Pneumatic Conveying Patents: Who Leads, Where the Gaps Are 2026
Dilute and Dense Phase Pneumatic Conveying Patents: Who Holds the Ground
Filing peaked in 2017 at 20 records and the 2021-to-2024 span shows a 56% decline (9 to 4), a genuine cooling rather than a lag artefact for that window. Filings hit 20 in 2017, the high point of the window. The 2021-to-2024 stretch fell from 9 to 4 records, a 56% drop over three years – a slowdown in an already mature filing base, not a data artefact of publication lag.
- 1LHOIST RECH & DEV SA23
- 2CHEVRON PHILLIPS CHEMICAL COMPANY LP20
- 3PNEUMATIC PROCESSING TECHNOLOGIES LLC16
- 4J O A TECH BEHEER16
- 5NAT OILWELL VARCO LP15
See the full dilute and dense phase pneumatic conveying 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 in dilute and dense phase pneumatic conveying?
The dataset’s leading assignee holds 23 of the 292 records in scope, noticeably ahead of fifth place at 15 and tenth place at 9. The top 5 assignees combined hold 90 records, 30.8% of the total, and the top 10 hold 142 records, 48.6%. That leaves the remaining 90 ranked companies filing in much smaller numbers, so the field has a concentrated head and a long tail rather than an even spread.
Is pneumatic conveying patent filing still growing?
No – filing peaked in 2017 at 20 records and has declined since. The clearest complete-year evidence is the 2021-to-2024 span, which fell from 9 records to 4, a 56% decrease. Figures for 2025 and 2026 are still incomplete because publication typically lags filing by around 18 months, so the most recent years should not be read as a further collapse, but the multi-year direction through 2024 is a real decline.
What technology areas overlap most with pneumatic conveying claims?
B65G (conveying and material handling) is the largest single IPC subclass, appearing in 46.9% of the 292 records. Beyond that, B01J (chemical and physical processes, 13.7%), C08F (addition polymers, 10.3%) and E21B (drilling, 8.9%) all carry meaningful record counts, showing conveying hardware claims are frequently embedded inside chemical processing, polymer production and well-servicing patents rather than filed as standalone equipment claims.
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 Dilute and Dense Phase Pneumatic Conveying 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.