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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/sodium-ion-batteries-layered-oxide-cathode-patent-landscape-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Sodium-Ion BatteriesSodium-Ion Layered Oxide Cathode Patents: Who Holds the Claim Space
283
Published Records
28%
Top-5 Share of All Records
+139%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (18 records) with 2024 (43) — 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 283 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 landscape tracks patent filings and publications naming layered oxide cathode materials within sodium-ion battery chemistry, restricted to the core battery-cell classification H01M10/054. The scope spans 2015 through the 2026 data cut-off, covering 283 published records that form the basis for every figure on this page. Because publication trails filing by roughly 18 months, the most recent filing years understate actual activity and should be read as a floor, not a ceiling.
Layered oxide cathodes are one of three competing sodium-ion cathode families, alongside Prussian-blue analogues and polyanionic materials, and patent activity here reflects a chemistry now moving from academic characterisation toward manufacturable formulations, coatings and precursor routes.
Filing activity and technology composition, 2015–2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Sodium-Ion Batteries: Layered Oxide Cathode Patent Landscape 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
The filing curve and IPC composition below are drawn directly from the 283 records in scope, with no smoothing or extrapolation beyond what the dataset returns.
A three-year filing surge, still under-counted at the edges
Annual filings rose from 12 in 2017 to a peak of 43 in 2024, including a documented 139% increase between 2021 (18) and 2024 (43). 2025 and 2026 figures are still filling in as publication catches up with filing, so the apparent tail-off in the last two years is an artefact of the 18-month lag, not a real slowdown.
Concentration outside the core battery class
Every record carries H01M, the batteries and fuel-cells class that defines the search. Beyond that, C01G (compounds of other metals) appears in 23.0% of the 283 records, C01B (non-metallic elements and inorganic compounds) in 4.6%, and B82Y (nanotechnology applications) in 3.9%, showing where cathode-material claims most often reach into adjacent chemistry classes.
Shares are the percentage of the 283 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 Sodium-Ion Batteries: Layered Oxide Cathode Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
Go deeper on Sodium-Ion Batteries: Layered Oxide Cathode Patent Landscape with Eureka
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A representative recent filing
Representative filing
Layered Oxide Cathode Material and a Preparation Method Thereof, a Cathode Sheet, and a Sodium Ion Battery
HUBEI WANRUN NEW ENERGY TECHNOLOGY CO., LTD.
The disclosure describes a layered oxide cathode material combining an O3-phase nickel-manganese-based oxide layered particle with a P2-phase metal oxide coating, further coated with a carbon and/or inorganic metal oxide layer, filed for sodium-ion battery applications.Filed by Hubei Wanrun New Energy Technology Co., Ltd., published 2026-01-01 — one of the most recent filings in scope.
Most-cited records in this landscape
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20160301096A1 | Zinc Ion-Exchanging Energy Storage Device | 170 |
| 2 | US20170104204A1 | Continuous process for producing electrodes and alkali metal batteries having ultra-high energy densities | 135 |
| 3 | WO2012024499A1 | Stationary, fluid redox electrode | 127 |
| 4 | US20130302697A1 | Rechargeable magnesium-ion cell having a high-capacity cathode | 115 |
| 5 | US20150249261A1 | Ultra-fast rechargeable metal-ion battery | 89 |
| 6 | US20180090758A1 | High performance layered cathode materials for high voltage sodium-ion batteries | 65 |
| 7 | US20190165374A1 | Anode Particulates or Cathode Particulates and Alkali Metal Batteries | 51 |
| 8 | US20160218363A1 | Lithium and sodium containing layered oxide material, cathodes and sodium ion electrochemical cells | 50 |
| 9 | US20190173079A1 | Method of Producing Participate Electrode Materials for Alkali Metal Batteries | 46 |
| 10 | CN106673075A | 一种改性O3型钠离子电池层状正极材料及其制备方法和应用 | 36 |
Citation counts reward older filings that have had more time to accumulate citations within this corpus; treat them as a signal of influence on the field's prior art, not as a ranking of current commercial relevance.
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.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Sodium-Ion Batteries: Layered Oxide Cathode Patent Landscape 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 mean for a filing decision
Three patterns stand out once the ranking, the trend and the classification data are read together.
Concentration
28.3%
of 283 records held by the top five
Leadership is real but not locked in
The leading assignee holds 31 records and the top five combined hold 80, or 28.3% of the 283 records in scope. That leaves a long tail of single- and few-filing entrants with room to establish position, particularly outside the strongest assignee's core claim territory.
