Sodium-Ion Battery Manufacturing Process Patent Landscape
Sodium-Ion Battery Manufacturing Process Patent Landscape in 2026
The patent corpus for sodium-ion battery manufacturing processes is nascent, comprising 4 patent families concentrated entirely in China among a small group of new entrants. Activity emerged only from 2023, signalling an early-stage field where foundational process IP is still being established.
A nascent, China-centric field led by Suzhou Hanna Materials Technology
Suzhou Hanna Materials Technology holds the top position with 2 patent records, followed by Shuangdeng Group, Zhejiang Huayu Sodium Battery New Energy Technology, and Jiangsu Front New Energy, each with 1 patent record.
The top five filers account for 100% of the combined total across the hundred largest filers, reflecting extreme early-stage concentration with no second tier yet discernible.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Suzhou Hanna Materials Technology Co., Ltd. | 2 | |
| 2 | Shuangdeng Group Co., Ltd. | 1 | |
| 3 | Zhejiang Huayu Sodium Battery New Energy Technology Co., Ltd. | 1 | |
| 4 | Jiangsu Front New Energy Co., Ltd. | 1 |
The leaders’ positions are those of new entrants rather than established incumbents; all four active applicants carry a new-entrant momentum signal, indicating that no player has yet built a defensible patent portfolio in manufacturing process IP for sodium-ion batteries.
The most recent filing periods are subject to publication lag, so current activity may be higher than the counts suggest. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity began in 2023; technology mix centres on battery cell and electrode IP
The annual trend and technology-composition charts together reveal a field that surfaced abruptly in 2023 and remains technically narrow, dominated by core battery and electrode classifications.
Annual filing trend
No filings appear before 2023; a burst of 3 patent records was filed that year, with 1 record in 2025. The 2024 and 2026 slots show zero counts, though the most recent periods are likely under-represented due to publication lag and should not be read as a halt in activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
All 4 patent records fall under H01M (batteries, cells and fuel cells), confirming that filings are tightly focused on core cell and electrode manufacturing. Smaller adjacent branches — C01B (non-metallic elements and inorganic compounds) and C01G (compounds of other metals) — each carry 1 record, hinting at precursor-material process steps but not yet forming a meaningful body of IP.
↗ 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.
一种钠离子电池制造工艺
发明公开了一种钠离子电池制造工艺，具体涉及电池制造领域，包括如下步骤：步骤S1，称取一定量的草酸钠、氧化锰和氧化镁，将草酸钠、氧化锰和氧化镁加入到研磨机中进行研磨，然后放入到加温炉中进行一次煅烧，室温冷却后再次进行研磨，接着再放入到加温炉中进行二次煅烧，得到钠离子电池正极材料；步骤S2，选取杨木屑，将其放入到加温炉中进行碳化处理，将杨木屑与草酸钠进行均匀混合，然后放入到加温炉中进行加热，得到钠离子电池负极材料；步骤S3，将六氟磷酸钠溶解在碳酸二甲酯中，加入碳酸亚乙烯酯进行搅拌，得到电解液。本发明提升负极材料的储钠能力和结构稳定性，对电池整体性能提升有益，减少电池内阻，提升充放电效率。 (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 防止胀气的钠离子电池软包电芯制造工艺 | 3 |
| 2 | 一种钠离子电池制作工艺 | 2 |
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 competitive structure means for R&D investment decisions
With only 4 patent families on record and all applicants classified as new entrants, the field presents an unusually open landscape. The observations below frame where risks and openings lie.
Pre-commercial: life-cycle stage not yet determinable
Activity only emerged in 2023, and the evidence base is too small to assign a formal life-cycle stage. The field is at its very earliest phase of IP formation. An engineer entering now would be competing against new entrants, not entrenched patent holders.
Early-stageExtreme concentration among a handful of Chinese specialists
The top five filers account for 100% of the top-100 filers’ combined total. Suzhou Hanna Materials Technology is the single most active filer with 2 patent records. This concentration reflects the absence of large multinationals or tier-one battery manufacturers in process-specific filings, leaving the space structurally open for additional players.
High concentrationOne co-filing pair identified: Jiangsu Front New Energy and Shuangdeng Group
The only co-applicant relationship on record is between Jiangsu Front New Energy (Jiangsu Shuangdeng Fulangter New Energy) and Shuangdeng Group, who share 1 jointly filed patent record. This parent-affiliate dynamic suggests internal knowledge-sharing rather than cross-industry collaboration. No academic or cross-sector partnerships are evident in the data.
