公开(公告)号：US12214546B2

公开(公告)日：2025-02-04

申请号：US17436754

申请日：2020-03-09

Applicant: NORTHWESTERN UNIVERSITY

Inventor： David A. Walker ,  James L. Hedrick, III ,  Chad A. Mirkin

IPC: B29C64/129 ,  B29C64/307 ,  B29C64/357 ,  B29C64/364 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: Methods and apparatus comprising a dewetting material and a polymerization liquid that are immiscible and dewetting, and can be used for the formation of three-dimensional objects, wherein the method does not require a dead zone. Additionally, methods and apparatus that employ the use of a flowing dewetting material to provide a shearing interface to reduce interfacial adhesive forces.

公开(公告)号：US20240391162A1

公开(公告)日：2024-11-28

申请号：US18792428

申请日：2024-08-01

Applicant: Align Technology, Inc.

Inventor： Mehdi Mojdeh ,  Michael Christopher Cole ,  Peter Dorfinger ,  Shiva P. Sambu

IPC: B29C64/118 ,  B29C64/188 ,  B29C64/209 ,  B29C64/232 ,  B29C64/245 ,  B29C64/264 ,  B29C64/295 ,  B29C64/307 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y80/00

Abstract: A 3D printer comprises a platform, a dispenser, and a light source. The dispenser comprises a nozzle to extrude photo-curable material onto the platform to form a first layer according to one or more digital files. The first shape of the one or more extruded photo-curable materials corresponds to a first minimum line width that is based on a diameter of the nozzle. The light source is to emit a light beam directed onto the first layer according to the one or more digital files to cure a portion of the first layer. A first cured layer of the one or more photo-curable materials corresponds to a second shape of a first layer of a 3D printed orthodontic aligner specified by the one or more digital files. The second shape has a second minimum line width that is smaller than the first minimum line width.

公开(公告)号：US20240293969A1

公开(公告)日：2024-09-05

申请号：US18656813

申请日：2024-05-07

Applicant: Velo3D, Inc.

Inventor： Benyamin BULLER ,  Thomas Blasius BREZOCZKY ,  Yacov ELGAR ,  James FRECHMAN ,  Alan Rick LAPPEN

IPC: B29C64/35 ,  B01D45/16 ,  B01D46/00 ,  B01D46/10 ,  B01D50/20 ,  B04C9/00 ,  B22F3/00 ,  B22F10/28 ,  B22F10/366 ,  B22F10/73 ,  B22F12/30 ,  B22F12/41 ,  B22F12/43 ,  B22F12/53 ,  B22F12/70 ,  B22F12/90 ,  B28B1/00 ,  B28B13/02 ,  B29C31/08 ,  B29C64/135 ,  B29C64/153 ,  B29C64/176 ,  B29C64/188 ,  B29C64/245 ,  B29C64/25 ,  B29C64/255 ,  B29C64/307 ,  B29C64/321 ,  B29C64/357 ,  B29C64/364 ,  B29C64/371 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y40/10 ,  B33Y40/20 ,  B33Y50/02

CPC classification number: B29C64/35 ,  B01D46/0002 ,  B04C9/00 ,  B22F10/73 ,  B22F12/30 ,  B22F12/70 ,  B22F12/90 ,  B28B1/001 ,  B28B13/02 ,  B29C31/085 ,  B29C64/135 ,  B29C64/153 ,  B29C64/176 ,  B29C64/188 ,  B29C64/245 ,  B29C64/25 ,  B29C64/255 ,  B29C64/307 ,  B29C64/321 ,  B29C64/357 ,  B29C64/364 ,  B29C64/371 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y40/20 ,  B01D45/16 ,  B01D46/0053 ,  B01D46/10 ,  B01D50/20 ,  B04C2009/002 ,  B22F3/005 ,  B22F10/28 ,  B22F10/366 ,  B22F12/41 ,  B22F12/43 ,  B22F12/53 ,  B22F2201/00 ,  B22F2999/00 ,  B33Y40/10 ,  B33Y50/02 ,  Y02P10/25

Abstract: The present disclosure provides three-dimensional (3D) printing systems, apparatuses, software, and methods for the production of at least one requested 3D object. The 3D printer includes a material conveyance system, filtering system, and unpacking station. The material conveyance system may transport pre-transformed material against gravity. The 3D printing described herein comprises facilitating non-interrupted material dispensing through a component of the 3D printer, such as a layer dispenser.

