Bipolar Battery Recycling Patent Landscape 2026
Bipolar Battery Recycling Patent Landscape in 2026
Bipolar battery recycling remains a nascent, highly concentrated field with only 16 patent families on record, dominated by Toyota Motor Corporation and Advanced Battery Concepts LLC. Activity surged noticeably in 2022 and 2025, and the filing base is small enough that a single new entrant can materially reshape the competitive picture.
Three applicants own the entire ranked field — Toyota leads decisively
The ranked applicant pool consists of just three entities: Toyota Motor Corporation at the top with 10 patent families, Advanced Battery Concepts LLC second with 6 patent families, and Motors Liquidation Co with 1 patent family.
The top five filers account for 100% of the hundred largest filers’ combined total, signalling near-total concentration. The tier gap between the leader and the second-ranked challenger is meaningful but not insurmountable given the field’s small absolute size.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Toyota Motor Corporation | 10 | |
| 2 | Advanced Battery Concepts LLC | 6 | |
| 3 | Motors Liquidation Co | 1 |
Toyota’s position implies a deliberate strategy to secure recycling-related IP alongside its broader bipolar battery development programme, while Advanced Battery Concepts LLC — flagged as a new entrant — has already closed the gap to a competitive 6 patent families.
The most recent filing periods are subject to publication lag and likely under-represent activity from the past 18–24 months; the apparent zero for 2024 and 2026 should not be read as a cessation of activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity clustered in 2022 and 2025; core cell chemistry dominates the technology mix
The annual filing trend and technology-branch breakdown together reveal a field that is episodic rather than steadily growing, with virtually all disclosed work anchored in battery and cell electrochemistry.
Annual filing trend
Filings were zero from 2017 through 2021, then rose to 5 in 2022, dipped to 1 in 2023, and showed a spike of 10 in 2025. The 2024 and 2026 readings are almost certainly incomplete due to publication lag and should not be interpreted as an end to activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01M (Batteries, cells and fuel cells) accounts for 17 patent records, far ahead of B09B (Solid waste disposal) at 2 and B23K (Welding, soldering and brazing) and C22B (Metal extraction and refining) at 1 each — confirming that current efforts focus on cell-level recycling design rather than downstream processing.
↗ 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.
Method of producing recycled material, and bipolar…
A method of producing a recycled material includes the following (a) to (d). (a) Preparing a bipolar battery that includes an electrolytic solution and that is sealed. (b) Forming a gas outlet hole on the bipolar battery. (c) Vaporizing at least some of the electrolytic solution by heating the bipolar battery by induction heating. (d) Retrieving the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Bipolar battery and assembling method | 3 |
| 2 | Method of forming a reusable battery assembly | 2 |
| 3 | Method for forming a reusable battery assembly | 1 |
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 strategy
With only 16 patent families and three known filers, the field is early enough that well-targeted R&D can still establish a meaningful position. The cards below translate the evidence into concrete strategic reads.
Embryonic field — lifecycle stage not yet classifiable
The corpus of 16 patent families and the near-zero filing record prior to 2022 point to a technology area that has not yet reached a classifiable lifecycle stage. Filing activity is episodic and concentrated among very few actors. Teams entering now would face a thin prior-art landscape, which lowers freedom-to-operate risk but also means there are few established design standards to build on.
Early-stageNear-total concentration among three filers
The top five filers hold 100% of the hundred largest filers’ combined total, and the entire known field comprises only three applicants. This level of concentration is typical of domains where a single vertically integrated OEM and one specialist firm have moved earliest. A new entrant with focused IP can quickly become a top-three player by volume in this space.
High concentrationNo co-filing activity detected in current evidence
The collaboration data contains no recorded co-applicant filings, meaning the field has so far developed through unilateral corporate IP strategies rather than joint ventures or research consortia. This is consistent with the embryonic stage and small player count. Any future consortium activity — particularly between automotive OEMs and recycling specialists — would be a significant signal to monitor.
Evidence pendingChina leads filings; U.S. and Europe are secondary hubs
China is the leading jurisdiction with 5 patent records, followed by the United States with 4 and Europe (EPO) with 3. South Korea, Brazil, India, and WIPO (PCT) each hold 1 record. The spread across seven jurisdictions suggests applicants are beginning to build multi-territory protection, though the absolute numbers remain small and the geographic footprint could shift quickly as the field matures.
