Binder Systems for Silicon Anodes Patents: Top Companies & Trends 2026
- 10.6% held by five firms. The top 5 assignees combined account for 7,605 of the 71,737 records in scope, with a long tail of single- and few-filing entrants below tenth place.
- Filing cooled after a 2023 peak. Filings reached 1,149 in 2023 before easing; 2021 to 2024 shows a 22% decline (1,126 to 881), though 2025-26 figures are still filling in due to publication lag.
- Core battery class is a minority of the corpus. Only 11.5% of records sit in H01M (batteries, cells & fuel cells), meaning most of this field's claim activity is filed under polymer, coating and nonwoven classifications rather than battery-specific codes.
Filing growth compares 2021 (1,126 records) with 2024 (881) — 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 71,737 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape tracks binder systems for silicon anodes across 71,737 published records filed between 2015 and mid-2026, using a search built on binder-specific terms (including dual-functional and self-healing binders) combined with performance claims such as adhesion retention, ionic and electronic conduction, aqueous processing compatibility, slurry rheology, coating quality, binder content and energy density. The scope deliberately spans beyond battery-specific classification, since binder chemistry claims are frequently filed under polymer, coating and nonwoven codes rather than under electrochemistry codes directly.
Family-level counting is used throughout so that continuation filings and multi-jurisdiction duplicates do not inflate any single assignee's apparent position. Readers should treat the most recent one to two years of the trend as understated, since publication typically lags filing by around 18 months.
Filing trend and technology composition
Two views of the same 71,737-record corpus: how filing volume has moved year over year, and which technology classes the claims actually sit in.
Filing trend, 2017-2026
Annual filings rose from 767 in 2017 to a peak of 1,149 in 2023. The 2021-2024 window shows a 22% decline (1,126 to 881) on a complete-year basis; 2025 and 2026 counts are still incomplete because of publication lag and should not be read as a continued fall.
Technology composition by IPC subclass
H01M (batteries, cells & fuel cells) covers 11.5% of the 71,737 records, followed by C08L polymer compositions at 3.6% and C09D coatings, paints & inks at 3.2%. Because records can carry multiple IPC classes, these shares do not sum to 100% and each is measured against the full record total, not against each other.
Shares are the percentage of the 71,737 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Binder Systems for Silicon Anodes with Eureka
This page is one run against one query. Ask Eureka your own question about binder systems for silicon anodes and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited prior art
Ultracapacitor electrode with controlled binder content
Particles of active electrode material are made by blending or mixing a mixture of activated carbon, optional conductive carbon, and binder. In selected implementations, binder content in the electrode material is relatively low, typically the binder content of the mixture being between about 3 percent and about 10 percent by weight. The electrode material may be attached to a current collector to obtain an electrode for use in various electrical devices, including a double layer capacitor. The composition of the mixture increases the energy density and the integrity of the electrode.Filed by Tesla, Inc. in 2007; the low binder-content range claimed here is a recurring reference point for later electrode-binder filings in this corpus.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US8110135B2 | Process and freeform fabrication system for producing a three-dimensional object | 618 |
| 2 | US5830548A | Articles of manufacture and methods for manufacturing laminate structures including inorganically filled shee… | 604 |
| 3 | US5599638A | Aqueous liquid feed organic fuel cell using solid polymer electrolyte membrane | 557 |
| 4 | US5661213A | Curable aqueous composition and use as fiberglass nonwoven binder | 521 |
| 5 | US6331350B1 | Polycarboxy/polyol fiberglass binder of low pH | 492 |
| 6 | EP0583086A1 | Curable aqueous composition and use as fiberglass nonwoven binder | 477 |
| 7 | US6899994B2 | On-press developable IR sensitive printing plates using binder resins having polyethylene oxide segments | 473 |
| 8 | US5672198A | Aqueous inks and coatings containing modified carbon products | 433 |
| 9 | US5432000A | Binder coated discontinuous fibers with adhered particulate materials | 403 |
| 10 | US20080213696A1 | Negative Working, Heat-Sensitive, Lithographic Printing Plate Precursor | 375 |
Citation counts reflect influence within this searched corpus and skew toward older filings; they are not a measure of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the numbers mean for filing strategy
The concentration, trend and citation data together point to a field with an occupied core and open edges.
Leadership is thin, not dominant
The top 5 assignees combined hold 10.6% of the 71,737 records in scope (7,605 records), and the top 10 hold 17.3% (12,412 records). That leaves the large majority of filings spread across a long tail, which suggests no single player has locked up core binder chemistry claims.
Volume eased from a 2023 peak
Filings climbed to a peak of 1,149 in 2023, then the complete-year window from 2021 to 2024 shows a 22% decline (1,126 to 881). The most recent one to two years understate true activity because of publication lag, so this should be read as a plateau after a filing surge rather than a confirmed downturn.
Claims sit outside battery-specific codes
Only 11.5% of the 71,737 records classify under H01M batteries, cells & fuel cells. Polymer composition (C08L, 3.6%), coatings (C09D, 3.2%) and addition polymers (C08F, 2.4%) each carry meaningful shares, meaning binder-specific claim language is often filed through materials-science classifications rather than electrochemistry ones.
