Stereolithographic Shaping From Liquid Precursor Patents (Class 264/401)
  • Patent number: 11549012
    Abstract: Modeling material formulations and formulation systems usable in additive manufacturing of a three-dimensional object, featuring, when hardened, a Shore A hardness lower than 10 and/or a Shore 00 hardness lower than 40, are provided. Additive manufacturing processes utilizing these formulations and formulation systems, and three-dimensional objects obtainable thereby, are also provided.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: January 10, 2023
    Assignee: Stratasys Ltd.
    Inventors: Mazi Amiel-Levy, Shiran Lupo, Tal Ely, Daniel Dikovsky
  • Patent number: 11548224
    Abstract: The present invention concerns a reservoir assembly for use in three-dimensional (3D) printing for building a 3D object, which includes a top frame that may be filled with liquid material, and a tensioned film being held underneath the top frame. The tensioned film may be air permeable and elastic at the same time, wherein surfaces of the tensioned film are micro textured so that the tensioned film becomes optically clear when it contacts with the liquid material. The tensioned film minimizes the creation of bubbles between the top and bottom surfaces. This also helps blurring the boundaries thereby enhancing the surface finish of the fabricated parts.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: January 10, 2023
    Assignee: SprintRay, Inc.
    Inventors: Amir Mansouri, Huijian Tian, Jing Zhang, Abdol Hossein Bassir
  • Patent number: 11548232
    Abstract: A fabrication method involving the use of additive material fabrication methods to create a shell representative of a desired part, the additive material shell being used in one or more molding fabrication methods in which a second material is provided into a cavity of the shell.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: January 10, 2023
    Assignee: Element 7, LLC
    Inventor: Mark Jaster
  • Patent number: 11541595
    Abstract: Embodiments related to systems and methods of forming structures on substrates (e.g., flexible substrates, fabrics, textiles, leathers) are disclosed. In some embodiments, a method of forming a structure on a substrate is provided. The method may involve submerging at least one surface of the substrate into a resin bath. The method may include patterning electromagnetic radiation through a window onto one or more regions of the substrate to polymerize the resin onto the one or more regions of the substrate. An alternative method may involve covering a surface of the substrate with a layer of polymeric powder. The alternative method may include directing electromagnetic radiation toward one or more regions on the surface of the substrate to heat the polymeric powder to form a layer on the surface of the substrate. A method of depositing an ultraviolet (UV)-curable material onto a substrate by a valve jetting process is also provided.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: January 3, 2023
    Assignee: Kornit Digital Technologies Ltd.
    Inventor: Travis Alexander Busbee
  • Patent number: 11534959
    Abstract: A method for manufacturing a part includes fabricating an object in an additive fabrication stage, the object including a solid mold forming a cavity in the shape of a part with uncured or incompletely cured build material disposed therein. The build material in the cavity is cured in a curing stage that occurs at least partially after the additive fabrication stage. The build material undergoes a phase change mechanism occurring during the additive fabrication stage and a distinct polymerization mechanism occurring during the curing stage and at least partly after the additive fabrication stage of the object and cures the build material by a polymerization process.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: December 27, 2022
    Assignee: Inkbit, LLC
    Inventors: Scott Twiddy, Richard Woudenberg
  • Patent number: 11534271
    Abstract: A computer-implemented method and system of determining a material surface from a volumetric density file includes generating a density frequency distribution of a volumetric density file of a dental impression and determining an iso-value of density between air and a particular material in the density frequency distribution. A computer-implemented method and system of creating a digital model from a CT scan of a physical dental impression includes selecting an iso-value of density for a digital volumetric density file having one or more voxels, generating one or more digital surface points in virtual 3D space for each of one or more voxels, and selecting a subset of digital surface points from the one or more digital surface points. A computer-implemented method and system of optimizing a digital surface includes moving one or more digital surface points to satisfy a criteria of optimum digital surface selection.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: December 27, 2022
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: Sergey Nikolskiy, Fedor Chelnokov
  • Patent number: 11537104
    Abstract: Parameters of a set of tools are stored on a storage device. The tools are part of a manufacturing assembly usable for removing one or more support structures from a part. The support structures are formed with the part to facilitate additive manufacturing of the part. A near-net shape is modeled which includes the part combined with the support structures. A process plan is developed that includes subtractive manufacturing operations by the manufacturing assembly that remove the support structures. The process plan repeatedly updates the near-net shape as each one of the support structures is incrementally removed.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: December 27, 2022
