High Shear and Inline Mixing Patents: Who Leads and Where Claims Concentrate
22.2% of all 10,738 records sit with just five assignees, with the leader alone holding 1,124 records — a concentrated top tier over a long tail of single-filing entrants. Filings climbed to a peak of 502 records in 2017, then declined; the 2021-to-2024 window — the most recent span treatable as complete — fell 43%, from 387 to 221 records. Years from 2025 onward are still under-counted because publication typically lags filing by around 18 months, so the apparent drop-off at the very end of the trend should not be read as the field slowing.
- 1PROCTER & GAMBLE CO10.5%
- 2HRD CORP3.6%
- 3UNILEVER PLC3.0%
- 4UNILEVER NV2.8%
- 5DOW GLOBAL TECHNOLOGIES LLC2.3%
See the full high shear and inline mixing 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
Frequently asked questions
Who holds the most patents in high shear and inline mixing?
One assignee leads the ranked list with 1,124 records, well ahead of the rest of the field — the fifth-ranked assignee holds 249 and the tenth-ranked holds 107. The top five assignees combined account for 22.2% of all 10,738 records in scope, and the top ten for 28.0%. This is a leader-and-long-tail structure: a small number of consumer-products and specialty-chemicals majors hold a meaningful share, while the remainder of the ranked list and the unranked filers thin out quickly.
Is patent filing in high shear mixing declining?
Filings fell from a peak of 502 in 2017 to 221 in 2024, including a documented 43% decline between 2021 and 2024. However, 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months, so the apparent sharper drop in the very latest years overstates any real slowdown. The 2021-2024 window is the most reliable basis for judging the recent trend.
What does US11359157B2 actually cover?
US11359157B2, assigned to Dow Global Technologies LLC and published 2022-06-14, claims a continuous process for making a polyurea concentrate or powder by combining an amine and an isocyanate in a liquid diluent or base oil inside a rotor stator mixer. The claimed concentrate contains roughly 20 to 50 weight percent polyurea, and the resulting powder has a particle size of 2 to 400 microns. It is a process patent tied to grease-thickener manufacturing rather than a claim on rotor-stator mixer hardware in general, so it constrains that specific continuous production route more than it blocks mixer design broadly.
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 High Shear and Inline Mixing 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.