Raman Process Monitoring Data Fusion Patents: Leaders & Trends 2026
- Filing peaked in 2019 at 17 records and fell from 16 in 2021 to 4 in 2024, a -75% swing over that span — the field's early land-grab phase looks largely over.
- The top 5 assignees hold 61% of all 100 records and the top 10 hold 82%, so most of the claim space sits with a small group rather than a long diffuse tail.
- G01J optics and G06N AI-model classes overlap with core G01N filings in 26% and 16% of records respectively, showing data-fusion claims are increasingly bundled with sensing hardware rather than filed alone.
Filing growth compares 2021 (16 records) with 2024 (4) — 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 100 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape tracks patent activity where Raman spectroscopy intersects with data-fusion concerns — sensor alignment, time synchronisation, latent-variable modelling, feature weighting, state estimation and uncertainty modelling — inside the material-analysis classes G01N21/65, C12Q3/00 and G01N21/359. The scope spans 100 published records filed between 2015 and mid-2026, with the most recent year necessarily incomplete because publication lags filing by roughly eighteen months.
Records here sit at the boundary of optical hardware and computational inference: a Raman probe or spectrometer generates a signal, and the claims of interest describe how that signal is time-aligned, weighted or fused with other sensor streams before a decision is made. That boundary shows up directly in the technology composition, where optics and AI-model classes both co-occur heavily with the core analytical class.
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Filing trend and technology composition
Two views of the same 100 records: how filing volume moved year over year, and which IPC subclasses the claims actually sit in.
A sharp rise, then a pullback
Filings were at zero in 2017, climbed to a peak of 17 in 2019, then declined; the last complete year, 2024, sits at 4, down 75% from 16 in 2021. Treat 2025 and 2026 figures as undercounts still filling in rather than evidence of a further drop.
Where the claims cluster
Every record carries G01N by definition of scope. Beyond that, 26% of records also carry G01J (radiation/light measurement), 16% carry G06N (AI-model computing), and 11% carry A61B (diagnosis and surgery) — the clearest sign that Raman data-fusion claims are being filed alongside optical hardware and inference-model claims rather than as standalone signal-processing patents.
Shares are the percentage of the 100 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Raman Process Monitoring Data Fusion with Eureka
This page is one run against one query. Ask Eureka your own question about raman process monitoring data fusion and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this set
Raman Spectroscopy Method and System (US20230341330A1)
Methods and systems for obtaining biochemical and/or structural information relating to tissues using Raman spectroscopy. Polarised light is directed to tissue using a probe; the resulting Raman scattering is split into two polarised components, imaged simultaneously by a spectrometer to produce two Raman spectra, then processed by a computer program to derive biochemical and/or structural information.Filed by King's College London, published 2023-10-26.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20040024298A1 | Spectroscopic unwanted signal filters for discrimination of vulnerable plaque and method therefor | 82 |
| 2 | US20160091429A1 | System and Method for Stimulated Raman Spectroscopy | 23 |
| 3 | US7689268B2 | Spectroscopic unwanted signal filters for discrimination of vulnerable plaque and method therefor | 22 |
| 4 | WO2022003359A1 | Methods for analysing viruses using raman spectroscopy | 8 |
| 5 | WO2020136376A1 | Methods for determining viral titre using raman spectroscopy | 7 |
| 6 | CN109991206A | 一种基于偏最小二乘法对醇类汽油总醇含量测定的方法 | 7 |
| 7 | US20230341330A1 | Raman Spectroscopy Method and System | 5 |
| 8 | WO2020130947A1 | Method and system for predicting quantitative measures of oil adulteration of an edible oil sample | 5 |
| 9 | US9638638B2 | System and method for stimulated raman spectroscopy | 4 |
| 10 | US20190041324A1 | Method, computer programme and system for analysing a sample comprising identifying or sorting cells accordin… | 3 |
Citation counts reflect influence within the searched corpus and skew toward older filings; they are not a measure of current commercial importance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once filing volume, assignee concentration and class overlap are read together.
Claim space sits with a small group
The five leading assignees account for 61.0% of all 100 records in scope, and the ranked ten reach 82.0%. With 45 companies in the full ranking, that leaves a long tail of single- or few-filing entrants competing for the remaining share.
