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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/lithium-manganese-oxide-battery-interface-engineering-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Battery & Energy Storage · Patent LandscapeLithium Manganese Oxide Battery Interface Engineering Patents
- Only 11 published families since 2015, all classified under a single IPC subclass (H01M) — this is a narrow, still-forming claim map, not a crowded one.
- Filing peaked at five records in 2023 and the midpoint year (2022) shows only two — momentum looks flat to declining rather than accelerating.
- Citation activity clusters on two claim families, a conductive-polymer-monomer interface patent and a paired phthalocyanine additive filing, suggesting these are the routes competitors are building around.
11
Published Records
US
Leading Jurisdiction
6
Active Filers Ranked
2023
Peak Filing Year
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
A narrow, recent claim space built around interfacial stability
Lithium manganese oxide (LMO) cathodes are prone to manganese dissolution into the electrolyte during cycling, which degrades capacity over time. Patents in this dataset claim ways to control the boundary between the LMO cathode and the electrolyte — coatings, additive molecules and in situ-forming interface layers — rather than the underlying LMO chemistry itself. The corpus is small and entirely classified under a single IPC subclass, which points to a technology area still being defined rather than one with settled claim boundaries.
Filing activity begins from zero in 2017, rises unevenly, peaks at five records in 2023, and tapers into a partial, likely-understated 2026. That shape, combined with the narrow IPC footprint, suggests the field has attracted focused technical interest from a small number of research groups and companies rather than broad industrial filing.
Filing activity by year, 2015–2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Lithium Manganese Oxide Battery Interface Engineering 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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Filing Data
Filing trend and technology composition
Eleven published families span 2015 through the 2026 cut-off, with filing activity peaking in 2023 before easing back — a pattern more consistent with a narrow research niche than a scaling commercial push.
Filing activity is flat-to-declining after a 2023 peak
Filings sat at zero in 2017, rose to a midpoint of two by 2022, and peaked at five in 2023. With 2026 only partially recorded and publication lagging filing by roughly 18 months, the most recent years understate true activity, but the shape so far does not show sustained growth.
Classification is concentrated entirely in H01M
Every one of the 11 records classifies under H01M (batteries, cells and fuel cells), with no recorded spread into adjacent coating-chemistry or electrolyte-formulation subclasses — a sign that this claim map is still narrow rather than fully built out.
Shares are the percentage of the 11 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 Lithium Manganese Oxide Battery Interface Engineering covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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The records shaping this claim space
Representative Filing
Method and system for functional conductive polymer initiated cathode electrolyte interface for silicon anode-based lithium ion batteries
ENEVATE CORPORATION
Systems and methods for conductive polymer monomers as cathode additives for silicon-based lithium ion batteries may include a silicon-based anode, an electrolyte, and a cathode. The cathode may include an active material and small amounts of dispersed conductive polymer monomer additive. The cathode active material may include one or more of nickel cobalt aluminum oxide (NCA), nickel cobalt manganese oxide (NCM), lithium iron phosphate (LFP), lithium cobalt oxide (LCO), and lithium manganese oxide (LMO). The conductive polymer monomer additive may be any known monomer based on thiophene, aniline, and/or pyrrole core structures alone or in combination.Filed by Enevate Corporation, 2021-10-28 — the most-cited record in this corpus.
Most-cited records in this corpus
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20210336268A1 | Method and system for functional conductive polymer initiated cathode electrolyte interface for silicon anode… | 4 |
| 2 | US20210305560A1 | Method and system for aromatic macrocyclic compounds (phthalocyanines) as cathode additives for inhibition of… | 3 |
| 3 | US11456457B2 | Method and system for aromatic macrocyclic compounds (phthalocyanines) as cathode additives for inhibition of… | 2 |
| 4 | WO2024049763A1 | High temperature lithium-ion battery and method of making same | 1 |
| 5 | WO2023178226A1 | Electrodes and related systems and methods therof | 1 |
| 6 | US20230016274A1 | Method and system for aromatic macrocyclic compounds (phthalocyanines) as cathode additives for inhibition of… | 1 |
Ranked by in-corpus citation count. Citation counts favour older filings that have had more time to be cited — treat this as a measure of influence, not current importance.
Publication numbers are shown where the record carries one (6 of 6 rows); clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Lithium Manganese Oxide Battery Interface Engineering 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 filing pattern actually indicates
With only 11 families to work from, the signals here are directional rather than statistical — but the concentration pattern is still informative for anyone deciding where to file next.
Volume
11 families
total since 2015
A small, still-forming corpus
Eleven published families across more than a decade is thin for a battery sub-topic, meaning claim space is genuinely open in most directions rather than occupied.
Peak year: 2023 (5 records)
Classification
H01M only
100% of records
No spread into adjacent subclasses
Every record classifies under H01M with none reaching into coating-material or electrolyte-formulation subclasses that would normally sit adjacent to interface engineering.
