High Pressure Die Casting Alloys Patents: Leaders & Trends 2026
- 44.4% concentration. The top 5 assignees hold 142 of 320 records in scope — a leader with 39 filings sits well ahead of a fifth-place holder at 17.
- Filing pulled back after 2020. The field peaked at 17 records in 2020 and fell 62% from 2021 (13) to 2024 (5), the last year with complete publication data.
- Alloy composition dominates. C22C alloy claims appear in 73.8% of the 320 records, more than double the share of metal-casting process claims (B22D, 41.3%).
Filing growth compares 2021 (13 records) with 2024 (5) — 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 320 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
High pressure die casting alloys sit at the intersection of two claim traditions: alloy composition (silicon, iron, magnesium and trace-element ratios) and process control (heat-treatment-free routes, hot-tearing resistance, recycled-content tolerance). This landscape draws on 320 published records filed between 2015 and 2026 that combine die casting alloy language with functional targets such as iron tolerance, elongation and alloy cost. Publication lags filing by roughly 18 months, so the most recent one to two years in any trend understate actual filing activity.
The dataset is built to isolate structural, heat-treatment-free casting alloys aimed at large automotive body components rather than general aluminium metallurgy, which keeps the corpus focused on the claims that matter for gigacasting and megacasting programmes.
Filing trends and technology composition
Two views of the same 320-record corpus: how filing activity has moved year over year, and which IPC subclasses carry the claim density.
Filing trend, 2017-2026
Filings rose to a peak of 17 records in 2020, then declined; 2021's 13 records fell to 5 by 2024, a 62% drop over that span. 2025 and 2026 figures are still filling in due to publication lag and should not be read as a continued decline.
Technology composition by IPC subclass
C22C (alloys) appears in 73.8% of the 320 records and B22D (metal casting) in 41.3%, confirming that composition claims outweigh process claims in this field. Because records can carry multiple IPC codes, these shares sum to well over 100% and should be read against the 320-record total, not against each other.
Shares are the percentage of the 320 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on High Pressure Die Casting Alloys with Eureka
This page is one run against one query. Ask Eureka your own question about high pressure die casting alloys and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a representative recent filing
Aluminum alloy for high pressure die casting of ultra-large vehicle body structures (US20240191326A1)
Filed by GM Global Technology Operations and published 2024-06-13, this record claims an aluminium alloy for high pressure die casting of ultra-large body structures, specifying tight ranges for silicon, iron, copper, magnesium and trace elements (strontium, cerium, boron) along with an as-cast yield strength target above 130 MPa.Notable for combining a heat-treatment-free process claim with element-level tolerance windows aimed specifically at gigacasting-scale body structures.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20120232685A1 | Systems and methods for computationally developing manufacturable and durable cast components | 127 |
| 2 | US20120000578A1 | Cast aluminum alloys | 117 |
| 3 | US5363556A | Water jet mixing tubes used in water jet cutting devices and method of preparation thereof | 110 |
| 4 | WO1996010099A1 | High strength aluminum casting alloys for structural applications | 107 |
| 5 | US6139651A | Magnesium alloy for high temperature applications | 67 |
| 6 | US20030000608A1 | Magnesium alloy and heat treatment method thereof | 38 |
| 7 | US20150315688A1 | Cast aluminum alloy components | 36 |
| 8 | US20110175484A1 | Methods of manufacturing induction rotors with conductor bars having high conductivity and rotors made thereby | 36 |
| 9 | WO2014121384A1 | Metal matrix composite and method of forming | 31 |
| 10 | US8758529B2 | Cast aluminum alloys | 26 |
Citation counts favour older records simply because they have had longer to accumulate citations within the searched corpus; treat them as a signal of influence, not of current commercial relevance.
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 patterns stand out once concentration, timing and technology composition are read together.
Filing is concentrated but not closed
The top 5 assignees combine for 142 of the 320 records in scope, led by a single assignee at 39 filings against a fifth-place holder at 17. That gap between first and fifth suggests one dominant filer rather than a tight cluster of equals, leaving room for a well-differentiated composition claim to stand out.
Activity has cooled from its 2020 peak
Filings peaked at 17 records in 2020 and fell from 13 in 2021 to 5 in 2024, the last year with complete publication data. That drop likely reflects a maturing composition-claim space rather than a shrinking market, since the underlying automotive lightweighting demand has not reversed.
