3m Innovative Properties Company

Solventum Intellectual Properties Company

Malte Korten

Helmar B Mayr

Gioacchino Raia

Bastian P Kirchner

Andreas G Herrmann

Adrian S Eckert

Anja Friedrich

Michael Jahns

Christian A Richter

Carsten Franke

Bernhard Hofmann

Holger Hauptmann

Reinhold Hecht

Brant Ulrick Kolb

Klaus Hintzer

Marc Peuker

Gallus Schechner

Negus B Adefris

Brian D Goers

Robert L W Smithson

Thomas J Anderson

Brian A Shukla

Maiken Givot

Rainer A Guggenberger

Joachim Zech

Martin Goetzinger

Ralf M Paehl

Rudolf Schmid

Andreas Johannes Boehm

Robin Edgar Wright

Peter Bissinger

Richard E Raby

Christoph H Thalacker

Karsten Dede

Michael C Dadalas

Henning Hoffmann

Mark J Hendrickson

Wolfgang Weinmann

Kathleen M Humpal

Peter U Osswald

Hendrik M Grupp

Rainer K Dittmann

Sebastian Guggenmos

Bernd Gangnus

Stefan K Welker

Anja B Fischer

Guenter M Zilligen

Daniel D Oberpertinger

Elizaveta Y Plotnikov

Michael C Harper

Dietmar Blees

Hans R Schnagl

Jeffrey N Bartow

Till Meurer

Oliver Kappler

Paul D Pennington

Andreas M Geldmacher

Christine M Andres

Gareth A Hughes

Fee Zentis

Per Miles Nelson

Korbinian Gerlach

Sebastian F Zehentmaier

Melissa A Lackey

Thomas K Müller

Gabriele H Gottschalk-Gaudig

Benjamin C MacMurray

Robert Leland Wee Smithson

Wolfgang Neumann

Kyle C Picha

Michaela Urban

Josef A Waizenegger

Philipp Jürgen Semmler

Leif J Erickson

Eric H Tsai

Kathleen M Humpa

Jesse J Gilles

Matthew T Lingscheit

Nicholas S Wren

Karin Zanklmaier

Andreas Syrek

Hendrick Grupp

Markus Von Hoegen

Rainer Dittmann

Hendrik Grupp

Thomas K MÜLLER

Philipp Semmler

Bhaskar V Velmakanni

The invention relates to a 3d-printed dental restoration precursor, a 3d-printed array comprising a 3d-printed dental restoration precursor, a kit of parts comprising at least two 3d-printed dental restoration precursors or 3d-printed dental restorations and a process of producing such a 3d-printed array, 3d-printed dental restoration precursor or 3d-printed dental restorations. The 3d-printed dental restoration precursor comprises at least one crown unit having an outer surface and an inner surface and at least one support element having a fixation section. The support element is connected through the fixation section to the outer surface of the crown unit in a particular region.

3D-printed dental restoration precursor with support element and process of production

A 3D printing system is disclosed, comprising a 3D printing device with a build plate and at least two workpiece holders, each having a manufacturing surface for additive manufacturing. The system includes an adapter with recesses for receiving portions of the workpiece holders, allowing the workpiece holders to be releasably attached to the build plate. The system also integrates post-processing devices controlled by a handling robot and a controller to streamline the manufacturing process, ensuring high precision and efficiency. Additionally, the disclosed technology covers a method for manufacturing at least two workpieces using the 3D printing system, which includes steps for hardening layers of material and removing workpieces post-production. Furthermore, the system includes an adapter set for attaching workpiece holders to the 3D printing device, enabling efficient transitions between different manufacturing stages and enhancing overall productivity.

3D printing system and method for manufacturing workpieces and adapter set for attaching workpiece holders to a 3D printing device

The present disclosure provides apparatuses and methods for manufacturing three-dimensional objects. Each additive manufacturing apparatus () includes: a) a reservoir () for receiving hardenable material; b) a first movable light engine () providing a first light radiation configuration; a second light engine () providing a second light radiation configuration that is different than the first light radiation configuration; and d) a light altering structure (). The light altering structure is located between the reservoir and light radiated from at least one of the first movable light engine or the second light engine. The first movable light engine is configured to radiate light onto a first focal plane () within the reservoir containing the hardenable material and the second light engine is configured to radiate light onto a second focal plane () within the reservoir containing the hardenable material. The method includes: a) obtaining a hardenable material disposed in a reservoir; b) selectively radiating light having a first light radiation configuration from a first movable light engine; and c) selectively radiating light having a second light radiation configuration from a second light engine onto a second focal plane within the hardenable material. The apparatuses and methods can advantageously form objects having different resolutions on demand using the same apparatus, plus optionally can blend light from multiple light engines.

Additive manufacturing apparatus including two light engines and a light altering structure and a method of additive manufacturing a three-dimensional object

A method of building up at least a first () and a second () physical workpiece from a light hardenable material () on a 3D printing device (). The method has the steps of providing to the 3D printing device a first dataset for building up a first workpiece; starting a first print job based on the first dataset; providing to the same 3D printing device a second dataset for building up a second workpiece after the start the first print job; and starting a second print job based on the second dataset before finishing the first print job.

Method of time-shifted and time-overlapping building up physical workpieces by additive manufacturing

The present disclosure provides methods including obtaining an insert comprising a sieve defining openings each having a diameter of 10 to 200 micrometers; placing a volume of a fluid containing a photopolymerizable composition and a contaminant in the insert; and subjecting the volume of the fluid to a centrifugal force to separate the contaminant from at least a portion of the photopolymerizable composition by retaining the contaminant in the insert and passing at least a portion the photopolymerizable composition through the sieve of the insert to provide a separated photopolymerizable composition. Systems are also provided, including an additive manufacturing apparatus, a centrifuge, and an insert configured to be inserted into the centrifuge. The methods and systems can advantageously assist in reclaiming photopolymerizable composition that has been contaminated, for reuse.

