Aluminum-Lithium Alloy Nanomaterials Patents: Leaders & Gaps 2026
- Filings peaked in 2018 and have not returned to that level, with the 2022 midpoint sitting at roughly half the peak — a flat-to-declining line, not a growing one.
- Two 1990s-era US filings on double-aging still draw the heaviest citation counts, meaning the most-referenced prior art in this space predates the current nanostructuring wave by two decades.
- China leads by receiving-office volume, but the assignee base is fragmented across universities and single-filer entrants rather than concentrated in one corporate portfolio.
Filing growth compares 2021 (1 records) with 2024 (0) — 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.
What this patent set actually covers
This landscape tracks patent families at the intersection of aluminum-lithium alloy composition and nanoscale strengthening mechanisms — nano-precipitates, grain refinement, and nanostructured processing routes — rather than the broader Al-Li alloy literature as a whole. The search string pairs alloy-family terms with nanostructuring vocabulary in the title/claims and abstract, then filters to IPC classes covering alloys, non-ferrous metal treatment, and nano-scale materials (B82Y30). The result is a narrow, technically specific corpus: 17 published records across an eleven-year window.
That narrowness matters for reading the trend line correctly. A field this size moves in single-digit annual counts, so year-to-year swings look dramatic on a chart but represent only one or two filings. The 2018 peak of four and the subsequent decline should be read as evidence of a small, specialist community rather than a market-wide slowdown.
Filing trend and technology composition
Two views of the same 17-family corpus: how filing activity has moved year over year, and which IPC subclasses the claims actually sit in.
A flat-to-declining filing curve since 2018
Filings rose from a single record in 2017 to a peak of four in 2018, then eased back; the 2022 midpoint of two families is roughly half the peak. With 2026 only partially reported and publication lagging filing by around 18 months, the most recent years will fill in somewhat — but the underlying shape is a plateau, not sustained growth.
Concentrated in alloys and metal treatment, with thin coverage elsewhere
C22C (Alloys) and C22F (Non-ferrous metal treatment) between them cover nearly every record in the set, confirming that composition and thermal/mechanical treatment claims are where the real estate is. Rolling, casting, powder metallurgy, sheet-metal working, additive manufacturing and heat treatment each register only one or two records — these are adjacent processing routes that the current filer base has largely left unclaimed.
Shares are the percentage of the 17 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Aluminum-Lithium Alloy Nanomaterials with Eureka
This page is one run against one query. Ask Eureka your own question about aluminum-lithium alloy nanomaterials and every answer comes back with the patent numbers behind it.
Try EurekaThe records other filings build on
Low Cost, Substantially Zr-Free Aluminum-Lithium Alloy for Thin Sheet Product with High Formability
A low cost, substantially Zr-free, low density 2xxx aluminum-lithium alloy is disclosed. The aluminum-lithium alloy can be produced to high formability sheet products capable of being formed into wrought products with a thickness of 0.01″ to 0.249″. Aluminum-lithium alloys of the invention comprise from 3.2 to 4.1 wt.% Cu, 1.0 to 1.8 wt.% Li, 0.8 to 1.2 wt.% Mg, 0.10 to 0.50 wt.% Zn, 0.10 to 1.0 wt.% Mn, up to 0.12 wt.% Si, up to 0.15 wt.% Fe, up to 0.15 wt.% Ti, and up to 0.15 wt.% incidental elements, with Ag not intentionally added.Filed by Kaiser Aluminum Fabricated Products, LLC, published 2019-06-06.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5178695A | Strength enhancement of rapidly solidified aluminum-lithium through double aging | 25 |
| 2 | US5520754A | Spray cast Al-Li alloy composition and method of processing | 17 |
| 3 | US20190233921A1 | Low Cost, Low Density, Substantially Ag-Free and Zn-Free Aluminum-Lithium Plate Alloy for Aerospace Applicati… | 6 |
| 4 | US20190169727A1 | Low Cost, Substantially Zr-Free Aluminum-Lithium Alloy for Thin Sheet Product with High Formability | 6 |
| 5 | WO1993008314A1 | Strength enhancement of rapidly solidified aluminum-lithium through double aging | 4 |
| 6 | CN111621682A | 一种Al-Li系轻质铝合金及其制备方法 | 2 |
| 7 | EP3521467A1 | A low cost, low density, substantially ag-free and zn-free aluminum-lithium plate alloy for aerospace applica… | 2 |
| 8 | CN117845103A | 一种耐蚀铸造铝锂合金及其铸件成型方法 | 1 |
| 9 | CN115109974A | 一种具有超高强度和良好塑性的Al-Cu-Li-Zr-Ce-Sc合金板材及制备方法 | 1 |
Citation counts inside a searched corpus skew toward older filings simply because they have had longer to accumulate references — read this as a signal of foundational influence, not of current commercial relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Publication numbers are shown where the record carries one (9 of 9 rows); clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers say about this field
Three findings that a reader could not get from skimming a single patent — they come from looking at the whole set together.
Activity has cooled since 2018
The corpus peaked at four filings in 2018 and has not matched that since; the 2022 midpoint sits at two. That pattern points to a technology where the core composition space was staked out early and later entrants have had less new ground to claim.
China leads by volume, Europe and the US close behind
China's seven records make it the single largest receiving office, but Europe and the United States together account for nine — meaning filing strategy in this niche is genuinely multi-jurisdictional rather than dominated by one region.
