Gas Sensor Sensor Fusion Patents: Who Leads, Where the Gaps Are 2026
- Filings have plateaued, not grown. 2025 hit a peak of 164 filings, but the 2022 midpoint of 106 sits below a flat-to-declining trend line rather than a steady climb — momentum is not accelerating into 2026.
- G01N dwarfs every adjacent class. 1,466 of 2,005 records sit in material analysis and testing (G01N), while AI-based computing (G06N, 194) and alarm/signalling (G08B, 87) trail far behind — fusion logic is still a secondary claim, not the primary one.
- China and the US lead filing offices by a wide margin. 594 records were filed in China and 511 in the United States, with Europe, India, South Korea and the WIPO PCT route each drawing well under half that volume.
Filing growth compares 2021 (90 records) with 2024 (105) — 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 2,005 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Gas sensor sensor fusion sits at the intersection of chemiresistive and gas-detection hardware with array-based and electronic-nose data fusion. This landscape tracks 2,005 patent families published between 2015 and 2026 that combine gas sensor claims with multi-sensor array or fusion logic. Publication lags filing by roughly eighteen months, so the most recent year in any trend understates real activity.
The dataset spans hardware-heavy filings in material analysis and testing alongside a smaller but distinct cluster of claims built around AI-based computing, digital data processing, and alarm signalling — evidence that fusion is increasingly claimed as a software layer on top of established sensor hardware rather than as a new sensing modality in itself.
Filing trend and technology composition
Two views of the same 2,005-family dataset: how filing volume has moved year on year, and how those filings split across IPC subclasses.
Filing trend, 2017-2026
Filings rose from 91 in 2017 to a peak of 164 in 2025, but the 2022 midpoint of 106 shows growth was uneven rather than compounding; 2026 is a partial year at 58 and will revise upward as later publications land.
IPC composition
G01N (material analysis & testing) accounts for 1,466 of 2,005 records — nearly three in four filings. G06N (AI-based computing, 194), G06F (digital data processing, 121) and G08B (alarm & signalling, 87) form a secondary tier built around processing and response logic rather than the sensing element itself.
Shares are the percentage of the 2,005 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Gas Sensor Sensor Fusion with Eureka
This page is one run against one query. Ask Eureka your own question about gas sensor sensor fusion and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a representative filing
Cooking appliance with integrated gas sensor array (RATIONAL AG)
A cooking appliance combining a cooking compartment with at least one gas sensor array — two or more discrete sensors, or a coherent sensor field with distinct segments — to monitor the cooking compartment, installation compartment and surrounding atmosphere. Detected signals are stored, evaluated and used to control appliance behaviour and cleaning cycles.Filed by RATIONAL AG, published 2008-10-30. Included here as a representative example of gas sensor arrays applied outside the industrial and automotive contexts most filings target.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20130223673A1 | Methods and arrangements for identifying objects | 623 |
| 2 | US7080545B2 | Apparatus and process for sensing fluoro species in semiconductor processing systems | 495 |
| 3 | US7296460B2 | Apparatus and process for sensing fluoro species in semiconductor processing systems | 480 |
| 4 | US7475588B2 | Apparatus and process for sensing fluoro species in semiconductor processing systems | 477 |
| 5 | US20140052555A1 | Methods and arrangements for identifying objects | 409 |
| 6 | US20150310601A1 | Methods and arrangements for identifying objects | 228 |
| 7 | US20080093226A1 | Ammonia nanosensors, and environmental control system | 191 |
| 8 | US7097973B1 | Method for monitoring molecular species within a medium | 191 |
| 9 | US9129277B2 | Methods and arrangements for identifying objects | 189 |
| 10 | US5675070A | Olfactory sensor identification system and method | 159 |
Citation counts favour older records that have had more time to accumulate citations within the searched corpus; treat them as a signal of influence, not current relevance. Three of the five most-cited records share the same underlying fluoro-species sensing disclosure across continuations.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Reading volume, composition and citation patterns together points to where claim space is dense and where it is still open.
Growth is plateauing, not compounding
The climb from 91 filings in 2017 to a 2025 peak of 164 looks strong until set against the 2022 midpoint of 106 — the trend is flat to declining rather than accelerating, and the partial 2026 count will only partly revise upward once late publications land.
Hardware claims dominate the fusion layer
Material analysis and testing (G01N) accounts for nearly three-quarters of all records, meaning the sensing hardware itself is still where most claim density sits — the fusion and inference logic layered on top, in G06N and G06F, remains comparatively lightly claimed.