Methods and systems for processing photopolymerizable compositions

The invention relates to A curable composition for producing dental composite crowns, the composition comprising a resin matrix comprising polymerizable (meth)acrylate(s) not comprising a urethane moiety, polymerizable urethane(meth)acrylate(s), wherein the polymerizable (meth)acrylate(s) not comprising an urethane moiety are used in excess over the polymerizable urethane(meth)acrylate(s), a filler matrix comprising nanocluster(s), fumed silica in an amount below 8 wt. % with respect to the weight of the whole composition, an initiator system comprising photoinitiator(s), organic dye(s), the curable composition not comprising softener in an amount of more than 5 wt. % with respect to the weight of the whole composition, the curable composition having a viscosity below 150 Pa*s at 23° C. and a shear rate of 1 s. The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method.

Curable composition for producing a dental composite crown and process of production

The present disclosure provides a build platform for use in an additive manufacturing device that is builds up an object from layers of a light-hardenable resin, wherein the build platform comprises a build surface for building up the object thereon, and wherein the build surface comprises a ceramic material. The disclosure also provides a method of making a build surface comprises a ceramic surface. Further, the disclosure provides additive manufacturing devices that include build platforms comprising ceramic material. The disclosure also describes articles made using the methods and devices described.

Build platform for use in an additive manufacturing device

A method of building up a physical object by additive manufacturing which has the steps of building up the object and at least one support structure layer by layer along a build axis. The support structure supports the object relative to a build platform. During building up the object and the at least one support structure a connection is provided between the support structure and the object by a plurality of layers each of which being a common layer of the object and the support structure.

Method of building up a physical object by additive manufacturing

A device () for spinning a 3D printed workpiece (). The device has a rotor () for spinning about a spinning axis (A) and a receptacle () for holding the workpiece (). The receptacle () is pivotally attached to the rotor () for swiveling about a swivel axis (B) that is transverse to the spinning axis (A). The pivotal attachment enables swiveling of the receptacle () between a first angular orientation relative to the spinning axis (A) and a different second angular orientation relative to the spinning axis (A). The device () further has a balancing weight () that is movably arranged relative to the receptacle (). The balancing weight () is lockable at different distances relative to the receptacle ().

Device for spinning a workpiece

A system having at least one dental blank and an associated shade guide. The dental blank exhibits a non-uniform color shading, and the shade guide comprises a plurality of shade specimens each exhibiting a particular color shading representing the same color shading present in a partial area within the dental blank. A method of making a dental restoration includes the use of the system. The invention facilitates making a dental restoration having a color shading resembling the color shading of a natural tooth.

System of a dental blank and an associated shade guide

A method of making a physical object by additive manufacturing. The method has the steps of providing a light hardenable primary material (), building up the object () by successively hardening portions of the light hardenable primary material () by irradiating the portions with light, coating at least a part of the object () with a light permeable coating or oxygen protective material; and irradiating the coated object () with light and thereby post-hardening any light hardenable material ().

Method of making a physical object

A system () for washing a 3D-printed object (). The system () has a washing device () and a workpiece () that includes the 3D-printed object (). The washing device () has a container () that forms a process chamber () for receiving a liquid cleaning agent (), and the container () has an inlet () into the process chamber (). The workpiece () further has a support structure () that supports the 3D-printed object () and a base () supporting the support structure (). The base (), in a mating relationship with the inlet (), forms a restraint preventing the workpiece () from passing through the inlet () in a situation in which the workpiece () is placed with the 3D-printed object () located within the process chamber ().

System for washing a 3D-printed object

The invention relates to A curable composition for producing dental composite crowns, the composition comprising a resin matrix comprising polymerizable (meth)acrylate(s) not comprising a urethane moiety, polymerizable urethane(meth)acrylate(s), wherein the polymerizable (meth)acrylate(s) not comprising an urethane moiety are used in excess over the polymerizable urethane(meth)acrylate(s), a filler matrix comprising nanocluster(s), fumed silica in an amount below 8 wt. % with respect to the weight of the whole composition, an initiator system comprising photoinitiator(s), organic dye(s), the curable composition not comprising softener in an amount of more than 5 wt. % with respect to the weight of the whole composition, the curable composition having a viscosity below 150 Pa*s at 23&#xb0; C. and a shear rate of 1 s. The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method.

A method of forming a vitreous bond abrasive article is presented that includes receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying a plurality of layers of a vitreous bond abrasive article precursor. The vitreous bond abrasive article precursor includes abrasive particles bonded together by a vitreous bond precursor material and an organic compound. The vitreous bond abrasive article precursor further comprises at least one of: at least one tortuous cooling channel extending at least partially through the vitreous bond abrasive article precursor or at least one arcuate cooling channel extending at least partially through the vitreous bond abrasive article precursor. The method also includes generating, with the manufacturing device by an additive manufacturing process, the vitreous bond abrasive article precursor based on the digital object.

Vitreous bonded abrasive articles and methods of manufacture thereof

The invention relates to a radiation curable composition for additive-manufacturing processes, the composition comprising (meth)acrylate component(s) not comprising an urethane moiety having a molecular weight Mw of at least 1,000 as Component A1, photo initiator as Component B, red, yellow or orange dye or combination thereof as Component C, blue dye having a light absorption band in the range of 350 to 420 nm as Component D, and optionally stabilizer as Component E. The invention further relates to a process of producing an elastomeric 3-dim article from the radiation curable composition in an additive-manufacturing process and the obtained elastomeric 3-dim article.

Radiation curable composition for additive manufacturing processes

Growing community of inventors

Moorenweis, Germany

Malte Korten