Limited ecosystemAll 4 patent records filed exclusively in China
Every filing in scope designates China as the sole jurisdiction. This means manufacturing process IP for sodium-ion batteries has not yet been filed in major markets such as the United States, Europe, Japan, or South Korea. For an entrant targeting global commercialisation, filing internationally would face minimal prior-art obstruction in those jurisdictions at present.
China-onlyGo 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 |
|---|---|---|
| Jiangsu Front New Energy Co., Ltd. | Shuangdeng Group Co., Ltd. | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Suzhou Hanna leads; all active filers are new entrants
Four applicants have filed in this space, all entering from 2023 onward with no prior-period baseline. Technology focus is uniformly anchored in H01M cell and electrode classifications.
Suzhou Hanna Materials Technology
Holds 2 patent records — the largest single portfolio in this corpus — concentrated in H01M 10 (battery cells) and H01M 4 (electrodes), with an additional filing touching C01B 32 (non-metallic inorganic compounds). Momentum is flagged as a new entrant, indicating recent first-time activity with no established prior base.
patent records: 2Zhejiang Huayu Sodium Battery New Energy Technology
Holds 1 patent record covering both H01M 10 and H01M 4 classifications. Also classified as a new entrant, this applicant represents a sodium-battery-focused specialist whose trajectory in process IP is at its inception and warrants monitoring as the field matures.
patent records: 1| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Suzhou Hanna Materials Technology Co., Ltd. | 1 | ▲ new entrant |
| Zhejiang Huayu Sodium Battery New Energy Technology Co., Ltd. | 1 | ▲ new entrant |
| Jiangsu Front New Energy Co., Ltd. | 1 | ▲ new entrant |
| Shuangdeng Group Co., Ltd. | 1 | ▲ new entrant |
Under-served adjacent branches worth monitoring
With no formally identified white-space candidates in the evidence and a corpus of only 4 patent families, the IPC branches adjacent to the dominant H01M class are observations of relative sparsity rather than validated opportunities. Two branches merit attention for teams evaluating where process IP may develop.
C01B · Non-metallic elements and inorganic compounds (precursor synthesis)
Only 1 patent record touches this branch, covering hard-carbon or other non-metallic precursor synthesis steps relevant to anode manufacturing. Given that hard carbon is the dominant anode material in sodium-ion cells, this branch is technically adjacent and under-served relative to cell-level filings. An entry path exists for teams developing proprietary precursor or carbonisation processes.
Search this in Eureka →C01G · Compounds of other metals (cathode material processing)
One patent record falls under C01G, which covers metal-compound synthesis relevant to cathode active material preparation — a critical manufacturing step for layered oxide or Prussian-blue cathodes. Filing activity here is sparse despite the material’s centrality to sodium-ion cell performance, suggesting that cathode-material process IP remains largely unpublished or not yet filed.
Search this in Eureka →How the four active filers differ by technology route
Strength of each leader across the main technology routes.
| Player | H01M 10 · Batteries, cells & fuel cells | H01M 4 · Batteries, cells & fuel cells | C01B 32 · Non-metallic elements & inorganic compounds | C01G 45 · Compounds of other metals |
|---|---|---|---|---|
| Suzhou Hanna Materials Technology Co., Ltd. | Strong · 2 | Strong · 2 | Moderate · 1 | Moderate · 1 |
| Zhejiang Huayu Sodium Battery New Energy Technology Co., Ltd. | Strong · 1 | Strong · 1 | Absent | Absent |
| Shuangdeng Group Co., Ltd. | Strong · 1 | Absent | Absent | Absent |
| Jiangsu Front New Energy Co., Ltd. | Strong · 1 | Absent | Absent | Absent |
Frequently asked questions
The current evidence scope contains 4 patent families. This is a very small corpus, consistent with the field’s nascent status and the fact that filing activity only began in 2023.
Suzhou Hanna Materials Technology is the leading filer with 2 patent records. Shuangdeng Group, Zhejiang Huayu Sodium Battery New Energy Technology, and Jiangsu Front New Energy each hold 1 patent record.
All 4 patent records in scope are filed exclusively in China. No filings have been identified in the United States, Europe, Japan, South Korea, or other major jurisdictions based on the current evidence.
The trend data shows no filings before 2023. Three patent records were filed in 2023 and one in 2025, with the 2024 and 2026 slots at zero — though the most recent periods may be under-counted due to publication lag.
All 4 patent records fall under H01M (batteries, cells and fuel cells), confirming a focus on core cell and electrode manufacturing. C01B (non-metallic elements and inorganic compounds) and C01G (compounds of other metals) each carry 1 record, covering precursor and cathode-material synthesis steps.
One co-filing is on record, between Jiangsu Front New Energy and Shuangdeng Group, which share a parent-affiliate relationship. No cross-industry or academic co-applicant activity has been identified in the evidence.
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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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