The peak has passed, but the read is noisy at the edges
Filing rose from zero in 2017 to a peak of 17 in 2019, then fell to 4 by 2024, a -75% move over the 2021-2024 window. Because publication lags filing by around eighteen months, 2025-2026 counts are not yet reliable evidence of further decline.
Fusion claims travel with hardware and models, not alone
A quarter of records also sit in G01J (light measurement) and 16% in G06N (AI-model computing), against a baseline where G01N appears in every record. Filers are bundling the fusion logic into hardware or model claims rather than protecting it as a discrete method.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to raman process monitoring data fusion, with the prior art for and against each one.
Who is filing, and where the gate sits
The leader holds 27 records; by fifth place that falls to 7, and by tenth place to 2 — a steep drop-off that marks where the small group of concentrated filers gives way to the long tail.
One filer well ahead of the field
The leading assignee's count of 27 records is nearly four times the fifth-place holder's 7, marking a clear gap between the single largest filer and everyone chasing behind.
A compact group holds the middle ground
From second through fifth place, counts step down to 7 records, still well above the tenth-place figure of 2 — this is the tier worth watching for freedom-to-operate checks.
Most filers appear once or twice
Past tenth place, where counts sit at 2, the ranking thins into assignees with a handful of records each — typical of a field still being explored by academic and specialist filers rather than locked down by incumbents.
| Assignee | Recent year | YoY |
|---|---|---|
| Cell Therapy Catapult | 0 | — |
| Wilmar International | 0 | — |
| AstraZeneca AB | 0 | — |
| InfraReDx Inc | 0 | — |
| Korea Institute of Materials Science | 0 | — |
| Aalto University Foundation | 0 | — |
| Sierra Medical Ltd | 0 | — |
| Thermo Scientific Portable Analytical Instruments Inc | 0 | — |
Where to take this next
The landscape points to specific next checks rather than a single verdict.
Check freedom-to-operate around the leader's claims
With one assignee holding 27 of 100 records, any new filing in the core optical-fusion space should be checked against that portfolio first, before the mid-tier group holding around 7 records each.
Explore assignee claims in EurekaWatch the 2024-2025 filings as they publish
Because publication lags filing by roughly eighteen months, the true 2025 filing count is still forming; revisit the trend once those records clear the publication pipeline.
Track filing trends in EurekaProbe the under-claimed sub-areas directly
Branches like multi-probe time synchronisation and cross-sensor feature weighting show thinner filing density than the core optical claims and may offer room for a defensible first claim.
Search white space in EurekaCommon questions about this landscape
One assignee leads the ranked list with 27 of the 100 records in scope, well ahead of the fifth-place holder at 7. The top 5 assignees combined hold 61.0% of all records, and the top 10 hold 82.0%, so the field is concentrated at the top even though 45 companies appear across the full ranking. That leaves a long tail of assignees with only one or two filings each.
Filing rose from zero in 2017 to a peak of 17 records in 2019, then declined to 4 by 2024 — a -75% change over the 2021-2024 window. Because patent publication typically lags filing by about eighteen months, the 2025 and 2026 figures are still incomplete and should not be read as continued decline. The safest statement is that the early growth phase has passed and 2024 marks the last reliable data point.
Every record in scope falls under G01N (material analysis and testing) by definition of the search. Beyond that, 26% also carry G01J (radiation and light measurement) and 16% carry G06N (AI-model computing), with smaller overlaps in A61B (diagnosis and surgery, 11%) and G06F (digital data processing, 9%). This shows fusion claims are typically bundled with either the optical hardware or the computational model rather than filed as a standalone signal-processing method.
The technology composition shows thinner filing density in branches like multi-probe time synchronisation, latent-variable uncertainty bounding and cross-sensor feature weighting for assay applications compared to the dense core optical-detection claims. These areas sit adjacent to well-filed classes like G01J and G06N but are not yet locked down by the leading assignees. A first claim there would need to tie a specific fusion method to a named measurement context rather than claim the general concept.
The United States leads with 25 filings, followed by WIPO's PCT route at 14 and the European Patent Office at 11. India, Australia and Israel each account for 6-8 filings, indicating that protection is sought broadly across major markets rather than concentrated in a single jurisdiction. This spread is typical of a technology that touches both medical diagnostics and industrial process monitoring.
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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.