Filing strategy is bifurcated across two offices
China and the United States together account for the large majority of receiving-office volume, with Europe, India, South Korea and PCT filings each running well behind — a filer targeting global coverage without a China or US-anchored strategy is missing most of the corpus.
Influence traces back to a small set of foundational filings
The five most-cited records split between an object-identification lineage and a fluoro-species sensing lineage filed as continuations — citation weight in this corpus concentrates in older, foundational disclosures rather than recent fusion-specific claims.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to gas sensor sensor fusion, with the prior art for and against each one.
Assignee landscape and where the gate sits
Co-assignee activity is thin — only 10 pairs recorded across the entire corpus — and recent-year momentum has gone quiet across the assignees with the deepest historical filing, suggesting the field is between waves rather than mid-surge.
University of Florida Research Foundation anchors the densest collaboration
The strongest co-assignee pairs in the dataset link University of Florida Research Foundation with individual inventors across two separate pairings at four shared filings each — the deepest sustained collaboration pattern in a corpus where most assignees file alone.
Established filers have gone quiet in the most recent year
Several of the assignees with the deepest historical presence — including Florida Research Foundation, Fisher Controls International, Infineon Technologies, Lunatech, Aromascan and Digimarc — show zero filings in the latest tracked year, though publication lag means this understates true 2026 activity.
Filing is overwhelmingly solo, not collaborative
With only ten recorded co-assignee pairs across the entire 2,005-family corpus, the field is dominated by single-assignee filings — collaborative R&D structures visible in the patent record are the exception rather than the norm here.
| Assignee | Recent year | YoY |
|---|---|---|
| University of Florida Research Foundation, Inc. | 0 | — |
| Fisher Controls International LLC | 0 | — |
| Infineon Technologies AG | 0 | — |
| LUNATECH LLC | 0 | — |
| AROMASCAN | 0 | — |
| Digimarc Corporation | 0 | — |
| University of Electronic Science and Technology of China | 0 | -100% |
| Weina Ganzhi (Hefei) Technology Co., Ltd. | 0 | — |
Where to take this analysis
The trend and composition data point to specific next steps depending on whether the goal is freedom-to-operate, portfolio strategy, or identifying acquisition targets.
Check freedom-to-operate against the dense G01N cluster
With nearly three-quarters of filings sitting in material analysis and testing, any new hardware design needs claim-by-claim review against that cluster before committing to a sensor architecture.
Explore claim charts in EurekaTrack momentum shifts across quiet historical filers
Several established assignees show zero recent-year filings — worth monitoring whether that reflects a strategic pause, a shift to trade secret protection, or a real exit from the space.
Set up assignee alerts in EurekaEvaluate the fusion-logic layer for open claim space
AI-based computing and digital data processing subclasses trail G01N by a wide margin, suggesting fusion algorithms themselves remain comparatively under-claimed relative to the sensing hardware they run on.
Run a white space search in EurekaCommon questions about gas sensor sensor fusion patents
In this dataset, it is a patent family whose claims combine gas or chemiresistive sensing with array-based or multi-sensor data fusion — meaning the invention relies on combining signals from two or more sensors rather than a single sensing element. This includes electronic-nose style arrays, multi-sensor calibration methods, and fusion algorithms applied to gas-sensing outputs. Pure single-sensor gas detection patents without a fusion or array element fall outside this scope.
Filing is heavily skewed toward single-assignee activity, with only ten recorded co-assignee pairs across the full 2,005-family corpus. The assignees with the deepest historical presence, including several named in the co-assignee data, show no filings in the most recent tracked year, though publication lag of roughly eighteen months means 2026 activity is understated. This makes it difficult to name a single current leader without checking underlying filing dates directly.
Filing volume is flat to declining rather than growing steadily: it rose from 91 filings in 2017 to a peak of 164 in 2025, but the 2022 midpoint of 106 sits below what a compounding growth curve would predict. The partial 2026 count of 58 will revise upward as later publications are indexed, but the underlying multi-year pattern does not show sustained acceleration.
The clearest gap sits between the dense G01N hardware cluster of 1,466 records and the much thinner AI-computing and digital-processing classes of 194 and 121 records respectively — fusion algorithms, drift compensation, and cross-sensitivity calibration methods are comparatively under-claimed relative to the sensor hardware they operate on. Battery-integrated gas sensing, overlapping with the H01M class at 59 records, is another thinly claimed adjacency worth investigating.
China and the United States are the two dominant receiving offices, with 594 and 511 records respectively — together accounting for the large majority of filing volume in this corpus. Europe, India, South Korea and the WIPO PCT route each draw meaningfully less activity, so a filing strategy focused only on Europe or Korea would miss most of the competitive landscape documented here.
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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.