LFP Electrode Coating Patent Landscape 2026
The LFP electrode coating space holds 71 patent families and is in a growth stage, with annual filings expanding sharply over the multi-year window. LG Energy Solution leads a moderately concentrated field, with the five largest filers together accounting for roughly a third of the top hundred filers’ combined patent records.
LG Energy Solution leads a fragmented but consolidating field
LG Energy Solution holds the top position with 11 patent records, followed by Duracell US Operations with 8 and Contemporary Amperex Technology (Hong Kong) Limited with 6. The ranking reflects a field where a handful of battery cell manufacturers have recently moved to establish IP positions, while specialty materials and ink companies such as Toyo Ink and Toyocolor hold equal fourth place.
The top five filers collectively account for 32% of the hundred largest filers’ combined patent records, indicating a moderately concentrated but not yet dominated landscape. The gap between the leader and the second tier is narrow — three to five patent records — meaning challengers can close ground quickly with sustained filing.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | LG Energy Solution Ltd | 11 | |
| 2 | Duracell US Operations Inc | 8 | |
| 3 | Contemporary Amperex Technology (Hong Kong) Limited | 6 | |
| 4 | Toyo Ink Mfg Co Ltd | 4 | |
| 5 | Toyocolor Co Ltd | 4 | |
| 6 | Enevate Corp | 3 | |
| 7 | Suzhou Kuka Environmental Technology Co Ltd | 2 | |
| 8 | Hengdian Group DMEGC Magnetics Co Ltd | 2 | |
| 9 | SparkZ Inc | 2 | |
| 10 | National Science and Technology Development Agency | 2 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Toyota Motor Corporation | 2 | |
| 12 | National Research Council of Italy (CNR) | 2 | |
| 13 | KHALIFA UNIV OF SCI & TECH | 2 | |
| 14 | GM Global Technology Operations LLC | 2 | |
| 15 | Sapienza University of Rome | 2 | |
| 16 | Contemporary Amperex Technology Co Ltd | 2 | |
| 17 | ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development) | 2 | |
| 18 | Johnson Matthey PLC | 2 | |
| 19 | Redoxion Ltd | 2 | |
| 20 | Epsilon Carbon Private Ltd | 2 |
The leaders’ positions imply that coating IP is being developed primarily by end-product battery manufacturers rather than pure coating-technology specialists, which creates an opening for materials-focused entrants to differentiate on process chemistry and surface-engineering depth.
Activity in the most recent 18–24 months is likely under-counted due to standard patent publication lag; the apparent moderation in 2025–2026 filings should not be read as a real slowdown. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filings have surged since 2019 and technology skews heavily toward cell-level IP
Two patterns define the field’s structure: a steep multi-year filing acceleration and a technology mix overwhelmingly anchored in battery-cell IP, with sparse coverage of adjacent coating-process and materials branches.
Annual filing trend
Filings were minimal before 2019, then rose steadily, reaching a local high around 2022–2023 and remaining elevated. The 153% recent-window growth rate confirms genuine expansion. Data for 2025 and 2026 is incomplete due to publication lag and should be treated as a floor, not a ceiling.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01M (Batteries, cells and fuel cells) dominates the IPC mix with 90 patent records, reflecting that most filings claim electrode coating in the context of complete cell performance. Non-metallic elements and inorganic compounds (C01B), coating processes (B05D), and nanotechnology applications (B82Y) each appear with only a small number of records — a structural gap that signals where coating-process expertise is underdeveloped relative to the cell-level framing.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Lithium iron phosphate (LFP) cathode active materi…
The embodiments herein provide lithium iron phosphate (LFP) cathode active materials and a method for deposition of the LFP active materials on an aluminum-foil current collector for lithium-ion (Li-ion) batteries. The embodiments herein utilize an aqueous based LFP precursor slurry made using combustion chemistry, where the LFP precursor slurry is composed… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Nonaqueous electrolyte secondary battery and metho… | 32 |
| 2 | Nonaqueous electrolyte secondary battery and metho… | 20 |
| 3 | 一种提高锂动力电池性能的方法 | 17 |
| 4 | Method of making a cathode slurry and a cathode | 16 |
| 5 | 一种锂离子正极涂层及锂离子电池 | 13 |
| 6 | 一种磷酸铁锂厚电极及其制备方法和应用 | 12 |
| 7 | Method of Preparing Slurry Composition for Seconda… | 8 |
| 8 | 一种磷酸铁锂正极、制备方法及包括其的电池 | 7 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the patent structure means for R&D investment decisions
The combination of a growth-stage trajectory, moderate concentration, and an H01M-heavy IPC profile points to a field where cell manufacturers are defining the dominant framing, leaving coating-process and materials chemistry relatively unclaimed.