11 of 11 records
Influence
4 citations
top-cited record
Attention clusters on two claim families
The conductive-polymer-monomer interface patent and the phthalocyanine additive pair account for the highest citation counts in the corpus, marking where follow-on filers are concentrating.
US20210336268A1 leads at 4 cites
Geography
8 of 11
filed via US route
Filing activity is US-centric
Eight of eleven records were filed through the US receiving office, against two WIPO (PCT) filings and one UK filing — a skew worth checking against your own target markets.
US 8 · WIPO 2 · UK 1
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Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to lithium manganese oxide battery interface engineering, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Lithium Manganese Oxide Battery Interface Engineering 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
Assignees
Who is filing, and how concentrated is activity
Filing here is dominated by a small set of assignees, with university-affiliated research and one specialty battery company accounting for most of the visible activity. Co-assignee links are limited and cluster tightly around one research group.
Concentration
6 pairs
co-assignee links
Activity clusters around one research group
Six co-assignee pairs appear in this dataset, and the strongest links all trace back to a single university-affiliated patent foundation working with named individual inventors.
Strongest pairs share one common assignee
Momentum
0 in latest year
across tracked assignees
No assignee shows recent-year momentum
Every tracked assignee in this dataset recorded zero filings in the latest tracked year, consistent with the broader flat-to-declining trend and the understatement typical of the most recent filing year.
Publication lag likely understates true 2025-2026 activity
Specialisation
H01M only
IPC footprint
Filers stay inside core battery classification
None of the assignees in this corpus have pushed filings into adjacent coating-material or electrolyte-formulation IPC subclasses, leaving that classification territory unclaimed by current players.
11 of 11 records confined to H01M
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Sinlion Power Battery Co. | 0 | — |
| Wayne State University | 0 | — |
| University of Virginia Patent Foundation | 0 | — |
| NIE ZIYANG | 0 | — |
| KOENIG JR GARY M | 0 | — |
| CAI CHEN | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Lithium Manganese Oxide Battery Interface Engineering 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
Next Steps
Where to take this analysis
This landscape shows where claim density sits today; the next step is testing a specific claim or filing strategy against it.
Chart your own claim against this corpus
Run a specific coating, additive or interface mechanism through a full claim comparison to see exactly which of the 11 families it overlaps with.
Open EurekaTrack assignee filing activity going forward
Set an alert on the assignees and co-assignee cluster identified here so new filings surface as soon as they publish, given the reporting lag on recent years.
Set up monitoringSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Lithium Manganese Oxide Battery Interface Engineering 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 on LMO interface engineering patents
Within this dataset, influence is best measured by in-corpus citation count rather than raw filing volume, since total volume is small. US20210336268A1, assigned to Enevate Corporation, carries the highest citation count at four, covering conductive polymer monomer additives used to form the cathode-electrolyte interface in silicon-anode cells that include LMO as an eligible cathode chemistry. A closely related pair of filings on phthalocyanine cathode additives for transition-metal dissolution suppression carries the next-highest citation counts. No single assignee dominates by volume; the field is still small enough that a handful of families define most of the visible claim territory.
It refers to techniques — coatings, electrolyte additives, or interface-forming polymers — that control the chemical and physical boundary between an LMO cathode and the surrounding electrolyte. This boundary matters because LMO is prone to manganese dissolution into the electrolyte during cycling, which degrades capacity and can poison the anode. Patents in this space claim specific mechanisms (a coating layer, an additive molecule, a monomer that polymerises in situ) intended to slow or block that dissolution, rather than claiming the LMO chemistry itself.
No — this dataset shows only 11 published families over more than a decade, all classified under a single IPC subclass (H01M), which indicates the area is lightly claimed relative to battery chemistry as a whole. Filing activity peaked at five records in 2023 and has not shown sustained growth since. That said, the citation pattern shows meaningful clustering around a small number of families, meaning the space that is claimed is being actively built on by follow-on filers.
The clearest gap is coating or additive chemistry claimed specifically as a dissolution-suppression mechanism rather than as a secondary feature of a broader electrode or additive claim — most existing records treat interfacial stability as one benefit among several. Co-assignee activity is limited to six pairs concentrated around a single university-affiliated group, which suggests most of the surrounding technical space has not been claimed by a broad set of filers. A first mover with a specific, mechanistically-described coating or additive chemistry that is not already covered by the phthalocyanine or conductive-polymer-monomer claims currently on record would be filing into genuinely open ground.
Receiving-office data in this dataset shows eight US filings against two WIPO (PCT) filings and one UK filing, meaning the visible activity is heavily US-centric. That skew may reflect where this particular search string and corpus draws its coverage rather than a global filing reality, so readers should treat it as directional evidence for where applicants have sought protection to date, not a complete picture of international activity.
Answers are grounded in the same dataset. Derived from a Patsnap search on Lithium Manganese Oxide Battery Interface Engineering 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.