公开(公告)号：US12007687B2

公开(公告)日：2024-06-11

申请号：US18324452

申请日：2023-05-26

Applicant: THE BRIGHAM AND WOMEN'S HOSPITAL, INC. ,  PRESIDENT AND FELLOWS OF HARVARD COLLEGE

Inventor： Yu Shrike Zhang ,  Ali Khademhosseini

IPC: B29C64/00 ,  B22F10/00 ,  B22F10/85 ,  B22F12/00 ,  B22F12/82 ,  B29C64/10 ,  B29C64/106 ,  B29C64/176 ,  B29C64/182 ,  B29C64/20 ,  B29C64/205 ,  B29C64/227 ,  B29C64/245 ,  B29C64/25 ,  B29C64/255 ,  B29C64/30 ,  B29C64/307 ,  B29C64/386 ,  B29C64/393 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y40/10 ,  B33Y40/20 ,  B33Y50/00 ,  B33Y50/02 ,  B33Y70/00 ,  B33Y80/00 ,  B33Y99/00 ,  G03F7/00

CPC classification number: G03F7/001 ,  B22F10/00 ,  B22F10/85 ,  B22F12/00 ,  B22F12/82 ,  B29C64/00 ,  B29C64/10 ,  B29C64/106 ,  B29C64/176 ,  B29C64/182 ,  B29C64/20 ,  B29C64/205 ,  B29C64/227 ,  B29C64/245 ,  B29C64/25 ,  B29C64/255 ,  B29C64/30 ,  B29C64/307 ,  B29C64/386 ,  B29C64/393 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y40/10 ,  B33Y40/20 ,  B33Y50/00 ,  B33Y50/02 ,  B33Y70/00 ,  B33Y80/00 ,  B33Y99/00 ,  G03F7/00

Abstract: Described are systems and methods for multi-material printing. The systems and methods can utilize a stereolithographic printing device, a moving stage, and a microfluidic device. The microfluidic device can include a plurality of reservoirs, each reservoir housing a different ink for printing, and a microfluidic chip. The microfluidic chip can include a chamber that comprises a plurality of inlets, a printing region, and one or more outlets as well as an elastic membrane.

公开(公告)号：US20240157643A1

公开(公告)日：2024-05-16

申请号：US18236114

申请日：2023-08-21

Applicant: General Electric Company

Inventor： John Sterle ,  Vadim Bromberg

IPC: B29C64/307 ,  B29C64/214

CPC classification number: B29C64/307 ,  B29C64/214 ,  B33Y30/00

Abstract: A build material escapement assembly for an additive manufacturing system includes a retaining plate for coupling the build material escapement assembly to the additive manufacturing system. A base having a plurality of ports is disposed beneath the retaining plate, and a support frame is disposed within the base. A diaphragm is disposed around the base, and a retractable plate is disposed between the support frame and the diaphragm. A top plate is further coupled to the retractable plate through the diaphragm and a plurality of connectors are coupled to the plurality of ports of the base. The base, support frame, diaphragm, retractable plate, and top plate define a cavity, and the top plate is movable between a retracted position by applying a negative pressure and an extended position by applying positive pressure to the cavity via the plurality of connectors.

公开(公告)号：US20240025112A1

公开(公告)日：2024-01-25

申请号：US18320427

申请日：2023-05-19

Applicant: Massivit 3D Printing Technologies Ltd.

Inventor： Shai Hirsch

IPC: B29C64/165 ,  B29C64/307 ,  B29C70/38 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B29C64/165 ,  B29C64/307 ,  B29C70/388 ,  B33Y10/00 ,  B33Y30/00

Abstract: A method and apparatus is disclosed for manufacturing a composite material object from composite material tapes. The apparatus includes a tape delivery unit storing and providing a plurality of fabric tape material spools, compaction or take-up mechanisms, an inline tape impregnation system and curing radiation sources. The apparatus contains compaction and resistance rollers, both connected to a robotic arm. The apparatus is operative to place compacted fabric tapes on top of each other to form a desired composite material object while traveling in a predetermined path using the robotic arm. The tape placement and compaction is executed without using a mandrel or mold.

公开(公告)号：US20230405932A1

公开(公告)日：2023-12-21

申请号：US18453794

申请日：2023-08-22

Applicant: Stratasys Powder Production Ltd.