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Saigopal Nelaturi, Morad Behandish
  • Patent number: 11529700
    Abstract: Embodiments of systems and methods for dicing a bonded structure are provided. A method includes the following operations. First, a scan pattern can be determined for forming a series of ablation structures in the bonded structure. Relative positions between the series of ablation structures and a bonding interface of the bonded structure can then be determined. The bonding surface may be between a first wafer and a second wafer. At least one of one or more focal planes or a depth of focus of a laser beam may be determined based on the relative positions between the series of ablation structures and the bonding interface. Further, the laser beam may be determined. The laser beam has a series of pulsed lasers. Further, the laser beam may be moved in the bonded structure according to the scan pattern to form the series of ablation structures in the bonded structure.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: December 20, 2022
    Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
    Inventors: Feiyan Wang, Xianbin Wang, Yongwei Li
  • Patent number: 11529672
    Abstract: A method of forming a cast component and a method of forming a casting mold is described herein. The ceramic core-shell mold includes at least first core portion, a first shell portion, and at least one first cavity between the core portion and the first shell portion. The core-shell mold may be manufactured using an additive manufacturing process and may include an integrated ceramic filter. At least a portion of the ceramic core-shell mold and the wax gate component is coated with a second ceramic material. The wax gate component is then removed to form a second cavity in fluid communication with the first cavity.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: December 20, 2022
    Assignee: General Electric Company
    Inventors: Xi Yang, Michael Cole, Michael Brown, Gregory Terrence Garay, Tingfan Pang, Brian David Przeslawski, Douglas Gerard Konitzer
  • Patent number: 11518099
    Abstract: The invention relates to an apparatus for producing an object by means of additive manufacturing, comprising a process chamber for receiving a bath of material which can be solidified by exposure to electromagnetic radiation; a support for positioning the object in relation to the surface level of the bath of material; and a solidifying device for solidifying a selective layer-part of the material on the surface level by means of electromagnetic radiation. Furthermore optical control device is provided with a focus unit in an optical pathway of the electromagnetic radiation of the solidifying device, and arranged for controlling at least the focus of the electromagnetic radiation emitted by the solidifying device on the surface level. According to the invention, the optical control device comprises a sensor element arranged for detecting a measure for the accuracy of the focus of the electromagnetic radiation and a focus correction lens element that is arranged to be movable.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: December 6, 2022
    Assignee: ADDITIVE INDUSTRIES B.V.
    Inventors: Mark Herman Else Vaes, Steef Willem Denteneer, Erwin Wijn
  • Patent number: 11507055
    Abstract: The invention relates to a plausibility checking method for rapid prototyping devices, in particular for stereolithography devices. In this connection, input data (14) is checked which is present particularly in the form of graphics data and of which every file renders a layer. Every layer comprises a plurality of pixels. The component to be printed in the respective layer is produced based on output data by the rapid prototyping device. The input data of two consecutive layers is checked and the sum of all pixels to be exposed is determined for every layer. A signal (22) is output in particular as a warning signal (26) when the pixel sum of a following layer is larger than in the previous layer by a predetermined factor.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: November 22, 2022
    Assignee: Ivoclar Vivadent AG
    Inventors: Jörg Ebert, Michael Brotzge
  • Patent number: 11504915
    Abstract: Methods, systems, and storage media for controlling a fast-moving path of a printer nozzle. In some embodiments, a method for controlling fast movement of a printer nozzle includes the following steps. (1) Obtaining a start position and an end position. The start position is a position of a fast-moving start point of the printer nozzle, and the end position is a position of a fast-moving end point of the printer nozzle. (2) Determining an optimal fast-moving path on a horizontal plane corresponding to a slice of a print target according to the start position and the end position, so that a length of the fast-moving path outside a polygon in the slice is the shortest. (3) Controlling the printer nozzle to move relative to a base of the printer according to the optimal fast-moving path on the horizontal plane.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: November 22, 2022
    Assignee: Shanghai Fusion Tech Co., Ltd.
