公开(公告)号：US20240090974A1

公开(公告)日：2024-03-21

申请号：US18264134

申请日：2022-03-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Bastian P. Kirchner ,  Christian A. Richter ,  Gioacchino Raia ,  Bernhard C. Hofmann ,  Rudolf Schmid

IPC: A61C5/77 ,  A61C9/00 ,  A61C13/00 ,  B33Y50/00 ,  B33Y80/00

CPC classification number: A61C5/77 ,  A61C9/0053 ,  A61C13/0004 ,  A61C13/0019 ,  B33Y50/00 ,  B33Y80/00

Abstract: A method of forming a dental restoration for a tooth having an outer surface includes acquiring a first three-dimensional representation representative of the outer surface of the tooth; generating a design of a first part of the dental restoration based on the first three-dimensional representation of the tooth; forming the first part of the dental restoration; preparing the tooth to form a prepared tooth while forming the first part of the dental restoration; obtaining a second three-dimensional representation of the prepared tooth; generating a design of a second part of the dental restoration based on at least the second three-dimensional representation of the prepared tooth; merging the design of the second part of the dental restoration to the first part of the dental restoration; and forming the second part of the dental restoration.

公开(公告)号：US20230311410A1

公开(公告)日：2023-10-05

申请号：US18024629

申请日：2021-09-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Andreas G. Herrmann ,  Bastian P. Kirchner ,  Gioacchino Raia ,  Daniel D. Oberpertinger ,  Christian A. Richter ,  Anja Friedrich ,  Richard E. Raby ,  Dietmar Blees ,  Ralf M. Paehl ,  Thomas K. Müller

IPC: B29C64/176 ,  B33Y30/00 ,  B29C64/124 ,  B29C64/35 ,  B33Y10/00 ,  B29C64/245 ,  B33Y40/20

CPC classification number: B29C64/176 ,  B29C64/124 ,  B29C64/245 ,  B29C64/35 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

Abstract: The invention relates to a 3D printing system comprising a 3D printing device for manufacturing at least two workpieces. The invention also relates to a method for manufacturing at least two workpieces by means of the 3D printing system. Furthermore, the invention relates to an adapter set for attaching workpiece holders to a 3D printing device.

公开(公告)号：US20220203616A1

公开(公告)日：2022-06-30

申请号：US17593288

申请日：2020-03-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Gioacchino Raia ,  Bastian P. Kirchner ,  Daniel D. Oberpertinger ,  Anja Friedrich ,  Andreas G. Herrmann

IPC: B29C64/245 ,  B29C64/124 ,  B33Y10/00 ,  B33Y30/00

Abstract: 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.

公开(公告)号：US20210146612A1

公开(公告)日：2021-05-20

申请号：US17248456

申请日：2021-01-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Helmar Mayr ,  Gioacchino Raia ,  Bernhard Hofmann ,  Adrian Eckert

IPC: B29C64/135 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/336 ,  B29C64/124 ,  B33Y50/02 ,  B29C64/393

Abstract: An additive manufacturing system has a light permeable base, a build carrier for holding a workpiece and a light source which is arranged to emit light through the light permeable base. The light permeable base and the build carrier are positionable relative to each other in a build dimension in which the workpiece is built up. The system further has a resin vat in which the light permeable base forms a wall portion thereof. The system further comprises a plurality of resin supplies for supplying different light hardenable resins in direct contact with each other in said vat. The system facilitates the rapid manufacturing of a dental restoration having a color gradation.

公开(公告)号：US10932995B2

公开(公告)日：2021-03-02

申请号：US16762170

申请日：2018-11-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Adrian S. Eckert ,  Karsten Dede ,  Christoph H. Thalacker ,  Gioacchino Raia

IPC: A61K6/891 ,  C07C69/007 ,  A61C13/00

Abstract: The invention relates to a dental composition comprising a resin matrix, a filler matrix in an amount of at least 25 wt. % with respect to the weight of the dental composition, an initiator system, the resin matrix comprising polymerizable monomer(s) comprising two (meth)acrylate moieties connected to a brominated resorcinol, catechol, tyrosol, benzoic acid or phenol moiety. The invention relates also to a dental milling block comprising this composition in its hardened stage.

