Asphalt Mixing Plant Patents: Who Leads, Where the Gaps Are 2026
Asphalt mixing plant patents: filing trends, leading assignees and open claim space
44.0% of all 455 records sit with just five assignees, and the leader alone holds 74 — filing here is concentrated, not fragmented. Filings peaked at 50 in 2017 and, among years that can be treated as complete, fell from 14 in 2021 to 7 in 2024 — a 50% decline over that span. 2025 and 2026 figures will continue to fill in as publications catch up with filing dates, so they should not be read as a continuation of that decline yet.
- 1ALM HOLDING CO74
- 2ERGON ASPHALT & EMULSIONS INC44
- 3INGEVITY SOUTH CAROLINA LLC29
- 4IOWA STATE UNIV RES FOUND INC27
- 5MEADWESTVACO CORP26
See the full asphalt mixing plants 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 asphalt mixing plant patents
Who holds the most patents on asphalt mixing plant technology?
One assignee leads clearly with 74 of the 455 records in scope, ahead of the fifth-ranked holder at 26 and the tenth-ranked at 17. The top five assignees together hold 44.0% of all records, and the top ten hold 66.6%, so ownership is concentrated at the top rather than spread evenly across the field. Beyond that group, the ranking extends to 100 companies with progressively smaller counts, many filing on just one or two records around specific plant components.
Is patent filing activity in asphalt mixing plants growing or slowing?
Filings peaked in 2017 at 50 records and have generally run lower since. Among years that can be treated as complete, filings fell from 14 in 2021 to 7 in 2024, a 50% decline over that span. The 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months, so it is too early to call the very latest trend a continued decline rather than a reporting gap.
What technology areas dominate asphalt mixing plant patents?
Polymer composition claims (IPC class C08L) appear in 67.0% of the 455 records in scope, making binder and additive chemistry the largest single technology cluster by a wide margin. Roads and pavements claims (E01C) follow at 30.3%, and polymer additive claims (C08K) at 26.6%. Mixing hardware itself, classified under B28C, appears in only 5.5% of records, indicating that most patent activity concerns what goes into the asphalt mix rather than the physical mixing equipment.
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 Asphalt Mixing Plants 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.