    Inventors: Jinjing Zhang, Jianzhe Li, Hua Feng
  • Patent number: 11491705
    Abstract: In a metal fiber composite (MFC) additive manufacturing (AM) method, a layer of polymer structures is deposited using a fused filament fabrication (FFF) printer assembly comprising at least one nozzle. Subsequently, an MFC printer assembly is used to embed a continuous metal fiber into one or more of the polymer structures of the layer. The embedding is achieved by heating the metal fiber and applying pressure to the metal fiber using an embedding surface of the MFC printer assembly. The heated metal fiber melts polymer adjacent thereto, thereby allowing the pressure to embed the metal fiber into the polymer structure. Using the MFC-AM method, various composite structures can be formed, such as novel heat exchangers that may otherwise be difficult or impossible to fabricate via other manufacturing techniques.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: November 8, 2022
    Assignee: UNIVERSITY OF MARYLAND, COLLEGE PARK
    Inventors: David M. Hymas, Serguei V. Dessiatoun, Michael M. Ohadi
  • Patent number: 11484411
    Abstract: The invention relates to a joint implant for new tissue formation at a joint, the joint implant (1) comprising a pinlike body having a bottom region (11), a top region (12) and a shell region (13), wherein at least the top region (12), of the joint implant (1) has a hydrophobic surface for promoting chondroblastic differentiation of mesenchymal stem cells.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: November 1, 2022
    Inventor: Christoph Karl
  • Patent number: 11485073
    Abstract: Methods for creating an aircraft turbomachine vane using additive manufacturing include additively manufacturing a vane on a bed of powder using selective laser melting, the additive manufacturing being performed on a support plate so that first or second circumferential edges are manufactured first directly on the support plate, at least one temporary support member being produced simultaneously with the first or second edges. The methods also include removing the temporary support member by breaking its connection with the leading or trailing edge with a tool that is engaged in at least one recess thereof.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: November 1, 2022
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventor: Mickaël Voiron
  • Patent number: 11485056
    Abstract: A method for preventing detachment of a three-dimensional object from a printing tray of a printing apparatus is disclosed. The method includes printing a carpet of building material below and around the base of a three-dimensional object to be printed; and printing said three-dimensional object. The portions of the carpet that protrude out of the boundaries of the base of the three-dimensional object are coated with one or more layers of support material to help keep the carpet flexible and adhesive in texture.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: November 1, 2022
    Assignee: STRATASYS LTD.
    Inventor: Eduardo Napadensky
  • Patent number: 11478990
    Abstract: The present invention provides a multi-material 3D object printing method and a print control apparatus. The multi-material 3D object printing method includes: a. randomly generating at least one group of area print data based on each group of area information of a target object, then correspondingly generating layer print data according to multiple groups of area information of each layer of the target object, and forming the multiple groups of layer print data into 3D object print data; b. performing layer-by-layer printing based on the 3D object print data; and c. stacking layer-by-layer printing products from the step b to form a 3D object. As disclosed, a texture of a 3D object generated by means of printing is homogeneous, thereby expanding the application scope of manufacturing a 3D object by using an inkjet printing technology, and implementing smooth transition between materials in different areas of a same 3D object.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: October 25, 2022
    Assignee: ZHUHAI SAILNER 3D TECHNOLOGY CO., LTD.
