Flow Cytometer Fluidics and Optics Patents: Top Companies & Trends 2026
- Five companies hold 75.0% of the field. 126 of the 168 records in scope sit with the top five assignees, leaving a genuinely thin tail below them.
- Filing has pulled back sharply from its 2021 peak. Annual filings ran from 13 in 2021 down to 3 in 2024, a -77% swing over that span, though the most recent one or two years are still filling in as publications lag filing.
- Acoustic-focusing patents dominate the citation record. The four most-cited documents in the set all describe acoustic radiation pressure methods, not classical hydrodynamic sheath flow.
Filing growth compares 2021 (13 records) with 2024 (3) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 168 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This review covers patent families addressing flow cytometer fluidics and optics filed or published between 2015 and mid-2026, drawn from a search combining core-stream stability, laser alignment, coincidence rate, sheath consumption, clog detection and sensitivity-specification language with hydrodynamic focusing and cytometer optics terms. The scope spans classical sheath-flow instrumentation as well as acoustic-focusing alternatives that have generated a disproportionate share of citations. 168 published records sit in scope, ranked across 49 distinct assignees.
The dataset mixes two technical lineages: sheath-fluid hydrodynamic focusing, the long-standing basis for commercial cytometers, and acoustic radiation pressure focusing, which appears repeatedly among the most-cited prior art. Readers should treat citation counts as a signal of influence within this corpus rather than of which approach is winning commercially today, since older acoustic-focusing filings have had more years to accumulate citations.
Filing trend and technology composition
Two views of the same 168 records: how filing volume moved year over year, and which IPC subclasses the claims actually sit in.
Filing trend, 2017-2026
Annual filings rose to a peak of 13 in 2021, then fell to 3 by 2024 (-77% over that span). 2025 and 2026 show only a handful of published records so far, which is expected given the roughly 18-month lag between filing and publication rather than evidence of a further decline.
Technology composition by IPC subclass
G01N (material analysis and testing) covers 89.9% of the 168 records, confirming that most claims are written as measurement or analysis methods rather than as pure mechanical fluidics. Acoustics-related G10K appears in 11.9% of records, tracing the acoustic-focusing lineage, while B01L (lab apparatus, 15.5%) and F17D/F16K (pipeline and valve components, 8.9% and 7.7%) mark the mechanical sheath-delivery side of the field. Because a single record can carry several IPC codes, these shares add up to more than 100% of the record total.
Shares are the percentage of the 168 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Flow Cytometer Fluidics and Optics with Eureka
This page is one run against one query. Ask Eureka your own question about flow cytometer fluidics and optics and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records in this dataset
Particle analyzing systems and methods using acoustic radiation pressure (US8846408B2)
A method for optimizing particle throughput in a particle analyzer includes determining an optimal concentration of particles in a sample for achieving a user defined coincidence rate; adjusting the concentration of the particles in the sample to the determined optimal concentration to achieve the user defined coincidence rate; acoustically focusing the particles in the particle analyzer; adjusting a flow rate of the particles to achieve a user defined transit time of the particles; and analyzing at least some of the particles with an interrogation source.Filed by Life Technologies Corporation, published 2014-09-30 — a foundational claim tying acoustic focusing directly to coincidence-rate control.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20110000560A1 | Manipulation of Microfluidic Droplets | 433 |
| 2 | US20090029870A1 | Particle Analyzing Systems and Methods Using Acoustic Radiation Pressure | 242 |
| 3 | US20090178716A1 | System and Method for Acoustic Focusing Hardware and Implementations | 202 |
| 4 | US4818103A | Flow cytometry | 181 |
| 5 | US20090053686A1 | Particle Switching Systems and Methods Using Acoustic Radiation Pressure | 163 |
| 6 | US5641457A | Sterile flow cytometer and sorter with mechanical isolation between flow chamber and sterile enclosure | 163 |
| 7 | US20090045107A1 | Kits for Systems and Methods Using Acoustic Radiation Pressure | 136 |
| 8 | US20140147860A1 | Acoustic Cytometry Methods and Protocols | 132 |
| 9 | US8134705B2 | Particle imaging systems and methods using acoustic radiation pressure | 123 |
| 10 | US4673288A | Flow cytometry | 117 |
Ranked by citation count within the searched corpus. Older acoustic-focusing filings dominate this list partly because they have had longer to accumulate citations, not necessarily because they represent the current commercial standard.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three findings shape how a team should read this field: concentration, timing, and where the technical weight actually sits.
Five assignees hold most of the claim space
126 of the 168 records in scope belong to the five leading assignees, and the top ten combined reach 91.7%. That leaves a genuinely narrow tail of 39 other ranked companies each holding a handful of filings, which means a new entrant is negotiating around a small number of established portfolios rather than a fragmented field.
Filing has cooled sharply since its 2021 peak
Annual filings fell from a peak of 13 in 2021 to 3 in 2024, a decline the data supports directly. That drop-off predates the publication lag that affects 2025-2026, so it reflects an actual pullback in new filing activity rather than a reporting artefact.