Inventor： Frederik TJELLESEN ,  Anders HARTMANN ,  Alexander RASMUSSEN

IPC: B29C64/307 ,  B29C64/214 ,  B29C64/314 ,  B29C64/321 ,  B29C64/357 ,  B29C64/153 ,  B29C64/245 ,  B29C64/255 ,  B29C64/295 ,  B33Y40/00 ,  B22F10/73 ,  B22F12/50

CPC classification number: B29C64/307 ,  B29C64/214 ,  B29C64/314 ,  B29C64/321 ,  B29C64/357 ,  B29C64/153 ,  B29C64/245 ,  B29C64/255 ,  B29C64/295 ,  B33Y40/00 ,  B22F10/73 ,  B22F12/50 ,  B33Y30/00

Abstract: A method for recirculating powder in an apparatus for manufacturing a three-dimensional object from the powder. The powder recirculation method includes: providing powder in a powder repository, the powder being one of fresh powder, excess powder or a blend thereof; transferring the powder from the repository to a work surface; distributing the powder across a build surface and resulting in a portion of the powder defining excess powder; returning the excess powder back to the repository; monitoring the amount of powder in the repository relative to a predetermined amount of powder; and delivering fresh powder from a powder tank to the repository when the amount of powder in the repository is less than the predetermined amount and not delivering fresh powder when excess powder is being returned to repository and the amount of powder in the repository is greater than the predetermined amount of powder.

公开(公告)号：US20230364861A1

公开(公告)日：2023-11-16

申请号：US18136910

申请日：2023-04-20

Applicant: Velo3D, Inc.

Inventor： Benyamin Buller ,  Thomas Blasius Brezoczky ,  Alan Rick Lappen ,  Erel Milshtein ,  Rueben Joseph Mendelsberg ,  Daniel Christiansen

IPC: B29C64/307 ,  B29C64/357 ,  B29C64/386 ,  B33Y70/00 ,  B23K26/08 ,  B23K26/144 ,  B29C64/40 ,  B29C64/214 ,  B23K26/342 ,  B33Y10/00 ,  B29C64/35 ,  B23K26/14 ,  B23K26/04 ,  B33Y30/00 ,  B23K37/06 ,  B23K26/142 ,  B22F10/28 ,  G05B19/4099 ,  B23K26/70 ,  B29B17/00 ,  B29C64/153 ,  B33Y40/20 ,  B33Y40/00 ,  B29C64/188 ,  B29C64/393 ,  B33Y50/02 ,  B29K105/00 ,  B22F10/47 ,  B28B1/00 ,  B33Y80/00 ,  B22F10/36 ,  B22F10/73 ,  B22F10/68 ,  B22F12/70

CPC classification number: B29C64/307 ,  B29C64/357 ,  B29C64/386 ,  B33Y70/00 ,  B23K26/0869 ,  B23K26/144 ,  B29C64/40 ,  B29C64/214 ,  B23K26/342 ,  B33Y10/00 ,  B29C64/35 ,  B23K26/1462 ,  B23K26/04 ,  B33Y30/00 ,  B23K37/06 ,  B23K26/142 ,  B22F10/28 ,  G05B19/4099 ,  B23K26/702 ,  B29B17/0005 ,  B29C64/153 ,  B33Y40/20 ,  B33Y40/00 ,  B29C64/188 ,  B29C64/393 ,  B33Y50/02 ,  Y02P90/02 ,  B29K2105/251 ,  B22F10/47 ,  G05B2219/35134 ,  B28B1/001 ,  B33Y80/00 ,  B22F10/36 ,  B22F10/73 ,  B22F10/68 ,  B22F2998/10 ,  G05B2219/49007 ,  Y02P10/25 ,  B22F12/70

Abstract: The present disclosure various apparatuses, and systems for 3D printing. The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software and systems for a step and repeat energy irradiation process; controlling material characteristics and/or deformation of the 3D object; reducing deformation in a printed 3D object; and planarizing a material bed.

公开(公告)号：US20230359117A1

公开(公告)日：2023-11-09

申请号：US18324452

申请日：2023-05-26

Applicant: THE BRIGHAM AND WOMEN'S HOSPITAL, INC.

