Multi-Jet Fusion Durability Patents: Niche Leaders, Gaps 2026
- A 20-family dataset with no single dominant filer. the strongest co-filing pair links a glazing-insulation holding company with a window-glass group, not an MJF equipment maker.
- Filing peaked in 2023 at seven records then the pace pulled back, and momentum tables show every tracked assignee at zero in the latest year.
- IPC composition splits across doors/windows hardware, plastics shaping and polymer chemistry rather than concentrating in the additive-manufacturing subclass itself.
A small, technically scattered corpus
Multi-jet fusion (MJF) environmental durability — how printed parts hold up under UV exposure, moisture aging and general weathering — is a narrow slice of the additive manufacturing patent space. Across the tracked window, only 20 patent families match search terms combining MJF with weathering, UV resistance or moisture aging language. That is a small enough corpus that a single co-filing relationship or a single instrument-hardware filer can visibly shift the composition tables.
The technology composition points away from a tight cluster around 3D-printing process claims and toward materials and hardware categories: doors/windows/shutters hardware, plastics shaping, and polymer compound chemistry all appear as often as or more often than the core additive-manufacturing subclass. Publication typically lags filing by around 18 months, so the most recent year in the trend line understates real filing activity.
Filing trend and technology mix
Twenty families, an uneven filing curve, and a technology split that leans on materials chemistry and hardware categories as much as on additive-manufacturing process claims.
Filings rose to a 2023 peak, then went quiet
The trend runs flat through the mid-2010s, climbs to a peak of seven records in 2023, then falls back. With 2022 sitting at just one filing before the 2023 spike, the growth pattern looks more like a short burst tied to a handful of co-filed applications than a sustained build-out. The most recent year is partial and will fill in as later-filed applications publish.
Durability claims sit outside the core AM subclass
E06B (doors, windows and shutters) leads the IPC count at 8 records, ahead of B29C (shaping of plastics) and B33Y (additive manufacturing) at 7 each. Polymer composition and condensation-polymer subclasses (C08L, C08G, C08K) each appear in five or six records, and G10D (stringed and wind instruments) shows up five times — a reminder that some of this corpus is driven by non-AM product categories that happen to reference MJF materials.
Shares are the percentage of the 20 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Multi-Jet Fusion Environmental Durability with Eureka
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Try EurekaWhat the most-cited records actually cover
Integral drum body system for percussion instrument
A drum apparatus with advanced acoustic response is provided. The drum apparatus includes a drum body having a side wall defining a resonant chamber. The side wall can include a plurality of coupling structures disposed about its circumference, as adapted for engaging a drum head across an open end of the drum body, in acoustic communication with the resonant chamber. The drum body side wall and coupling structures can be formed of a substantially continuous material defining an integral structure of the drum body.Filed by Daniel Pawlovich; published 2019-05-23. It is the single most-cited record in this dataset, but its claims are built around drum acoustics, not a generic durability process for MJF parts.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20190156797A1 | Integral drum body system for percussion instrument | 5 |
| 2 | US20200105234A1 | Integral drum body system for percussion instrument | 3 |
| 3 | US10497345B2 | Integral drum body system for percussion instrument | 3 |
| 4 | WO2021173652A1 | Method for improving adhesion in and between layers of additive manufactured articles | 2 |
| 5 | WO2021221624A1 | Three-dimensional printing | 2 |
| 6 | US11189256B2 | Integral drum body system for percussion instrument | 1 |
Citation counts reward older filings and do not indicate current commercial weight — three of the top five citations attach to percussion-instrument hardware, not MJF process or materials claims.
Publication numbers are shown where the record carries one (6 of 6 rows); clicking a row searches Eureka by that number.
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Small datasets reward caution: a handful of records can dominate every ranking. Here is what holds up once that is accounted for.
A single-year spike, not sustained growth
Filings sat at one record in 2022 before jumping to seven in 2023, then falling back. That shape is consistent with a small group of related applications publishing together rather than a broadening field of independent filers.
Hardware categories outweigh the AM subclass
E06B (doors, windows and shutters) has more records than B33Y, the additive-manufacturing subclass itself. Durability claims in this corpus are as often anchored in a finished-product category as in a printing process.
Citation counts favour an unrelated product line
The three most-cited records in this dataset describe percussion-instrument bodies, not MJF process or weathering chemistry. Treat the citation ranking as a signal of age and visibility, not of relevance to durability engineering.