Top 10 combined reach 42.8% of records.
Momentum
+139%
filing growth, 2021 to 2024
Filing activity accelerated sharply into 2024
Annual filings rose from 18 in 2021 to 43 in 2024, the peak year on record. Because publication lags filing by around 18 months, 2025 and 2026 counts are still incomplete and should not be read as a plateau.
Peak year so far: 2024 at 43 filings.
Adjacent chemistry
23.0%
of records also carry C01G
Metal-oxide compound claims are the densest adjacent territory
Beyond the core H01M battery classification carried by every record, C01G (compounds of other metals other than aluminium) appears in 23.0% of the 283 records, far ahead of any other adjacent class. This marks it as the most contested secondary claim space around layered oxide cathode chemistry.
Next largest adjacent class, C01B, appears in 4.6% of records.
Filing geography
100
records filed at the US receiving office
The US and PCT routes dominate filing strategy
The United States receives the largest single share of filings at 100 records, ahead of WIPO/PCT filings at 41, Europe at 37, China at 36, India at 27 and South Korea at 10. A filing strategy built only around one jurisdiction misses meaningful activity in at least four others.
Figures count receiving-office filings, not unique families.
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Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to sodium-ion batteries: layered oxide cathode patent landscape, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Sodium-Ion Batteries: Layered Oxide Cathode Patent Landscape 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 figures above describe where the field stands; deciding where to file, partner or design around requires going deeper into specific claims and assignees.
Map the white space by claim element
Layered oxide cathode filings cluster around coating layers, phase composites and precursor routes. Identifying which specific claim elements remain lightly filed takes a claims-level read, not just a class-level count.
Explore claim-level analysisTrack the fastest-moving assignees
A 139% rise in filings between 2021 and 2024 means the competitive picture from two years ago is already dated. Watching filing velocity by assignee, not just cumulative totals, surfaces who is accelerating now.
Monitor assignee activityCheck freedom to operate before committing R&D spend
With 42.8% of records held by the ten leading assignees, a new entrant's cathode formulation may sit closer to existing claims than a keyword search suggests.
Run a freedom-to-operate checkSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Sodium-Ion Batteries: Layered Oxide Cathode Patent Landscape 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
This landscape identifies 283 published records within the search scope, restricted to filings classified under H01M10/054 that reference layered oxide cathode chemistry. This counts published patent documents rather than granted patents, and includes applications still pending examination. The figure covers 2015 through the 2026 data cut-off, though the most recent one to two years are undercounted because publication typically lags filing by around 18 months.
The ranking covers 100 assignees with records in this dataset, led by a single assignee holding 31 records, with the fifth-ranked holder at 10 and the tenth at 7. The top five combined account for 28.3% of all 283 records, and the top ten for 42.8%, meaning leadership is concentrated but not dominated by a single filer. Beyond the leading group there is a long tail of assignees with only one or a few filings each, indicating the field still has room for new entrants to establish position.
Filing activity grew sharply through the middle of the tracked period, rising from 18 filings in 2021 to a peak of 43 in 2024, a 139% increase. Filings recorded for 2025 and 2026 appear lower, but this reflects publication lag rather than a real slowdown, since patent applications typically take about 18 months to publish after filing. Based on the 2021-to-2024 trend, the underlying filing rate was still accelerating as of the most recent complete year.
Every record in this dataset carries the core H01M battery classification, but many also extend into adjacent chemistry classes. C01G, covering compounds of metals other than aluminium, appears in 23.0% of the 283 records and is by far the largest adjacent overlap, reflecting how cathode material claims often specify particular metal-oxide compositions. Smaller overlaps appear in C01B (non-metallic and inorganic compounds, 4.6%) and B82Y (nanotechnology applications, 3.9%), pointing to nanostructuring and coating work as secondary but active claim territory.
The United States receives the largest number of filings in this dataset at 100 records, followed by the WIPO/PCT route at 41, the European Patent Office at 37, China at 36, India at 27 and South Korea at 10. This spread suggests that a filing or freedom-to-operate strategy focused only on one or two jurisdictions would miss meaningful activity, particularly the sizeable India-based filing volume that is easy to overlook relative to the more commonly tracked US, European and Chinese offices.
Answers are grounded in the same dataset. Derived from a Patsnap search on Sodium-Ion Batteries: Layered Oxide Cathode Patent Landscape 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.