.
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 Flexible Slabstock Foam Production 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.