US and PCT dominate, Europe is secondary
The United States receives the most filings, followed by WIPO PCT applications and the EPO. Israel, Australia and Canada each show minimal activity, suggesting durability-specific MJF filing has not yet become a global-filing priority.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to multi-jet fusion environmental durability, with the prior art for and against each one.
Who is filing, and how connected are they
With only four co-assignee pairs in the whole dataset, collaboration is limited to one strong relationship and a couple of related-entity filings around it. No tracked assignee shows filings in the latest year, consistent with the overall pullback after 2023.
A glazing-insulation and window-glass pairing anchors the corpus
The strongest co-assignee relationship in this dataset links a glazing-insulation holding company with a window-glass group, filing together seven times. Two smaller related-entity pairings sit around the same core relationship, which explains why E06B leads the IPC table.
An independent inventor holds the most-cited records
Daniel Pawlovich's drum-body filings account for the three most-cited records in the dataset despite sitting outside the core durability-materials claim space, showing how a niche, well-drafted filing can dominate citation rankings in a small corpus.
Established AM and materials names show no recent activity
Named assignees with AM or materials-industry ties — including a contract manufacturer and a computing-hardware group — register zero filings in the most recent tracked year, matching the broader flat-to-declining trend after the 2023 peak.
| Assignee | Recent year | YoY |
|---|---|---|
| Interpane Glas Industrie Holding AG | 0 | — |
| Pilkington Group Limited | 0 | — |
| Jabil Inc. | 0 | — |
| PAWLOVICH DANIEL | 0 | — |
| Hewlett-Packard Development Company, L.P. | 0 | — |
| PILKINGTON NEDERLAND BV | 0 | — |
| PILKINGTON HLDG GMBH | 0 | — |
Where to take this analysis
This landscape flags a thin, mixed-purpose corpus rather than a mature filing field. The next steps depend on whether the goal is freedom-to-operate or first-mover filing.
Check freedom-to-operate against the glazing pairing
The strongest co-assignee relationship concentrates seven filings around door, window and shutter hardware. Anyone building weatherable MJF housings for building products should map claims against that pairing specifically, not against the AM subclass generally.
Explore the assignee network in EurekaDraft into the identified white space
UV-stabiliser loading, post-print moisture barriers and accelerated weathering protocols for MJF parts show thin dedicated coverage. A claim anchored in one of these specific mechanisms, rather than generic durability language, has more room to stand.
Run a white-space search in EurekaWatch for the 2026 filing lag to resolve
The most recent year is partial because publication trails filing by roughly 18 months. Re-run this landscape in a future update to see whether the post-2023 pullback holds or whether 2025-2026 filings arrive once they publish.
Set a monitoring alert in EurekaCommon questions about this landscape
This dataset identifies 20 patent families matching search terms that combine multi-jet fusion (or MJF) with weathering durability, UV resistance or moisture aging language. That is a small corpus by additive-manufacturing standards, and it spans several IPC subclasses rather than concentrating in one. Anyone using this figure should treat it as a scoped search result, not a count of every patent that touches MJF durability in any form.
No single company dominates this corpus. The strongest relationship is a co-filing link between a glazing-insulation holding company and a window-glass group, accounting for the largest co-assignee pairing in the dataset. Beyond that pairing, filings are spread across an independent inventor, a contract manufacturer and a computing-hardware group, none of which show activity in the most recent tracked year.
The E06B subclass (doors, windows and shutters) has more records in this dataset than B33Y, the dedicated additive-manufacturing subclass. That happens because the strongest filer relationship in this corpus is a glazing and window-glass pairing whose durability claims are framed around finished building products rather than the printing process. It is a reminder that IPC composition reflects who is filing, not just what the technology is.
Not entirely. Three of the five most-cited records describe an integral drum body for a percussion instrument, filed by an independent inventor, and they lead the citation table despite sitting outside core durability-materials claims. Citation counts in a small, searched corpus tend to favour older, well-drafted filings regardless of subject match, so they should be read as a visibility signal rather than a relevance ranking.
Based on the technology composition and claim density in this dataset, dedicated coverage looks thin for UV-stabiliser additive loading in powder-bed materials, post-print moisture-barrier coatings, accelerated weathering test protocols specific to MJF parts, and long-term creep behaviour under humidity cycling. A claim built around one of these specific mechanisms is more likely to clear prior art than a broadly worded durability claim.
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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.