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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/conductor-temperature-sensing-for-line-rating-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Dynamic Line RatingConductor Temperature Sensing Patents: Mapping Line Rating Innovation
- Concentrated at the top. the five most active assignees hold 71 of 77 records in scope (92.2%), leaving a thin tail below tenth place.
- Filing is accelerating, not cooling. filings rose from 1 in 2021 to 3 in 2024, a +200% span, with a peak of 7 records in 2022.
- Sensing overlaps grid protection. H02J power-supply and grid-systems claims appear in 68.8% of records, well ahead of the 54.5% carrying temperature-measurement (G01K) classes.
77
Published Records
92%
Top-5 Share of All Records
+200%
Filing Growth 2021→2024
EP
Leading Jurisdiction
Filing growth compares 2021 (1 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 77 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··6 min readSourced from Patsnap Eureka
Overview
What this landscape covers
This review covers 77 published records filed or published between 2015 and mid-2026 that combine conductor temperature sensing, dynamic line rating and forecast or redundancy elements — the search pairs core sensing terms with operational qualifiers such as weather station input, capacity gain and measurement redundancy so that generic grid-monitoring filings without a line-rating angle fall outside scope.
Because publication trails filing by roughly eighteen months, the 2025 and 2026 counts in the trend chart are still filling in and should not be read as a slowdown. The clearest signal in the data is where claim density sits: sensing hardware and grid-systems integration dominate, while measurement transmission and protective-circuit classes each cover under a third of records.
Filing activity and technology composition
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Conductor Temperature Sensing for Line Rating covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The data
Filing trends and technology composition
Two views of the same 77 records: how filing activity has moved year over year, and how those records classify across IPC subclasses.
Filing trend, 2017–2026
Annual filings rose unevenly from 2 records in 2017 to a peak of 7 in 2022, then eased before the 2021→2024 span shows growth of +200% (1 to 3 records). The final two years in the window are still incomplete due to publication lag.
IPC subclass composition
H02J (power supply and grid systems) and G01R (electric and magnetic measurement) lead at 68.8% and 59.7% of the 77 records respectively, with G01K temperature measurement close behind at 54.5%. Because records carry multiple IPC codes, these shares sum past 100% and should each be read against the full 77-record base, not against each other.
Shares are the percentage of the 77 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Conductor Temperature Sensing for Line Rating covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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Most-cited prior art in this space
Representative filing
WO2022097178A1 — Surveillance and weather stations on overhead power lines
LAKI POWER EHF.
The application describes a clamp-mounted apparatus for phase wires that harvests power by magnetic induction from the line current and uses it to run onboard sensors plus active cooling or heating to keep electronics within operating range in extreme outdoor temperatures. It positions itself as a combined meteorological and monitoring station rather than a single-purpose temperature sensor.Filed by Laki Power ehf., published 2022-05-12.
Highest-citation records
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20080077336A1 | Power line universal monitor | 764 |
| 2 | US4886980A | Transmission line sensor apparatus operable with near zero current line conditions | 339 |
| 3 | US4746241A | Hinge clamp for securing a sensor module on a power transmission line | 301 |
| 4 | US8386198B2 | Real-time power line rating | 242 |
| 5 | US4689752A | System and apparatus for monitoring and control of a bulk electric power delivery system | 219 |
| 6 | US4268818A | Real-time parameter sensor-transmitter | 143 |
| 7 | US4420752A | Real-time parameter sensor-transmitter | 120 |
| 8 | US4635055A | Apparatus for measuring the temperature and other parameters of an electic power conductor | 116 |
| 9 | US4796027A | Apparatus for data transmission from multiple sources on a single channel | 90 |
| 10 | US4794328A | Tool for mounting a sensor module on a live power transmission line | 81 |
Citation counts accumulate over time and favour older filings; treat them as a signal of influence on later filers rather than of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Conductor Temperature Sensing for Line Rating covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers say
Three findings that shape how a freedom-to-operate or whitespace review should be scoped in this field.
Concentration
92.2%
of 77 records held by top 5 assignees
A small group holds nearly all the ground
The top five assignees combined account for 71 of the 77 records in scope, a 92.2% share, while the ranking runs to only 13 companies before it thins out entirely. This is not a fragmented emerging field — it is one where a handful of filers set the terms of the claim space.
Ranked assignee data, 13 companies
Growth
+200%
filings, 2021 to 2024
Momentum is building, not fading
Filings moved from 1 record in 2021 to 3 in 2024, a +200% rise over that span, with the field's overall peak of 7 records reached in 2022. Read the tail end of the trend cautiously: 2025 and 2026 will fill in further as publication catches up with filing.