Growth stage: annual filings still rising on a multi-year basis
The lifecycle evidence classifies LFP electrode coating as a Growth stage technology, with annual filings still rising and the most recent years understated by publication lag. The 153% recent-window growth confirms the field has not yet reached saturation. Early movers who file now can still shape the core claim landscape before it consolidates into a defensive thicket.
Growth stageModerately concentrated: top five hold 32% of the top-hundred filers’ records
With the top five filers accounting for 32% of the top hundred filers’ combined patent records and no single applicant holding a dominant share, the field remains open to new entrants. The narrow gap between the leader (11 records) and the second tier (8 records) means competitive rank is fluid. Organizations with focused coating-chemistry IP could establish a top-five position within two to three filing cycles.
Moderate concentrationToyocolor and Toyo Ink are the only active co-filers on record
The only identified co-applicant pair is Toyocolor Co., Ltd. and Toyo Ink Mfg. Co., Ltd., who have jointly filed 4 patent records. This parent-affiliate collaboration centers on H01M4 electrode chemistry and C09K materials applications. No cross-sector or cross-institution co-filing activity is evident at this scale, suggesting the ecosystem has not yet formed the alliances common in more mature battery chemistries.
Limited co-filingUS and China lead filings; EPO and PCT routes signal global ambition
The United States leads with 26 patent records, closely followed by China with 24 and Europe (EPO) with 20. WIPO (PCT) records number 9, indicating that a meaningful share of applicants are pursuing broad international protection. Canada and India each hold 3 records, suggesting early-stage interest in emerging manufacturing jurisdictions. Germany, Austria, Brazil, and the United Kingdom each carry a small number of records.
US–China–EPO triangleGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Toyocolor Co Ltd | Toyo Ink Mfg Co Ltd | 4 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
LG Energy Solution and CATL lead; Toyo Ink affiliates bring specialty materials depth
The top positions are held by battery manufacturers filing primarily within the H01M cell-performance frame, while specialty ink and colorant companies occupy the mid-tier with a distinct materials-chemistry emphasis. All top-momentum players entered the corpus as new entrants in the recent window.
LG Energy Solution
LG Energy Solution holds 11 patent records, the largest share in the corpus, with technology emphasis concentrated in H01M4 (electrode structure) and H01M10 (secondary battery systems). Its applicant momentum shows a new-entrant trajectory in the recent window, meaning its current position was built rapidly rather than accumulated over a long baseline — a sign of deliberate, accelerated IP capture in this space.
Patent records: 11CATL / Contemporary Amperex Technology
Contemporary Amperex Technology (Hong Kong) Limited holds 6 patent records with a focus spanning H01M4, H01M10, and C01B25 (inorganic phosphate compounds), reflecting a coating strategy that extends into precursor chemistry. Contemporary Amperex Technology Co., Ltd. contributes an additional 2 patent records. Both entities entered as new entrants in the recent window, consistent with CATL’s broader LFP scale-up ambitions.
