Sensor Calibration Patents: Who Leads, Where the Gaps Are 2026
- 38.1% concentration. The five leading assignees together hold 209 of 549 records in scope — a real concentration at the top, but well short of a monopoly on the field.
- Filing has cooled, not collapsed. From a 2018 peak of 77 records, filings fell to 22 in 2021 and 19 in 2024 — a 14% decline over that span, not a retreat from the space.
- Diagnosis and materials testing dominate the claims. A61B and G01N together touch the majority of records, leaving control systems (G05B) and AI-based approaches (G06N) comparatively open.
Filing growth compares 2021 (22 records) with 2024 (19) — 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 549 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Sensor calibration and traceability patents cover how a measurement device is proven accurate, kept accurate over time, and tied back to a reference standard that a regulator or customer will accept. That spans calibration certificates and accreditation scope, drift history and calibration interval management, and the uncertainty budgets that let a reading be defended in an audit. The search underlying this page combines those traceability terms with the sensor and instrument context in which they actually get claimed.
The 549 records in scope run from 2015 through the current filing year, with publication understating the most recent 12–18 months as pending applications work through the pipeline. The picture below is best read as a map of where claim space is dense and where it is thin, not as a verdict on which approach is technically superior.
Filing trends and technology composition
Two views of the same 549 records: how filing activity has moved year over year, and which IPC subclasses carry the claims.
Filing trend: rise, peak, plateau
Filings rose from 27 in 2017 to a peak of 77 in 2018, then settled into a lower band — 22 in 2021 and 19 in 2024, a 14% decline over that three-year window. Treat 2025 and 2026 figures as undercounted rather than as evidence of a further drop, since publication lags filing by roughly 18 months.
Where the claims sit
A61B (diagnosis and surgery) accounts for 36.4% of the 549 records and G01N (material analysis and testing) for 23.5% — together the two largest single blocks. G01D, G01L, G16H, G06N, G01K and G05B each cover a smaller, more specific slice, from measurement recording down to control-system integration; a record can sit in more than one class, so these shares add to more than 100%.
Shares are the percentage of the 549 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Sensor Calibration and Traceability with Eureka
This page is one run against one query. Ask Eureka your own question about sensor calibration and traceability and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited prior art
Systems and Methods for Condition-Based Power Plant Sensor Calibration
The filing describes a computer processor and memory arrangement that receives data from power plant sensors, reconciles detected errors in that data, calibrates the sensors based on the errors found, and generates a performance model from the reconciled data — a condition-based rather than fixed-interval approach to keeping industrial sensors within tolerance.Filed by GE Infrastructure Technology, published 2013-03-28.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US8509867B2 | Non-invasive measurement of analytes | 829 |
| 2 | US20040106163A1 | Non-invasive measurement of analytes | 577 |
| 3 | US20140120564A1 | Non-invasive measurement of analytes | 576 |
| 4 | US20110205535A1 | Spectroscopic sensors | 193 |
| 5 | US9095291B2 | Spectroscopic sensors | 125 |
| 6 | US20070020181A1 | Non-invasive measurement of analytes | 122 |
| 7 | US5189624A | Intelligent machining workstation operating logic | 120 |
| 8 | US20130102018A1 | Device and Method for Monitoring and Quantifying Analytes | 109 |
| 9 | US20130197332A1 | Tissue implantable sensor with hermetically sealed housing | 87 |
| 10 | WO2010053617A2 | Spectroscopic sensors | 82 |
Citation counts reward older filings simply because they have had longer to accumulate them — read this as a map of foundational prior art, not a ranking of current relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the numbers mean for a filing decision
Three figures from this dataset carry direct implications for where a new application is likely to face crowded prior art versus open claim space.
Leadership is real but not exclusive
The five leading assignees hold 209 of the 549 records in scope, and the top ten extend that to 274 records — just under half the field. That leaves a substantial long tail of single- and few-filing entrants, which is where a differentiated claim is more likely to clear examination cleanly.
A plateau, not an exit
Filings dropped from 22 in 2021 to 19 in 2024 after peaking at 77 in 2018. That is a cooling from an early surge rather than a signal that the field is closing — sustained double-digit annual filings through 2024 indicate active prosecution, and 2025-2026 counts will rise as publications catch up.
