LFP Electrode Coating Patents: Who Leads, Where the Gaps Are 2026
- 61 families total, with filings peaking at 12 in 2023 and no clear acceleration since — the midpoint year (2022, 7 filings) sits below peak, suggesting the field has plateaued rather than taken off.
- China, Europe and the US each account for a similar share of receiving offices (17, 16 and 15 respectively), so this is a genuinely multi-jurisdictional filing pattern, not a single-market race.
- No single assignee dominates recent momentum; the most active named filer in the latest year shows just one filing, and several previously active assignees show zero — ownership of this space is still unsettled.
Filing growth compares 2021 (1 records) with 2024 (8) — 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 61 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape tracks patent families combining lithium iron phosphate (LFP) chemistry with electrode coating process claims — slurry coating, calendering, dry electrode formation and electrode drying — filed against IPC classes covering active material processing (H01M4/04, H01M4/139, H01M4/1391). It captures the process layer of LFP manufacturing rather than the cathode chemistry itself, so records here are about how the coating is made and applied, not what the active material is made of.
The dataset spans filings from 2015 through the 2026 data cut-off. Because publication typically lags filing by around 18 months, the most recent one to two years of activity in any trend line will look thinner than actual filing volume — treat the tail as a floor, not a ceiling.
Filing trends and technology composition
Two views of the same 61-family dataset: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
A peak in 2023, then a pullback
Filings rose from a single record in 2017 to a peak of 12 in 2023, but 2022's midpoint count of 7 sitting below that peak — combined with a flat 2026 partial-year figure of 2 — points to a plateau rather than sustained growth. Read the final one to two years cautiously given publication lag.
Concentrated in H01M, with thin secondary clusters
Every record in this set classifies under H01M (batteries, cells & fuel cells), as expected given the search construction. Secondary clusters are thin: non-metallic compounds (C01B, 6 records), mixing/stirring equipment (B01F, 3), nanotechnology applications (B82Y, 3) and polymer chemistry (C08G, C08L, 3 each). Coating-specific classifications (B05D, B05B) appear in only 3 records combined — a sign that process claims here are mostly filed as battery-electrode claims rather than as general coating-technology claims.
Shares are the percentage of the 61 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Lithium Iron Phosphate Battery Electrode Coating Process with Eureka
This page is one run against one query. Ask Eureka your own question about lithium iron phosphate battery electrode coating process and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited prior art in this set
Lithium iron phosphate battery coated electrode and method (US20250336964A1)
A lithium iron phosphate battery and method for making the battery is provided. The lithium iron phosphate battery includes a lithium iron phosphate (LFP) cathode, a lithium anode, and a liquid electrolyte. The lithium iron phosphate (LFP) cathode has a coating adhered thereto. The coating includes a first material more than 70% by weight and a second material less than 30% by weight. The first material has a mean particle size (D50) of 10 micrometers (μm), and the second material has a mean particle size (D50) of 1 μm. The liquid electrolyte transports positively charged ions between the lithium anode and the LFP cathode. The liquid electrolyte includes between 1.0 and 1.5 M LiPF6 and betweFiled by GM Global Technology Operations LLC, published 2025-10-30 — one of the most recent records in the dataset.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20150200395A1 | Method of making a cathode slurry and a cathode | 18 |
| 2 | CN103337606A | 一种提高锂动力电池性能的方法 | 17 |
| 3 | CN115440932A | 一种负极片及其制备方法和磷酸铁锂电池 | 8 |
| 4 | US20200295347A1 | Method of Preparing Slurry Composition for Secondary Battery Positive Electrode, Positive Electrode for Secon… | 8 |
| 5 | CN115172674A | 一种磷酸铁锂正极、制备方法及包括其的电池 | 7 |
| 6 | CN112186259A | 一种动力锂离子电池的制备方法 | 7 |
| 7 | CN104979562A | 一种过放电能至0V的锂离子电池复合正极及其制备方法和应用 | 7 |
| 8 | US20100167127A1 | Lithium iron phosphate battery electrode and method for manufacturing the same | 7 |
| 9 | US20220227629A1 | Carbon nanotube nanocomposite based lithium-ion battery | 5 |
| 10 | EP4195320A1 | Cathode slurry composition for secondary battery, cathode manufactured using same, and secondary battery comp… | 4 |
Citation counts are drawn from the searched corpus only and skew toward older filings — treat them as a measure of influence on later filers, not 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.
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Three read-outs from the filing, classification and citation data that matter for a filing or freedom-to-operate decision.
The activity peak has already passed
Filings peaked at 12 in 2023 and the midpoint year (2022) sits at 7 — below that peak — with 2026 partial-year data showing only 2. Even allowing for publication lag understating the most recent years, this is not a market still accelerating into a land grab.
No single office dominates receiving filings
China, Europe and the US each receive a comparable share of filings (17, 16, 15), with WIPO PCT, India and Germany trailing. This is a technology being protected across three major markets roughly in parallel rather than concentrated behind one jurisdiction's manufacturers.