Patent records: 6 + 2| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| LG Energy Solution Ltd | 8 | ▲ new entrant |
| Contemporary Amperex Technology Co Ltd | 6 | ▲ new entrant |
| Toyocolor Co Ltd | 4 | ▲ new entrant |
| Toyo Ink Mfg Co Ltd | 4 | ▲ new entrant |
| Contemporary Amperex Technology (Hong Kong) Limited | 2 | ▲ new entrant |
| GM Global Technology Operations LLC | 2 | ▲ new entrant |
Coating-process and nanotechnology branches are under-served relative to cell-level IP
While H01M dominates the corpus, several adjacent IPC branches show sparse coverage relative to their technical relevance to electrode coating, pointing to areas where IP positions could be established with lower competitive friction.
B05D · Coating processes
With only 3 patent records, B05D (coating processes including surface treatment and deposition methods) is markedly sparse for a technology defined by its coating step. The technical value is direct: process-level claims on slurry application, drying profiles, and surface uniformity are complementary to and often more defensible than cell-level composition claims. An entrant with process engineering expertise could file foundational method claims in this branch with limited incumbent overlap.
Search this in Eureka →B82Y · Nanotechnology applications
B82Y (nanotechnology applications) holds only 3 patent records despite the well-documented role of nano-carbon coatings and nano-structured LFP in improving conductivity and rate performance. The gap between technical importance and patent coverage suggests that nano-coating approaches specific to LFP electrodes remain largely unprotected at the application level. Research institutions and specialty materials companies with nano-synthesis capabilities face a relatively open landscape in this branch.
Search this in Eureka →How leaders differ by technology route
Route coverage across the main technology branches in the current evidence set.
| Player | H01M 4 · Batteries, cells & fuel cells | H01M 10 · Batteries, cells & fuel cells | C01B 25 · Non-metallic elements & inorganic compounds | B05D 3 · Coating processes | C09K 23 · Materials for misc. applications |
|---|---|---|---|---|---|
| LG Energy Solution Ltd | Strong · 9 | Strong · 8 | Absent | Absent | Absent |
| Johnson Matthey PLC | Strong · 4 | Strong · 4 | Moderate · 2 | Absent | Absent |
| Duracell US Operations Inc | Strong · 5 | Strong · 4 | Absent | Absent | Absent |
| Toyo Ink Mfg Co Ltd | Strong · 4 | Absent | Absent | Absent | Strong · 3 |
| Toyocolor Co Ltd | Strong · 4 | Absent | Absent | Absent | Strong · 3 |
| Contemporary Amperex Technology Co Ltd | Strong · 6 | Absent | Absent | Absent | Absent |
Frequently asked questions
The corpus in scope contains 71 patent families. This figure covers global filings and is the baseline for all trend and composition analysis in this report.
LG Energy Solution Ltd leads with 11 patent records, followed by Duracell US Operations Inc with 8 and Contemporary Amperex Technology (Hong Kong) Limited with 6. Toyo Ink Mfg Co Ltd and Toyocolor Co Ltd each hold 4 patent records, sharing fourth place.
The field is classified as Growth stage. Annual filings have risen sharply over the multi-year window, with 153% growth in the recent period. The most recent 18–24 months of data are under-counted due to publication lag, so current activity is likely higher than the raw numbers suggest.
The United States leads with 26 patent records, followed by China with 24 and Europe (EPO) with 20. WIPO (PCT) accounts for 9 records, indicating applicants pursuing broad international coverage. Canada and India each hold 3 records.
Yes. B05D (coating processes) and B82Y (nanotechnology applications) each have only 3 patent records, despite their direct technical relevance to electrode coating. C09K (materials for miscellaneous applications) and B01F (mixing and stirring) are also sparse relative to the dominant H01M battery-cell framing.
LG Energy Solution, CATL (both the Hong Kong entity and the mainland parent), Toyocolor, Toyo Ink, Contemporary Amperex Technology (Hong Kong), and GM Global Technology Operations all entered the corpus as new entrants in the recent filing window, indicating that their current patent record counts were built rapidly in the most recent period.
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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.
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