Emerging Battery Chemistries Patents: Who Leads, Where the Gaps Are 2026
- One filer holds 40 records while the fifth-ranked assignee has only 7 — concentration drops off sharply after the leader.
- Filing activity peaked in 2018 at 25 records and the 2021-2024 window shows a 29% decline, though 2025-2026 figures are still filling in due to publication lag.
- H01M covers 75.1% of the 169 records in scope but H02J, C01B and C01G each sit under 18%, pointing to concentrated core claims and thinner coverage elsewhere.
Filing growth compares 2021 (14 records) with 2024 (10) — 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 169 records in scope (CR5), not by the ranked leaders only.
What the data covers
This landscape draws on 169 published records filed between 2015 and 2026 that combine emerging battery chemistry terminology with functional claim language such as state of charge, electrode capacity, electrolyte stability and cell balancing. The scope is deliberately narrow: it captures documents that describe both a chemistry angle and a measurable performance or management characteristic, rather than every battery filing in the period.
Because publication lags filing by roughly 18 months, the most recent one to two years in any trend understate real filing activity. Treat 2024 as the last complete year for growth comparisons, and read 2025-2026 counts as a floor, not a ceiling.
Filing trends and technology composition
Two views of the same 169 records: how filing activity has moved year over year, and which IPC subclasses carry the claim volume.
Filing activity: a 2018 peak, then a real but partial decline
Filings ran 17 in 2017 and peaked at 25 in 2018. The 2021-to-2024 window, the last stretch with complete publication, shows a drop from 14 to 10 records — a 29% decline. Figures from 2025 onward are still arriving and should not be read as a continued slide.
Technology composition: battery core claims dominate
H01M (batteries, cells & fuel cells) appears on 75.1% of the 169 records, confirming that most filings anchor their claims in core cell construction or chemistry. H02J (power supply & grid systems) reaches 17.8%, while inorganic compound classes C01B and C01G sit near 7%, and measurement (G01R) and capacitor (H01G) classes trail further behind — each record can carry more than one class, so these shares overlap.
Shares are the percentage of the 169 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Emerging Battery Chemistries Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about emerging battery chemistries patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this dataset
EP4246763A1 — combining cell cores by capacity and state of charge
The application describes acquiring the capacity and state of charge of N cell cores, generating an initial battery pack population from different core combinations, then iterating that population with a genetic algorithm until a pack configuration meeting a preset condition is reached.Filed by Guangzhou Xiaopeng Motors Technology Co. Ltd., published 2023-09-20.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6551744B1 | Positive electrode active material and non-aqueous electrolyte secondary battery containing the same | 109 |
| 2 | US6268087B1 | Method of preparing lithium ion polymer battery | 73 |
| 3 | US20180138554A1 | Rechargeable Aluminum Ion Battery | 55 |
| 4 | US6090504A | High capacity composite electrode and secondary cell therefrom | 44 |
| 5 | US20110181242A1 | Multi-chemistry battery charging system and method of identifying and improved charging technique for primary… | 38 |
| 6 | US20180090942A1 | System, method, and apparatus for charging a battery-powered accessory from a primary battery-powered device | 30 |
| 7 | US20060051659A1 | Device, system and method for improving efficiency and preventing degradation of energy storage devices | 29 |
| 8 | US20180241042A1 | Functionalized metal oxide nanoparticles and lithium anode for lithium-sulfur battery including the same | 17 |
| 9 | US6057056A | Composite electrode and secondary battery therefrom | 17 |
| 10 | US20220352501A1 | Biomass derived porous carbon materials, composites and methods of production | 12 |
Citation counts inside this corpus skew toward older filings and are a signal of influence within the searched set, not a measure of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Three findings that shape where to file next and how much weight to put on any single trend line.
The lead is real, but shallow beyond fifth place
The leading assignee holds 40 records against a fifth-place count of 7 — a steep drop-off. The top 10 combined reach 59.8% of all 169 records, meaning close to 40% of the field is spread across a long tail of single- or few-filing entrants.
A genuine three-year decline, not a data artefact
The 2021-2024 span is the most recent window with complete publication, and it shows filings falling from 14 to 10 — a 29% drop. The 2018 peak of 25 records has not been approached since, suggesting the field's most active filing period has already passed for this specific claim combination.