Filing trend, 2017-2026
Technology mix
68.8%
of records carry H02J grid-systems classes
Sensing is claimed as a grid-systems problem
H02J power-supply and grid-systems classes appear in 68.8% of the 77 records, ahead of G01R measurement at 59.7% and G01K temperature measurement at 54.5%. Filers are more often protecting how sensing data feeds grid operation than protecting the sensor element itself.
IPC composition, 8 subclasses tracked
Eureka AI Agent
Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to conductor temperature sensing for line rating, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Conductor Temperature Sensing for Line Rating covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
Who is filing, and where the gaps sit
The ranked leaders span utilities, sensor specialists and equipment makers; below the top tier, filing activity drops off sharply.
Leader
28 records
top-ranked assignee
One filer sets the pace
The leading assignee holds 28 of the 77 records in scope, well clear of fifth place at 7. That gap suggests an early and sustained filing programme rather than a recent push.
Assignee ranking, 13 companies
Mid-tier
7 records
fifth-place assignee
A workable second tier, then a steep drop
Fifth place holds 7 records, but tenth place falls to just 1 — the ranking's long tail is thin. Co-assignment activity is also limited, with only 3 co-assignee pairs identified across the dataset.
Co-assignee pairs: 3
Momentum
0 latest year
across tracked leading assignees
Recent-year activity has gone quiet among named leaders
None of the leading assignees tracked for recent-year momentum show filings in the latest year, consistent with publication lag rather than an actual pullback. Newer or smaller filers may be filling that gap ahead of the data catching up.
Recent-year momentum, 6 assignees tracked
Recent-year filing momentum
| Assignee | Recent year | YoY |
|---|---|---|
| Niagara Mohawk Power Corp | 0 | — |
| Ampacimon | 0 | — |
| Infravision Holdings Pty Ltd | 0 | — |
| Southwire Co LLC | 0 | — |
| Underground Systems Inc | 0 | — |
| LANCASTER MARK | 0 | — |
| University of Liège | 0 | — |
| DAVIS MURRAY W | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Conductor Temperature Sensing for Line Rating covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's next
Where to take this analysis
The landscape points to where claim space is dense and where it is still open — the next step is testing a specific claim or design against it.
Check freedom-to-operate against the leader's portfolio
With one assignee holding 28 of 77 records, any new filing in core sensing or clamp-mounted hardware should be checked against that portfolio first.
Run a freedom-to-operate check in EurekaDraft around the under-claimed branches
Forecast-horizon calibration and measurement-redundancy arbitration show lighter filing density than core sensing hardware — a first claim there has more room to move.
Draft claims with EurekaTrack the incomplete recent years
2025 and 2026 filings are still publishing; revisit the trend once the lag closes to see whether the 2021-2024 growth rate continued.
Set a monitoring alert in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Conductor Temperature Sensing for Line Rating covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions about this landscape
One assignee leads with 28 of the 77 records in scope, well ahead of the next four ranked companies combined. The top five assignees together account for 71 records, or 92.2% of all records, so the field is concentrated rather than fragmented. Below the top ten, filing activity drops sharply to a single record at tenth place, meaning most competitive attention should focus on the leading group rather than a long tail of small filers.
Filings grew from 1 record in 2021 to 3 in 2024, a documented +200% increase over that span, with the field's peak year so far at 7 records in 2022. The 2025 and 2026 figures look lower, but that reflects an 18-month publication lag rather than an actual decline. Any assessment of current momentum should treat 2024 as the most recent complete year.
H02J, covering power supply and grid systems, appears in 68.8% of the 77 records, making it the most heavily claimed subclass. G01R electric and magnetic measurement follows at 59.7%, and G01K temperature measurement at 54.5%. Because a single record can carry several IPC classes, these percentages overlap and add to more than 100%, so they should be read as separate claim-density signals rather than as a breakdown of the whole field.
WO2022097178A1, filed by Laki Power ehf. and published 2022-05-12, describes a clamp-mounted surveillance and weather-station apparatus for overhead phase wires that harvests its own power by magnetic induction from line current. The harvested power runs onboard sensors plus active cooling or heating to keep electronics within safe operating range in extreme outdoor temperatures. Anyone designing a self-powered, line-mounted sensing unit for similar environments should review its claims closely before finalising a power-harvesting or thermal-management approach.
The core sensing hardware and grid-systems integration classes are heavily claimed, but forecast-horizon calibration, measurement-redundancy fault arbitration, and operator-acceptance interface design show comparatively lower filing density in this dataset. These are not empty categories, but they sit below the concentration seen in H02J and G01R claims. A first filing in one of these branches is more likely to find open claim space than one in core temperature-sensing hardware, where the leading assignee already holds a large share of the ground.
Answers are grounded in the same dataset. Derived from a Patsnap search on Conductor Temperature Sensing for Line Rating covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.