Inventor： Yu Shrike Zhang ,  Ali Khademhosseini

IPC: G03F7/00 ,  B33Y80/00 ,  B29C64/106 ,  B33Y70/00 ,  B29C64/00 ,  B29C64/205 ,  B29C64/386 ,  B33Y40/20 ,  B29C64/176 ,  B33Y10/00 ,  B33Y40/10 ,  B29C64/245 ,  B29C64/25 ,  B33Y50/00 ,  B29C64/40 ,  B22F12/00 ,  B29C64/393 ,  B29C64/227 ,  B33Y40/00 ,  B22F10/00 ,  B29C64/255 ,  B33Y50/02 ,  B22F10/85 ,  B29C64/20 ,  B29C64/10 ,  B33Y30/00 ,  B29C64/30 ,  B29C64/307 ,  B33Y99/00 ,  B29C64/182 ,  B22F12/82

CPC classification number: G03F7/001 ,  B33Y80/00 ,  B29C64/106 ,  B33Y70/00 ,  B29C64/00 ,  G03F7/00 ,  B29C64/205 ,  B29C64/386 ,  B33Y40/20 ,  B29C64/176 ,  B33Y10/00 ,  B33Y40/10 ,  B29C64/245 ,  B29C64/25 ,  B33Y50/00 ,  B29C64/40 ,  B22F12/00 ,  B29C64/393 ,  B29C64/227 ,  B33Y40/00 ,  B22F10/00 ,  B29C64/255 ,  B33Y50/02 ,  B22F10/85 ,  B29C64/20 ,  B29C64/10 ,  B33Y30/00 ,  B29C64/30 ,  B29C64/307 ,  B33Y99/00 ,  B29C64/182 ,  B22F12/82

Abstract: Described are systems and methods for multi-material printing. The systems and methods can utilize a stereolithographic printing device, a moving stage, and a microfluidic device. The microfluidic device can include a plurality of reservoirs, each reservoir housing a different ink for printing, and a microfluidic chip. The microfluidic chip can include a chamber that comprises a plurality of inlets, a printing region, and one or more outlets as well as an elastic membrane.

公开(公告)号：US11781101B2

公开(公告)日：2023-10-10

申请号：US16674815

申请日：2019-11-05

Applicant: Regents of the University of Minnesota

Inventor： Angela Panoskaltsis-Mortari ,  Michael C. McAlpine ,  Fanben Meng

IPC: B29C64/00 ,  C12M1/12 ,  C12N5/00 ,  A61K9/48 ,  B33Y30/00 ,  C12N5/071 ,  B33Y99/00 ,  B22F12/00 ,  B29C64/255 ,  B29C64/386 ,  B33Y40/00 ,  B22F12/82 ,  B29C64/40 ,  B29C64/182 ,  B33Y50/02 ,  B29C64/20 ,  B29C64/227 ,  B33Y40/10 ,  B29C64/25 ,  B22F10/85 ,  B29C64/205 ,  B29C64/393 ,  B29C64/10 ,  B33Y50/00 ,  B29C64/30 ,  B29C64/245 ,  B29C64/176 ,  B29C64/307 ,  B33Y40/20 ,  B33Y10/00 ,  B22F10/00 ,  G01N33/483 ,  B33Y80/00 ,  B33Y70/00

CPC classification number: C12M25/14 ,  A61K9/4825 ,  A61K9/4833 ,  A61K9/4866 ,  B22F10/00 ,  B22F10/85 ,  B22F12/00 ,  B22F12/82 ,  B29C64/00 ,  B29C64/10 ,  B29C64/176 ,  B29C64/182 ,  B29C64/20 ,  B29C64/205 ,  B29C64/227 ,  B29C64/245 ,  B29C64/25 ,  B29C64/255 ,  B29C64/30 ,  B29C64/307 ,  B29C64/386 ,  B29C64/393 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y40/10 ,  B33Y40/20 ,  B33Y50/00 ,  B33Y50/02 ,  B33Y99/00 ,  C12N5/0068 ,  C12N5/0691 ,  B33Y70/00 ,  B33Y80/00 ,  G01N33/4833

Abstract: A 3D-printed in vitro model biological microenvironment in examples discussed below may have one or more of the following features: (a) a gel matrix 3D-printed scaffold, wherein the gel matrix comprises a chemical composition configured to culture a first type of live cells, (b) a target chemical disposed at one or more locations within the gel matrix, the target chemical forming a chemical depot from which a chemical gradient is created within the gel matrix, (c) a conduit disposed within the gel matrix and defining a lumen comprising a second type of live cells, wherein the conduit is configured to enable at least some of the first type of live cells to migrate through the conduit and facilitate flow of at least: some of the live cells to an outlet of the conduit, or enable introduction of at least one of other cells, Achemical mediators, or drugs into the 3D-printed microenvironment.