Foundational prior art predates silicon-anode focus
The most-cited records in this corpus, including fabrication and fiberglass-binder patents cited over 500 times each, originate from adjacent materials fields rather than battery-specific work. That pattern is typical of citation counts inside a broad searched corpus: they reward age and cross-field foundational status, not present-day commercial relevance.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to binder systems for silicon anodes, with the prior art for and against each one.
Who is filing, and where activity is cooling
The ranked leaders span battery cell makers, chemicals firms and imaging companies whose polymer and coating expertise carried into binder chemistry. Momentum data show even the most active recent filers pulling back sharply.
A modest lead, not a moat
The leading assignee holds 2,486 records against a fifth-place figure of 1,145 and a tenth-place figure of 875 — a gradual taper rather than a cliff. That shape is consistent with a field where core binder chemistry is contestable rather than locked up by one filer.
Even active filers are pulling back sharply
Assignees with the highest recent-year filing counts, including a leading Korean battery maker at 10 filings and a Chinese battery major at 2 filings in the latest year, show year-over-year declines of 82-95%. Given publication lag, some of this reflects incomplete recent-year data rather than a genuine retreat.
Filing partnerships cluster around a few firms
Ten co-assignee pairs are recorded, with the strongest links joining a leading Korean battery maker to an affiliated electronics firm, and separate links between a battery major and university research units. This pattern points to structured joint R&D rather than incidental co-filing.
| Assignee | Recent year | YoY |
|---|---|---|
| Samsung SDI Co., Ltd. | 10 | -93% |
| LG Energy Solution, Ltd. | 6 | -83% |
| Contemporary Amperex Technology Co., Ltd. (CATL) | 2 | -82% |
| BASF SE | 1 | -50% |
| Daikin Industries, Ltd. | 1 | -95% |
| Zeon Corporation | 0 | — |
| LG Chem, Ltd. | 0 | — |
| Hewlett Packard Development Company, LP | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, sourcing partners or spotting open claim space.
Map claim language against the top-cited prior art
Start from the highest-cited records in this corpus to understand which binder-content and adhesion claim structures are already well established before drafting new claims in the same space.
Explore prior art in EurekaTrack the assignees still filing actively
Recent-year momentum data shows sharp pullbacks even among the most active filers; watching which assignees resume filing once 2025-26 data completes will indicate where competitive interest is regrouping.
Set up assignee tracking in EurekaTest the under-claimed branches
Nonwoven substrate integration, condensation-polymer binder systems and dual-conduction architectures show thinner coverage than the H01M core, which may leave room for differentiated claims.
Run a white space search in EurekaFrequently asked questions
The leading assignee in this corpus holds 2,486 records, with the field then tapering gradually rather than dropping sharply — fifth place sits at 1,145 records and tenth place at 875. The top 5 assignees combined account for 10.6% of the 71,737 records in scope, and the top 10 account for 17.3%. That distribution indicates broad participation across battery makers, chemicals firms and materials companies rather than control by one or two entities.
Filings peaked at 1,149 in 2023 and the complete-year data from 2021 to 2024 shows a 22% decline, from 1,126 to 881. However, 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months, so this should be read as a plateau after a filing surge rather than a confirmed slowdown. Anyone using this trend for planning should treat the most recent one to two years as provisional.
Only 11.5% of the 71,737 records in this corpus classify under H01M, the batteries, cells and fuel cells subclass. A binder is fundamentally a polymer or coating formulation, so many claims are filed under classifications like C08L (polymer compositions, 3.6%), C09D (coatings, paints and inks, 3.2%) and C08F (addition polymers, 2.4%) instead. This means a classification-only search for battery patents will miss a large share of relevant binder chemistry filings.
US20070146966A1, assigned to Tesla, Inc. and filed in 2007, claims an electrode material made from activated carbon, optional conductive carbon and binder, with binder content specifically constrained to roughly 3 to 10 percent by weight, aimed at ultracapacitor electrodes. It is a useful reference point because it establishes a low binder-content range tied to energy density and electrode integrity, but its scope is bounded to that composition and content range rather than to binder chemistry generally. New work using different binder chemistries, different content ranges, or targeting battery rather than ultracapacitor electrodes would sit outside its claims, though a freedom-to-operate review should confirm this against the specific claim language.
The technology composition data shows comparatively thin coverage in nonwoven and felt-based binder integration (D04H, 1.6% of records) and condensation-polymer binder systems (C08G, 1.5% of records), compared to the much denser core around H01M and C08L. Dual-functional binders combining ionic and electronic conduction pathways also appear less saturated than single-function adhesion or rheology claims. These are reasonable areas to scout for differentiated claim space, though a full clearance search is needed before relying on any gap as genuinely open.
Research Binder Systems for Silicon Anodes in depth with Eureka
Go past this page: query the whole binder systems for silicon anodes corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.