Core cell claims are dense; systems-level claims are thinner
Three in four records touch H01M battery and cell construction, while power-supply and grid-system claims under H02J appear on well under a fifth of records. Measurement (G01R, 6.5%) and capacitor (H01G, 5.3%) classes are thinner still, marking where claim space has room.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to emerging battery chemistries patent landscape, with the prior art for and against each one.
Who is filing, and where the gaps sit
The ranking covers 80 companies across the 169 records in scope — it is the full ranking the dataset returns, not a top-50 or top-100 cut.
One filer sets the pace by a wide margin
The leading assignee's 40 records dwarf the fifth-place count of 7, so most competitive-intelligence attention should start there before spreading to the long tail.
A crowded middle with room to move
Between the leader and the tenth-ranked filer at 5 records, the field narrows quickly, meaning a well-timed filing in an adjacent sub-area can still register as material within this set.
Institutional partnerships cluster around a few names
The strongest co-assignee pairs recur around the same handful of organisations, including university-corporate combinations, indicating that some of the leading filing volume is produced through joint programmes rather than in-house alone.
| Assignee | Recent year | YoY |
|---|---|---|
| LG Energy Solution Ltd | 0 | — |
| LG Chem Ltd | 0 | — |
| Nissan Motor Co Ltd | 0 | — |
| GALGANA JOSEPH R | 0 | — |
| KELLY SHAWN P | 0 | — |
| Daegu Gyeongbuk Institute of Science and Technology | 0 | — |
| Yazaki Corporation | 0 | — |
| Neograf Solutions LLC | 0 | — |
Where to take this next
The dataset points to specific follow-up work rather than a single conclusion.
Check freedom-to-operate in thinner IPC classes
Classes like G01R, H01G and B65H carry far fewer records than H01M — worth a targeted search before assuming open ground, since low density is not the same as no coverage.
Explore white space in EurekaWatch the second tier, not just the leader
With 40% of records held outside the top 10 assignees, competitive shifts are as likely to come from the long tail as from the named leader.
Track assignee activity in EurekaRe-run the trend once 2025-2026 publications land
The apparent 2021-2024 decline is real but the most recent years are still incomplete; revisit the growth figure in a future cut before drawing a firm conclusion.
Set up a monitoring search in EurekaCommon questions about this landscape
Within this dataset of 169 records, one assignee holds 40 records — well ahead of the fifth-ranked filer at 7. The top 10 assignees together account for 59.8% of all records in scope, but the ranking covers 80 companies in total, so a substantial share of activity sits with smaller, single- or few-filing entrants. Anyone tracking competitive movement should watch both the dominant filer and the crowded second tier, since the gap narrows quickly after the leader.
Filings peaked at 25 records in 2018 and, over the most recent complete window, fell from 14 records in 2021 to 10 in 2024 — a 29% decline. That said, publication lags filing by roughly 18 months, so 2025 and 2026 figures are still incomplete and should not be read as continuing the same downward trend. A fair read is that the field's most active filing period has passed relative to 2018, with a genuine but partial cooling since 2021.
Three-quarters of the 169 records (75.1%) fall under IPC subclass H01M, covering batteries, cells and fuel cells, confirming that most claims center on core cell construction and chemistry. Power supply and grid systems (H02J) appear on 17.8% of records, with inorganic compound classes C01B and C01G each near 7%. Because a single record can carry multiple IPC classes, these percentages overlap rather than sum to 100%.
The clearest gaps sit in classes with much lower density than the dominant H01M core: measurement and monitoring (G01R at 6.5%), capacitors (H01G at 5.3%) and web/sheet handling processes (B65H at 5.3%) all trail far behind battery-cell claims. Sub-areas like cell-balancing algorithms for mixed-chemistry packs and non-lithium inorganic electrode compounds show lighter claim density in this dataset. Low density is a starting signal for a freedom-to-operate search, not proof the space is open.
EP4246763A1, filed by Guangzhou Xiaopeng Motors Technology Co. Ltd. and published 2023-09-20, describes a method for combining battery cell cores based on their capacity and state of charge. It generates an initial battery pack population from different core combinations, then applies a genetic algorithm iteratively until a pack configuration meeting a preset condition is produced. Anyone building automated pack-assembly or cell-sorting systems that rely on capacity-and-state-of-charge grouping via iterative optimisation should review this filing's specific claim scope before designing a similar workflow.
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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.