Process claims are filed as battery claims, not coating claims
Every record classifies under H01M, while dedicated coating-process classes (B05D, B05B) cover only 3 records combined. Anyone searching this space using general coating-technology classification codes alone would miss almost the entire dataset.
Co-filing is concentrated around one applicant cluster
Of 10 identified co-assignee pairs, the three strongest all involve the same corporate entity paired with different named inventors — a pattern typical of a single organisation's inventor team rather than cross-company joint filing.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to lithium iron phosphate battery electrode coating process, with the prior art for and against each one.
Who is filing, and who has gone quiet
Recent-year momentum diverges sharply from historical filing presence: most named assignees with a filing history show no activity in the latest tracked year, while at least one newer entrant is still filing.
LG Energy Solution is the only assignee still filing
Among the tracked assignees, LG Energy Solution (LG Energy Solution, Ltd.) is the sole name showing a filing in the most recent year, at 1 family. Every other tracked assignee — including established filers — shows zero in that same window.
Several historically active filers show no recent activity
Duracell U.S. Operations, Eterne Battery, Gillette and X MAT Battery IP Holdings all register zero filings in the latest tracked year despite prior presence in the dataset, including X MAT's co-assignee network with named individual inventors.
X MAT Battery IP Holdings files through a consistent inventor team
X MAT Battery IP Holdings LLC appears in three separate co-assignee pairings, each with a different named individual inventor at a count of 3 — evidence of a small, stable inventing team rather than broad cross-organisation collaboration.
| Assignee | Recent year | YoY |
|---|---|---|
| LG Energy Solution, Ltd. | 1 | — |
| Duracell U.S. Operations, Inc. | 0 | — |
| Eterne Battery Co. | 0 | — |
| The Gillette Company | 0 | — |
| X MAT BATTERY IP HLDG LLC | 0 | — |
| SHERWOOD WALTER | 0 | — |
| MARCUS KYLE | 0 | — |
| HILL ARNOLD | 0 | — |
Where to take this analysis
The filing and classification data point to a field with settled process claims and thin coverage in a few adjacent branches. Two directions follow from that.
Check freedom-to-operate against the H01M core
With all 61 records classifying under H01M, any new coating process claim needs to be checked against that dense core before assuming an adjacent IPC class is clear.
Run a freedom-to-operate search in EurekaWatch the assignees still filing
Only one tracked assignee shows latest-year momentum. Tracking who resumes filing after a quiet period can flag renewed commercial interest before it shows up in product announcements.
Set up assignee monitoring in EurekaCommon questions about this landscape
This dataset identifies 61 patent families filed between 2015 and the 2026 data cut-off that combine LFP chemistry terms with electrode coating process language (slurry coating, calendering, dry electrode, electrode drying) under the relevant H01M active-material IPC classes. That count reflects families, which is the fairer unit than raw document counts since it neutralises duplicate continuation and multi-jurisdiction filings of the same invention. The true figure for the field as a whole will be somewhat higher once broader search terms and adjacent IPC classes are included, but this scope captures the coating-process-specific core.
Not clearly. Filings rose from a single record in 2017 to a peak of 12 in 2023, but the 2022 midpoint sits at 7 — below that peak — and the partial 2026 figure shows only 2 filings so far. Publication lag of roughly 18 months means the most recent one to two years will always look thinner than final totals, but even accounting for that, the trend reads as flat-to-declining rather than accelerating.
The dataset shows a fragmented ownership picture rather than one dominant holder: co-assignee analysis surfaces a cluster around X MAT Battery IP Holdings LLC filing with a small, consistent set of named inventors, while LG Energy Solution is the only tracked assignee showing a filing in the most recent year. Several other named assignees — including Duracell U.S. Operations, Eterne Battery and Gillette — appear in the historical data but show zero filings in the latest tracked year. This suggests the space has no settled incumbent leader at present.
US20250336964A1, assigned to GM Global Technology Operations LLC and published 2025-10-30, claims a lithium iron phosphate battery with a coated cathode where a first coating material makes up more than 70% by weight with a 10 micrometre mean particle size, and a second material makes up less than 30% by weight with a 1 micrometre mean particle size, paired with a liquid electrolyte in a defined LiPF6 concentration range. It is one of the most recent filings in this dataset and illustrates the kind of narrow, particle-size-and-ratio-specific claim structure that is now common in this space. Anyone designing a similar dual-particle-size coating should review this filing's specific ratio and size boundaries closely.
The IPC composition data points to several thinly covered branches relative to the dense H01M core: dry electrode film formation, polymer binder chemistry for calendering (C08G/C08L classes, 3 records each), spray-based coating deposition (B05B, 1 record) and nanoparticle dispersion aids overlapping with B82Y nanotechnology classifications (3 records). These are not empty categories, but their record counts are an order of magnitude below the H01M total, meaning claim space there is comparatively open. Any filing strategy in this field should start by checking these branches for recent activity before assuming they remain clear.
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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.