公开(公告)号：US20180361659A1

公开(公告)日：2018-12-20

申请号：US16060046

申请日：2016-12-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Helmar Mayr ,  Gioacchino Raia ,  Bernhard Hofmann ,  Adrian Eckert

IPC: B29C64/135 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: An additive manufacturing system has a light permeable base (2), a build carrier (4) for holding a workpiece (100) and a light source (5) which is arranged to emit light through the light permeable base (2). The light permeable base (2) and the build carrier (4) are positionable relative to each other in a build dimension in which the workpiece (100) is built up. The system further has a resin vat (3) in which the light permeable base (2) forms a wall portion thereof. The system further comprises a plurality of resin supplies (13, 15) for supplying different light hardenable resins in direct contact with each other in said vat (3). The system facilitates the rapid manufacturing of a dental restoration having a color gradation.

公开(公告)号：US11786345B2

公开(公告)日：2023-10-17

申请号：US16764917

申请日：2018-11-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bastian P. Kirchner ,  Gioacchino Raia ,  Anja Friedrich ,  Daniel D. Oberpertinger ,  Malte Korten ,  Andreas G. Herrmann

IPC: A61C13/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y80/00 ,  A61C5/77 ,  B29C64/35 ,  B29C64/129 ,  B33Y40/20

CPC classification number: A61C13/0013 ,  A61C5/77 ,  A61C13/0019 ,  B29C64/129 ,  B29C64/35 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20 ,  B33Y80/00

Abstract: A method of making a physical object by additive manufacturing. The method has the steps of providing a light hardenable primary material (11), building up the object (100) by successively hardening portions of the light hardenable primary material (11) by irradiating the portions with light, coating at least a part of the object (100) with a light permeable coating or oxygen protective material; and irradiating the coated object (100) with light and thereby post-hardening any light hardenable material (11).

公开(公告)号：US11583373B2

公开(公告)日：2023-02-21

申请号：US16327111

申请日：2017-08-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gioacchino Raia ,  Adrian S. Eckert ,  Malte Korten ,  Martin Goetzinger

IPC: B29C35/08 ,  C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  A61C13/00 ,  B33Y70/00 ,  B33Y10/00 ,  B29C64/124 ,  C08K5/00 ,  C08K5/08 ,  B22C9/04 ,  B22C7/02 ,  C08K5/05 ,  C08F222/10 ,  C08K5/3437 ,  C08L35/02 ,  A61C13/20 ,  A61C13/08 ,  A61C7/14 ,  C08F220/28 ,  B33Y70/10 ,  C08F220/20

Abstract: The invention relates to a coloured curable composition for use in an additive manufacturing process, the composition comprising a curable resin composition comprising radiation curable components, a photo initiator, a dye composition comprising a dye D1 and a dye D2, dye D1 having a light absorption maximum within a wave length range from 400 to 530 nm, dye D2 showing a light absorption maximum within a wave length range from 540 to 650 nm. The invention also relates to a 3-dim composite article obtained by processing the curable composition in an additive manufacturing process.

公开(公告)号：US11433658B2

公开(公告)日：2022-09-06

申请号：US16631199

申请日：2018-07-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Anja Friedrich ,  Christian A. Richter ,  Malte Korten ,  Bastian Kirchner ,  Michael Jahns ,  Karin Zanklmaier ,  Gioacchino Raia ,  Hans R. Schnagl ,  Andreas G. Herrmann ,  Daniel D. Oberpertinger

IPC: B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y70/00 ,  B33Y80/00 ,  B29C64/35 ,  B29K105/00 ,  B22F10/40 ,  B22F10/30

Abstract: A method of making a physical object by additive manufacturing. In the method a hardenable primary material is provided, the object is built up by successively hardening layers of the hardenable primary material, and the object is cleaned from excess material by moving the object and thereby generating a mass inertial force in the excess material. The invention facilitates the making of objects by additive manufacturing.

公开(公告)号：US11202694B2

公开(公告)日：2021-12-21

申请号：US15744930

申请日：2016-07-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Helmar B. Mayr ,  Gioacchino Raia ,  Daniel D. Oberpertinger ,  Martin Goetzinger ,  Peter Bissinger

IPC: A61C13/00 ,  B33Y30/00 ,  B29C64/20 ,  B29C64/165

Abstract: A method of making a dental article, has steps of (i) providing a layer of sinter powder, (ii) providing a solidifiable binder to form a circumferential fixation zone (114) which encloses a portion of the powder layer. The method further has the step of repeating steps (i) and (ii) with each fixation zone (114) of one layer being in contact with a fixation zone (114) of an adjacent layer such that a plurality of the fixation zones (114) together form a coherent hollow sleeve (116) extending across the layers. The corresponding plurality of powder portions in combination form a contiguous batch (118) of powder captured in the sleeve. The method facilitates the manufacturing of sintered dental articles.