Diagnostic sensor claims are the densest single block
A61B alone touches over a third of the 549 records, with G01N close behind at 23.5%. Anyone filing a diagnosis-adjacent calibration claim is filing into the most contested part of this landscape and should expect close prior-art scrutiny there.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to sensor calibration and traceability, with the prior art for and against each one.
Who is filing, and where the field is still open
The ranked leaders span medical-device makers, testing-standards bodies and instrumentation specialists — no single sector owns this space outright.
The clear leader by volume
The top-ranked assignee holds 120 records, well ahead of fifth place at 16 and tenth place at 10 — a steep drop-off that marks this as a leader-plus-long-tail field rather than an evenly spread one.
Recent-year activity has gone quiet at the top
Several of the most active historical filers, including the leader, show zero filings in the latest tracked year. That is consistent with publication lag rather than withdrawal, but it also means the current top-10 ranking reflects filings made mostly before 2024.
Collaboration is limited and concentrated
Only ten co-assignee pairs appear across the dataset, and the strongest pair — a diagnostics company and its glucose-monitoring affiliate — files together far more often than any other combination. Most records in this landscape are filed by a single assignee.
| Assignee | Recent year | YoY |
|---|---|---|
| Medtronic MiniMed Inc | 0 | -100% |
| SMARTWASH SOLUTIONS LLC | 0 | — |
| Commonwealth Scientific and Industrial Research Organisation (CSIRO) | 0 | — |
| THE MODAL SHOP | 0 | — |
| University of Massachusetts | 0 | — |
| Variable Inc | 0 | — |
| Glysens Inc | 0 | — |
| Hach | 0 | — |
Where to take this analysis
This landscape is a starting point for a filing or freedom-to-operate decision, not a substitute for one.
Run a freedom-to-operate check on a specific claim
The IPC composition and most-cited records here point to dense areas like A61B and G01N, but a real FTO check needs claim-level comparison against the specific prior art blocking your invention.
Explore in EurekaTrack the leading assignees' recent activity
Several top filers show zero activity in the latest tracked year, which could mean a strategic pause or simply publication lag — worth monitoring as new records surface.
Set up monitoring in EurekaMap the under-claimed branches before you file
G06N, G05B and G01K carry a smaller share of records than A61B or G01N. That is where a well-drafted first claim has the best odds of standing on open ground.
Search white space in EurekaCommon questions about sensor calibration patents
It is moderately concentrated: the five leading assignees hold 38.1% of the 549 records in scope, and the top ten hold 49.9%. That leaves roughly half the field spread across a long tail of assignees with far fewer filings each. A newcomer is not up against one dominant player everywhere — the concentration is strongest in specific sub-areas like diagnostic sensor calibration, and much thinner elsewhere.
Filings peaked in 2018 at 77 records, then settled to 22 in 2021 and 19 in 2024, a 14% decline over that three-year window. That is a plateau after an early surge, not a field in retreat — sustained filings in the high teens through 2024 show continued activity. The 2025 and 2026 counts in the raw data will look lower still, but that reflects publication lag of roughly 18 months rather than a real drop-off.
A61B, diagnosis and surgery, covers 36.4% of the 549 records and is the single largest class, followed by G01N, material analysis and testing, at 23.5%. Measuring and recording (G01D), pressure and force measurement (G01L), and healthcare informatics (G16H) each cover smaller but meaningful shares. Because a single record can carry multiple IPC classes, these percentages add up to more than 100% and should not be treated as mutually exclusive categories.
This GE Infrastructure Technology filing claims a condition-based calibration architecture: a processor and memory that ingest sensor data, reconcile detected errors in that data, calibrate sensors from those errors, and generate a performance model from the reconciled output. It is specific to power plant sensor systems and to a condition-triggered rather than fixed-interval calibration schedule. Anyone building a similar error-reconciliation-to-recalibration pipeline for industrial sensors should review its claim scope closely, though systems built around fixed calibration intervals or different trigger logic sit outside its core claims.
The thinnest classes by record share are G01K (temperature measurement) and G05B (control and regulating systems), each at 4.0% of the 549 records, alongside G06N (AI-based computing) at 5.5%. These are smaller, more specific niches rather than untouched ground, so a freedom-to-operate check is still warranted before filing. Combining calibration traceability with AI-driven drift prediction or closed-loop control integration looks less crowded than the diagnostic-sensor core of the field.
Research Sensor Calibration and Traceability in depth with Eureka
Go past this page: query the whole sensor calibration and traceability corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.