    Inventors: Wei Jiang, Wei Chen, Xiaokun Chen, Yi Zhou
  • Patent number: 11472904
    Abstract: Provided herein is a method of making a clear or translucent object by additive manufacturing, comprising (a) providing a clear or translucent light polymerizable resin, the resin comprising: (i) light-polymerizable monomers, prepolymers, or a combination thereof; (ii) a photoinitiator; and (iii) a polysubstituted linear polyacene ultraviolet light absorbing compound which compound is polysubstituted with bromo, chloro, —Se—R?, —S—R? or combinations thereof, where each R? is independently selected from alkyl, aryl, and arylalkyl; and then (b) producing by stereolithography with ultraviolet light a clear or translucent object from said light polymerizable resin.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: October 18, 2022
    Assignee: Carbon, Inc.
    Inventors: Gregory R. Robbins, Steven Kenneth Pollack
  • Patent number: 11474052
    Abstract: Systems and methods for real time, nondestructive inspection of an object being formed by additive manufacturing is provided. The disclosed systems and methods can be used with any additive manufacturing system and can detect defects introduced during fabrication. In operation, additive manufacturing of the object can be paused and the object rotated within the build chamber. An x-ray pulse can then be directed through a linear aperture towards the object being formed inside the build chamber. A linear x-ray detector array can detect the x-ray pulse and an x-ray image of the object being formed can be created. By rotating the object being formed during exposure to the x-ray pulse at least one half of one full rotation, the entire volume of the object can be inspected.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: October 18, 2022
    Assignee: THE BOEING COMPANY
    Inventor: Morteza Safai
  • Patent number: 11472105
    Abstract: Embodiments for 3D printing an object by a processor are described. An object is selected to be printed by a 3D printer. The 3D printer includes a structure. The structure is modified based on the selected object. The selected object is 3D printed by the 3D printer. At least a portion of the selected object is supported by the modified structure while the selected object is being 3D printed by the 3D printer.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: October 18, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Christopher J. Hardee, Sarbajit K. Rakshit
  • Patent number: 11466121
    Abstract: Provided herein according to aspects of the present invention are resins that: (a) are suitable for use in additive manufacturing techniques such as bottom-up and top-down stereolithography, (b) produce objects that are bioresorbable, and (c) produce objects that are flexible or elastic (preferably at at least typical room temperatures of 25° C., and in some embodiments at typical human body temperatures of 37° C.). Such resins may include: (a) a bioresorbable polyester oligomer having reactive end groups; (b) non-reactive diluent; (c) optionally reactive diluent; and (d) a photoinitiator.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: October 11, 2022
    Assignee: Carbon, Inc.
    Inventors: Xinyu Gu, Sharon Chen, Gina Michelle Policastro, Peyton Hopson, Jackie Donners, Michael Vendely, Jason L. Harris
  • Patent number: 11458573
    Abstract: Methods and systems for generative manufacturing of a three-dimensional component from a powder, wherein a layer structure model of the component to be manufactured is divided into a core region and a shell region adjacent to the core region, and wherein the shell region forms at least a portion of the surface of the three-dimensional component. Then, a layer-based irradiation process is performed in which a density of irradiated powder layers is lower in the shell region than in the core region.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: October 4, 2022
    Assignee: TRUMPF Laser- und Systemtechnik GmbH
    Inventors: Dominik Maurer, Roland Spiegelhalder
  • Patent number: 11458686
    Abstract: A calibration method serves for calibrating a manufacturing device for additively producing a three-dimensional object by applying layer by layer and selectively solidifying a building material. The manufacturing device comprises at least two scanning units, each of which is capable of directing a beam to different target points in the working plane, which are located within a scanning region assigned to the respective scanning unit, wherein the scanning regions region of the at least two scanning units overlap in an overlap area. At least a first of the at least two scanning units is assigned a first monitoring unit whose monitoring region extends to a target point of the first scanning unit and its proximity, wherein a change of a position of the monitoring region is carried out as a function of a change of a position of the target point.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: October 4, 2022
    Assignee: EOS GmbH Electro Optical Systems
    Inventors: Michael Prexler, Martin Schade
  • Patent number: 11458672
    Abstract: The present invention is directed to a method and a device for building a shaped body by stereolithographic solidification of building material by photopolymerization.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: October 4, 2022
    Assignee: Ivoclar Vivadent AG
    Inventors: Hendrik John, Rebecca Russ
  • Patent number: 11458540