The most influential claims predate the nanostructuring wave
The two most-cited records in this set are 1990s double-aging patents on rapidly solidified Al-Li alloys, cited far more than any filing from the last decade. Newer nanostructuring claims have not yet accumulated comparable citation weight.
No dominant corporate portfolio has emerged
With only one identifiable co-assignee pairing across the whole corpus and recent-year momentum flat at zero across the named assignees, ownership of this niche remains split between individual universities, aerospace suppliers and single-filer entrants.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to aluminum-lithium alloy nanomaterials, with the prior art for and against each one.
Who is filing, and where the room still is
The named assignees span aerospace metals suppliers, defense contractors and Chinese universities, but none show growth in the latest reported year — a sign the field is in a holding pattern rather than an active land-grab.
Kaiser Aluminum Fabricated Products
Holds one of the more detailed compositional claims in the set (the Zr-free, Zn-free thin-sheet alloy family), aimed squarely at aerospace sheet formability rather than nanostructuring per se.
Honeywell International
Appears in the assignee ranking with no recent-year activity recorded, consistent with the broader flat momentum across the corpus.
Chinese university filers
Shanghai Jiao Tong University, Zhengzhou University and Yantai Nanshan University each hold filings, with Shanghai Jiao Tong University forming the corpus's one identified co-assignee pairing with a lithium materials firm. All show zero or declining recent-year activity.
Lockheed Martin Missiles and Space
Present in the assignee set with defense/aerospace-oriented claims, but no filings recorded in the most recent reported year.
| Assignee | Recent year | YoY |
|---|---|---|
| Kaiser Aluminum Fabricated Products, LLC | 0 | — |
| Honeywell International Inc. | 0 | — |
| Shanghai Jiao Tong University | 0 | — |
| Zhengzhou University | 0 | -100% |
| Yantai Nanshan University | 0 | — |
| Lockheed Martin Missiles and Space Company | 0 | — |
| Yichun Ganfeng Lithium Co., Ltd. | 0 | — |
| Ningbo Jinyue New Materials Co., Ltd. | 0 | — |
Where to take this analysis
The dataset points to a narrow, specialist field with a fragmented owner base and several thinly-claimed processing branches. Here is where to look next.
Map the white space in claim language
The under-claimed branches — additive manufacturing, powder metallurgy, casting-route nanoprecipitate control — have only one or two records each. Drafting a first claim there means checking exactly what the existing one or two filings cover before assuming the space is open.
Explore white space in EurekaTrack the 1990s foundational patents' expiry and scope
The two most-cited records in this set date to the early 1990s. Understanding whether their claims have lapsed, and how later filings narrowed around them, matters more here than in most fields given how much citation weight sits with them.
Review citation chains in EurekaWatch for renewed filing tied to aerospace demand cycles
Every named assignee shows flat or negative recent-year momentum. A pickup in aerospace lightweighting programs would be the most likely trigger for new filings from the existing supplier and defense-contractor base.
Set up alerts in EurekaCommon questions about this patent landscape
This landscape identifies 17 published patent families matching a search that pairs aluminum-lithium alloy terminology with nanostructuring vocabulary (nano-precipitate, grain refinement, nanostructured alloy, nanoscale strengthening) and filters to alloy, metal-treatment and nano-scale-materials IPC classes. That is a narrow definition compared to Al-Li alloy patents generally, which number far higher. The true current-year count is understated because publication typically lags filing by around 18 months, so the most recent year in any such search will always look artificially low.
The named assignees include aerospace metals suppliers such as Kaiser Aluminum Fabricated Products, diversified industrials like Honeywell International, defense contractors including Lockheed Martin Missiles and Space, and several Chinese universities such as Shanghai Jiao Tong University and Zhengzhou University. No single assignee holds a dominant multi-family portfolio in this dataset; ownership is fragmented, and every named assignee shows flat or declining filing activity in the most recent reported year. That fragmentation means competitive intelligence work here has to be done firm-by-firm rather than by tracking one clear market leader.
Filings peaked at four in 2018, fell to a midpoint of two by 2022, and current-year figures show no new records — though the latest year is always undercounted due to publication lag. A plausible reading is that the core compositional space (Cu-Li-Mg-Zn alloy systems with nanoscale strengthening) was substantially staked out in the initial wave of filings, leaving later entrants with narrower room to claim. It could equally reflect a small research community that files in bursts tied to specific aerospace or defense programs rather than continuously, so a rebound in later years remains possible.
US20190169727A1, assigned to Kaiser Aluminum Fabricated Products, LLC and published 2019-06-06, claims a low-cost, substantially Zr-free 2xxx aluminum-lithium alloy formulated for high-formability thin sheet product, with defined weight-percent ranges for copper, lithium, magnesium, zinc, manganese and several incidental elements, and with silver not intentionally added. It sits among the more heavily cited recent filings in this dataset. Anyone formulating a similar Cu-Li-Mg-Zn-Mn alloy for sheet applications should check their composition against its stated ranges before finalizing claims.
The IPC breakdown shows heavy concentration in alloy composition (C22C) and non-ferrous metal treatment (C22F), with rolling, casting, powder metallurgy, sheet-metal working, additive manufacturing and general heat treatment each represented by only one or two records. That thin coverage suggests processing-route claims — particularly additive-manufactured Al-Li nanostructures and powder-metallurgy-based grain refinement — are comparatively open relative to composition claims. A freedom-to-operate search focused specifically on those processing IPC classes would confirm how much room actually remains before drafting new claims there.
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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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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.