Acoustic focusing carries the citation weight
The single most-cited record in the set addresses microfluidic droplet manipulation, and three of the next four most-cited documents describe acoustic radiation pressure focusing rather than classical hydrodynamic sheath flow. Any freedom-to-operate review of acoustic approaches should start with this cluster.
Mechanical fluidics claims are a minority but present
Pipeline transport (F17D) and valve/tap mechanisms (F16K) each cover under 9% of records, showing that most competitive activity in this dataset is being claimed as measurement method (G01N) rather than as plumbing hardware. That skews where a fluidics-hardware-specific filing would actually land relative to prior art.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to flow cytometer fluidics and optics, with the prior art for and against each one.
Who is filing, and where the gaps sit
The ranking covers 49 companies as returned by the data endpoint — not a top-50 or top-100 cut. Filing is heavily concentrated at the top, with the leader alone holding 64 records against a fifth-place total of 7 and a tenth-place total of 5.
One assignee dominates volume
The leading assignee's 64 records outnumber the combined total of every company ranked fifth or lower. That scale typically means a dense, overlapping claim set around core acoustic-focusing and coincidence-control methods that any new filer needs to map before drafting.
A steep drop after the top few
Filing volume falls off quickly outside the leading names: fifth place holds 7 records and tenth place holds 5, a fraction of the leader's 64. This is a field where a handful of firms set the terms and the rest file opportunistically around specific instrument features.
Recent-year activity has gone quiet across leaders
Momentum data shows most tracked assignees, including the top-ranked filers, at zero or flat filings in the latest year, consistent with the broader 2021-2024 pullback. This is more likely a lag-and-slowdown combination than a sign the technology has been abandoned.
| Assignee | Recent year | YoY |
|---|---|---|
| Becton, Dickinson and Company | 1 | 0% |
| Life Technologies Corporation | 0 | — |
| Kinetic River Corp | 0 | -100% |
| RATCOM | 0 | — |
| KADUCHAK GREGORY | 0 | — |
| WARD MICHAEL D | 0 | — |
| Bio-Rad Laboratories, Inc. | 0 | -100% |
| ABS Global, Inc. | 0 | — |
Where to take this analysis next
The dataset points to specific follow-up work rather than a single conclusion.
Map freedom-to-operate around acoustic focusing
Given how much of the citation weight sits with acoustic radiation pressure claims, any hardware program using acoustic core-stream control should run a dedicated clearance search against that cluster before committing to a design.
Explore acoustic-focusing prior art in Eureka →Track the leader's recent filing behaviour
With the top assignee holding 64 of 168 records but showing flat recent-year activity, watch whether that reflects portfolio consolidation or a genuine pause before drafting around it.
Set up assignee monitoring in Eureka →Test white-space claims in under-claimed branches
Clog detection, sheath consumption reduction and laser alignment correction show thinner coverage relative to the core cluster and merit a targeted novelty check before drafting.
Run a novelty check in Eureka →Common questions about this landscape
One assignee leads with 64 of the 168 records in this dataset, well ahead of the rest of the field. The top five assignees combined hold 75.0% of all records, and the top ten reach 91.7%, so the field is dominated by a small group rather than spread evenly. Below the top ten, filing volume drops off quickly across the remaining ranked companies.
Filing peaked at 13 records in 2021 and fell to 3 by 2024, a -77% decline over that span, which is a real pullback rather than noise. Figures for 2025 and 2026 look lower still, but that is expected because publication typically lags filing by around 18 months, so those years are not yet complete. The honest read is that filing cooled meaningfully through 2024, with the most recent years still an open question.
Hydrodynamic focusing uses sheath fluid flow to align particles into a single stream and shows up in this dataset through mechanical classes like valves (F16K) and pipeline transport (F17D). Acoustic focusing uses radiation pressure from sound waves to achieve the same alignment without relying on sheath fluid, and it is the basis for several of the highest-cited records in this corpus, including patents on acoustic radiation pressure particle analysis. The two approaches solve the same core-stream stability problem differently, and the acoustic route carries disproportionate citation weight in this dataset.
US8846408B2, assigned to Life Technologies Corporation, claims a method for optimizing particle throughput by determining an optimal particle concentration to hit a user-defined coincidence rate, acoustically focusing the particles, and adjusting flow rate to reach a user-defined transit time. It directly ties acoustic focusing to coincidence-rate control, which is a core operating parameter for any high-throughput cytometer. Anyone building acoustic-focusing instrumentation with coincidence-rate optimization should review this claim set closely.
Relative to the dense cluster around acoustic focusing and coincidence-rate control, areas such as real-time clog detection, sheath-fluid consumption reduction, and in-line laser alignment correction show comparatively thinner patent coverage in this dataset. That does not guarantee those areas are unpatented elsewhere, but within this scope they represent narrower prior-art clusters worth a targeted novelty search before drafting new claims.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.