    Abstract: The present invention relates to a method for the production of a three-dimensional object (2) by way of layered solidification of a powder construction material (11) by way of electromagnetic radiation, in particular laser radiation, having the steps: scanning points, which correspond to a cross section of the object (2) to be produced, of an applied layer of the powder construction material (11) with an electromagnetic beam (22) from a radiation source (21) for purposes of selectively solidifying the powder construction material (11), conducting a gas flow (33) across the applied layer during the scanning with the electromagnetic beam (22) and performing an irregularity determination with regard to the presence of a process irregularity with regard to at least one process parameter during the production, wherein during the scanning by way of the electromagnetic beam (22), the scanning process at least one present point of the cross section to be solidified is interrupted on the basis of a result of the irre
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: October 4, 2022
    Assignee: EOS GmbH Electro Optical Systems
    Inventor: Robert Achim Domrose
  • Patent number: 11458685
    Abstract: A three-dimensional printing system for fabricating a three-dimensional article includes a resin vessel, a motorized platform, an imaging bar, a movement mechanism, a servicing module, and a controller. The motorized platform has an upper surface for supporting the three-dimensional article. The imaging bar has an array of light emitters arranged along a transverse axis which emitting light downwardly from an exit surface. The controller is configured to: operate the motorized build plate, the movement mechanism, and the imaging module to complete fabrication, and periodically during fabrication operate the movement mechanism to position the imaging bar in the servicing module to clean resin residue from the imaging bar.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: October 4, 2022
    Assignee: 3D Systems, Inc.
    Inventor: Robert W. Beauchamp
  • Patent number: 11453162
    Abstract: A system treats uneven surfaces of additive manufactured objects to improve the transparency and glossiness of the surfaces. The system operates an actuator to dip the additive manufactured object into a bath of fluid material that is the same as the material used to form the uneven surface to smooth the surface of the object and operates a sprayer to apply another fluid material to a surface of the object that is identified as being rougher based on the object's geometric data. A heater is provided to dry non-UV curable material applied to the object and a source of UV radiation is provided to cure UV curable material applied to the object.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: September 27, 2022
    Assignee: Xerox Corporation
    Inventors: Ron E. Dufort, Linn C. Hoover, Erwin Ruiz, Mandakini Kanungo
  • Patent number: 11453164
    Abstract: Systems and methods that prevent oxygen inhibition of a light-initiated polymerization reaction by forcing the oxygen away from the reaction surfaces. In some embodiments, oxygen is purged by bringing a planarizing surface (e.g., a thin transparent film and/or a transparent planar surface) into contact with a layer of UV curable material disposed on a workpiece and then moving the planarizing surface away from the workpiece once the UV material is cured.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: September 27, 2022
    Assignee: IO Tech Group Ltd.
    Inventors: Michael Zenou, Ziv Gilan, Daniel Liptz, Yuval Shai
  • Patent number: 11446861
    Abstract: A method for producing a three-dimensional object comprising computing a sequence of back-projections describing the three-dimensional object to be formed from different orientation angles of the object, defining a sequence of patterns of light using the back-projections, and irradiating with each of the patterns of light at the respective corresponding orientation angle. According to the defined sequence, a photoresponsive material is capable of altering its material phase, upon irradiation by light, thereby creating a three-dimensional distribution of alterations within the photoresponsive medium which physically reproduces the three-dimensional object, thereby creating the three-dimensional object.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: September 20, 2022
    Assignee: Ecole PolyTechnique Federale de Lausanne (EPFL)
    Inventors: Damien Loterie, Paul Delrot, Christophe Moser
  • Patent number: 11440243
    Abstract: Devices, systems, methods and computer program products are disclosed that facilitate part layer curing by an additive manufacturing device wherein each element of the part layer is exposed to light from a light source until the element receives sufficient energy to cure. In an aspect, received energy is calculated based on both the light received directly from the light source and light received from surrounding elements due to dispersion and other effects. The present disclosure enables consistent curing across a part layer, facilitate the creation of sharp outer structures, and allow fragile structures to be built alongside larger structures without a loss of quality, clarity, or resolution.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: September 13, 2022
    Assignee: B9CREATIONS, LLC
    Inventor: Michael Joyce
  • Patent number: 11440099
    Abstract: Processes and systems that include one or more laser beam sources configured to provide laser irradiation with one or more laser pulse groups to at least a portion of powder particles on a solid surface at one or multiple locations thereof. Sintering laser pulse(s) is provided to induce coalition of at least some of the powder particles into a more continuous medium, and pressing laser pulse(s) is provided to produce pressure pulse(s) on at least a portion of the powder particles and/or the more continuous medium. Laser pulse groups may include one or more of the sintering laser pulses followed by one or more of the pressing laser pulses with a time delay between a last of the sintering laser pulse(s) and a first of the pressing laser pulse(s).