Multi-jurisdictionGo 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.
Co-filing pairs, ranked by the number of jointly-filed patent families.
Toyota anchors the field; Advanced Battery Concepts LLC enters as a fast-moving challenger
With only three ranked applicants, the competitive map is unusually legible. Toyota Motor Corporation’s early and sustained H01M focus contrasts with Advanced Battery Concepts LLC’s concentrated, recent push into the same IPC space.
Toyota Motor Corporation
Toyota holds 10 patent families — the largest position in the field — concentrated across H01M 10, H01M 4, and H01M 50 subclasses, covering secondary cell chemistry, electrodes, and structural battery components. This breadth indicates recycling IP is being developed in close integration with Toyota’s broader bipolar battery architecture programme rather than as a stand-alone recycling effort.
families: 10Advanced Battery Concepts LLC
Advanced Battery Concepts LLC has entered as a new entrant with 6 patent families, all recent. Its technology focus is similarly centred on H01M 10, with lighter coverage of H01M 4 and H01M 50, suggesting a specialist rather than broad-platform approach. The new-entrant trajectory means its full portfolio impact may not yet be visible due to publication lag.
families: 6| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Advanced Battery Concepts LLC | 6 | ▲ new entrant |
Welding process control and hydrometallurgical recovery are under-served adjacent branches
Two IPC branches sit at the periphery of the current corpus with only 1 patent record each. Their technical adjacency to bipolar cell disassembly and material recovery makes them worth monitoring, though the sparse filing counts alone do not establish commercial opportunity.
B23K · Welding, soldering and brazing
With only 1 patent record, the welding and joining sub-domain is largely unaddressed despite bipolar batteries relying on precision joining techniques that directly affect disassembly feasibility at end of life. Teams with process expertise in laser or ultrasonic disassembly of bipolar stacks could file into this branch with minimal prior-art friction. A realistic entry path would be to couple cell-level recycling claims (H01M) with specific disassembly process claims (B23K), creating a design-for-recycling IP position.
Search this in Eureka →C22B · Metal extraction and refining
Only 1 patent record touches hydrometallurgical or pyrometallurgical recovery of metals from bipolar cells, even though the bipolar architecture — with its distinctive current-collector and electrode materials — likely requires adapted recovery routes compared to conventional lithium-ion cells. This branch is sparse and has plausible technical value if bipolar cells scale commercially. The entry path is clearest for organisations already active in battery-grade metal recovery who could extend existing process claims to bipolar feedstocks.
Search this in Eureka →How Toyota and Advanced Battery Concepts LLC 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 | H01M 50 · Batteries, cells & fuel cells | B09B 101 · Solid waste disposal | B09B 3 · Solid waste disposal |
|---|---|---|---|---|---|
| Toyota Motor Corporation | Strong · 10 | Strong · 8 | Strong · 6 | Emerging · 2 | Emerging · 2 |
| Advanced Battery Concepts LLC | Strong · 6 | Emerging · 1 | Emerging · 1 | Absent | Absent |
| Motors Liquidation Co | Strong · 1 | Strong · 1 | Strong · 1 | Absent | Absent |
Frequently asked questions
The current corpus contains 16 patent families in scope. This is a very small absolute number, confirming the field is at an early stage with limited prior art.
Toyota Motor Corporation leads with 10 patent families, followed by Advanced Battery Concepts LLC with 6 patent families, and Motors Liquidation Co with 1 patent family. These three entities make up the entire ranked applicant pool.
China leads with 5 patent records, followed by the United States with 4 and Europe (EPO) with 3. South Korea, Brazil, India, and WIPO (PCT) each account for 1 record.
Activity was zero from 2017 through 2021, then spiked to 5 filings in 2022, fell to 1 in 2023, and showed 10 in 2025. The 2024 and 2026 periods appear low but are likely affected by publication lag and should not be read as a decline.
The two most under-served adjacent branches are B23K (Welding, soldering and brazing) and C22B (Metal extraction and refining), each with only 1 patent record. Both relate to practical end-of-life disassembly and material recovery processes that bipolar-specific recycling will require at scale.
No co-applicant or joint-filing activity is recorded in the current evidence. All known IP has been filed unilaterally by individual corporate entities.
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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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