Apparatus with a module for the layered manufacture of a product

This patent covers a system for layered (additive) manufacture of three-dimensional products from powder, specifically the selective laser melting (SLM) class of metal powder-bed processes. In plain English, claim 1 describes the physical machine architecture: a build chamber, a vertically movable build platform, a powder dispenser that travels back and forth over the build surface along a defined dispensing direction, at least one overflow tank with an opening onto the build surface for removing excess powder, and a powder reservoir feeding the layer-deposition process. Successive powder layers are scanned by an energy beam (e.g., a laser) to melt them in whole or part, then solidify or sinter them into contiguous interconnected layers. The novelty implied by the title and claim emphasis is the modular handling of powder flow — dispenser, reservoir, and overflow tank arranged around the build surface — rather than the laser-melting physics itself, which is well established.

The patent is assigned to 3D Systems Inc, naming five inventors (Verheyen, Valkenborgs, Cuyt, Van Vaerenbergh, and Schillebeeckx). It was granted in 2022. The patent family is 6 members across 3 countries, indicating focused rather than aggressive international prosecution — protection in a small set of key jurisdictions rather than a broad global filing program. It currently carries 0 forward citations. For a 2022 grant in a mature, heavily cross-cited field, zero citations is unremarkable: it reflects recency (citing applications publish on a lag) and the incremental, hardware-configuration nature of the claim, not lack of relevance. This is the kind of strategic IP that citation-weighted ranking systematically under-rewards in its early years.

Where this patent stands: This is a niche hardware-refinement filing rather than a foundational anchor. The core SLM concept — powder bed, energy beam, layer-by-layer fusion — predates this patent by two decades (see the 2003–2004 university filings below), so the contribution here is in the powder-management module: dispenser motion, reservoir, and overflow handling. As a 3D Systems asset, it plugs into one of the largest commercial portfolios in additive manufacturing and most likely supports a specific metal-printing platform or powder-recoating subsystem rather than standing alone. Relative to the field's main players, 3D Systems sits among the established commercial leaders (alongside Arcam/GE, Renishaw, and Velo3D), and this patent reads as a portfolio-deepening continuation in machine engineering.

The surrounding space is tightly clustered and clearly dominated by a handful of commercial machine builders. Arcam AB leads the citation chart with 11 patents and 430 citations, and is by far the most prolific player in the nearest-patent set (eight of the twenty nearest patents are Arcam filings). 3D Systems itself ranks sixth (4 patents, 218 citations) and Renishaw seventh (4 patents, 204 citations), with single high-impact entries from Howmedica Osteonics, the University of Texas System, and Fraunhofer. The technology concentration confirms how narrow this field is: Metal Powder Processing (B22F) runs at 295.4× the corpus baseline and 3D Printing (B33Y) at 217.1× — extreme clustering that signals a dense, well-mapped patent thicket around powder-bed metal AM hardware.

The closest related patents are dominated by the recoating/powder-handling and apparatus lineage:

• US-2016193696-A1 — Apparatus and methods for building objects by selective solidification of powder material (Renishaw PLC · 157 citations · 11-member family). The most heavily cited near-neighbor; a broad apparatus filing on selective powder solidification that frames the machine-architecture space this patent operates within.
• US-9505057-B2 — Powder distribution in additive manufacturing of three-dimensional articles (Arcam AB · 53 citations · 10-member family). Directly on-point to the subject's powder-dispenser/distribution claim element, addressing how powder is laid across the build surface.
• US-10850326-B2 — Additive manufacturing apparatus and method (Renishaw PLC · 8 citations · 15-member family). A recent Renishaw apparatus filing with a large family; closely related machine-level subject matter and an example of strategic IP the citation-weighted score under-rewards given its recency.
• US-6676892-B2 — Direct selective laser sintering of metals (Board of Regents University of Texas System · 354 citations · 6-member family). The foundational academic anchor for direct laser sintering/melting of metal powders; everything in this cluster, including the subject patent, builds downstream of this lineage.

Note that Arcam dominates the nearest patents — eight of the twenty closest — and also tops the citation chart, so here the most-cited player and the most-present player coincide; Renishaw is the second clear force. The field is not academically dominated (most top assignees are commercial machine makers), so freedom-to-operate against the Arcam/Renishaw/3D Systems hardware portfolios is the practical concern rather than university licensing — though the early University of Texas and National University of Singapore patents (US-6676892, US-6621039) underline that the foundational sintering science originated in academia.