Composition claims outweigh process claims
C22C (alloys) covers 73.8% of the 320 records versus 41.3% for B22D (metal casting) and 25.6% for C22F (non-ferrous treatment). Dense composition-claim coverage means new element-ratio claims need to differentiate tightly on ranges rather than broad chemistry.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to high pressure die casting alloys, with the prior art for and against each one.
Who is filing, and where momentum has stalled
The ranked leaders span automakers, alloy specialists and universities, but recent-year momentum has gone quiet across the board.
A single filer well ahead of the field
The top-ranked assignee holds 39 records against 17 for the fifth-place holder, a gap wide enough to indicate a sustained composition-claim programme rather than a one-off filing burst.
Recent-year activity has gone flat
Several of the most active historical filers, including the leading automaker and specialist alloy producers, show zero filings in the latest year, with one recording a -100% year-on-year change. This is consistent with the broader 2021-2024 pullback rather than a signal these players have exited the space.
Co-filing is limited but concentrated
Only 10 co-assignee pairs appear in the corpus, with the strongest pairing filing 15 records together and a second pairing at 12. This points to a small number of durable alloy-development partnerships rather than a broad collaboration network.
| Assignee | Recent year | YoY |
|---|---|---|
| GM Global Technology Operations LLC | 0 | — |
| Dead Sea Magnesium | 0 | — |
| Brunel University | 0 | — |
| Cast Centre Pty Ltd | 0 | — |
| Rheinfelden Alloys GmbH & Co KG | 0 | — |
| Alotech Ltd LLC | 0 | -100% |
| Magontec | 0 | — |
| McMaster University | 0 | -100% |
Where to take this next
The landscape points to specific next steps depending on whether the goal is freedom-to-operate, sourcing or strategic monitoring.
Check freedom-to-operate on element ranges
With 73.8% of records carrying C22C composition claims, a new alloy needs its silicon, iron and trace-element ranges checked against the densest prior art before filing.
Run a claim check in EurekaTrack the leader's recent filings
The top assignee's 39-record programme and its zero latest-year filings are worth monitoring for a resumption or pivot in claim strategy.
Set up assignee tracking in EurekaExplore the under-claimed branches
Recycled-content tolerance and hot-tearing resistance show thinner coverage than core composition claims, making them candidates for a differentiated first filing.
Explore white space in EurekaCommon questions about this landscape
The ranked leader in this 320-record dataset holds 39 records, well ahead of the fifth-place assignee at 17. The top 5 assignees combine for 142 records, or 44.4% of all records in scope, which shows a genuinely concentrated field rather than one with dozens of equally active filers. That said, 78 companies appear in the ranking, so there is a long tail beyond the leading group worth checking for specific claim overlaps.
Filings peaked at 17 records in 2020, then fell from 13 in 2021 to 5 in 2024, a 62% decline over that span, and 2024 is the last year with complete publication data. Figures for 2025 and 2026 are still incomplete because publication typically lags filing by about 18 months, so they should not be read as evidence of continued decline. The honest read is that the field cooled from a 2020 peak, not that it has stopped.
Alloy composition claims under IPC class C22C appear in 73.8% of the 320 records, making it the dominant claim category by a wide margin. Metal casting process claims (B22D) follow at 41.3%, and non-ferrous metal treatment (C22F) at 25.6%. Because a single record can carry multiple IPC codes, these percentages are each measured against the full 320-record total and are not meant to sum to 100%.
Relative to the dense coverage in core aluminium composition and casting-process claims, branches such as recycled-content tolerance, heat-treatment-free elongation targets and hot-tearing resistant compositions carry comparatively thin representation in this corpus. These are technically specific enough to support a differentiated first claim rather than a broad chemistry claim, which is already crowded. Confirming this requires a targeted search against the exact IPC subclasses and claim language before committing to a filing strategy.
US20240191326A1, filed by GM Global Technology Operations and published in mid-2024, claims an aluminium alloy for high pressure die casting of ultra-large body structures with specific element ranges for silicon, iron, copper, magnesium and trace additions, plus an as-cast yield strength target above 130 MPa. Anyone developing a similar heat-treatment-free structural casting alloy for large body components needs to check their composition ranges against this filing's specific windows. It does not block alloys outside its claimed element ranges or aimed at smaller, non-structural components.
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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.