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: September 13, 2022
    Assignee: Purdue Research Foundation
    Inventor: Benxin Wu
  • Patent number: 11440223
    Abstract: An apparatus useful for rapidly producing at least one object having a contoured surface portion from a light-polymerizable resin is provided.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: September 13, 2022
    Assignee: Carbon, Inc.
    Inventors: Matthew Panzer, John R. Tumbleston
  • Patent number: 11426945
    Abstract: A three-dimensional (3D) printing methodology is disclosed for freeform fabrication of hydrophobic structures without the use of printed support structures. The build material is directly printed in and supported by a fumed silica-containing yield-stress support bath to form an intermediate article in the support bath material. The intermediate article may be liquid or only partially solidified after being printed into the support bath material. The intermediate article is then heated or irradiated with ultraviolet radiation to initiate cross-linking to solidify the printed intermediate article, forming a finished article.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: August 30, 2022
    Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INCORPORATED
    Inventors: Yong Huang, Yifei Jin, Nevada J. Gellermann, Kaidong Song
  • Patent number: 11420393
    Abstract: The strength of a bond between two adjacent layers of a three-dimensional print is weakened by initiating fabrication of a top layer at a height greater than the processing height for the print. This technique may be used in particular at the interface between a raft or other support and an object being fabricated, after which the printing process may return to a regular process height for additional layers used to fabricate the remainder of the object.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: August 23, 2022
    Assignee: MakerBot Industries, LLC
    Inventors: Joseph Sadusk, Filipp Gelman
  • Patent number: 11422459
    Abstract: A data generation method generates data for controlling an arrangement step in an imprint process that includes the arrangement step of arranging an imprint material on a substrate, a contact step of bringing the imprint material and a pattern portion of a mold into contact with each other, and a curing step of curing the imprint material. The method includes performing a first step of determining a plurality of first positions, based on information related to a boundary of the pattern portion in the substrate, as positions where the imprint material is to be arranged, and performing a second step of determining, after the first step, a plurality of second positions different from the plurality of first positions, as positions where the imprint material is to be further arranged.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: August 23, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Masayoshi Fujimoto
  • Patent number: 11400643
    Abstract: A system for additively manufacturing a structure is disclosed. The system may include a support, and a print head operatively connected to and moveable by the support. The print head may have an outlet that is oriented at an oblique angle relative to a central axis of the print head.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: August 2, 2022
    Assignee: Continuous Composites Inc.
    Inventors: Stephen Tyler Wilson, Ryan C. Stockett
  • Patent number: 11396136
    Abstract: The present teachings according to various embodiments provides a support material for 3D printing. The support material includes poly(alkylene carbonate) having a decomposition temperature of from 100° C. to about 300° C.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: July 26, 2022
    Assignee: Xerox Corporation
    Inventors: Carolyn P. Moorlag, Nan-Xing Hu, Valerie M. Farrugia
  • Patent number: 11390029
    Abstract: A three-dimensional shaping apparatus coupled to a server includes a melting portion melting a material to form a shaping material, an ejection portion ejecting the shaping material supplied from the melting portion, a shaping stage where the shaping material ejected from the ejection portion is stacked, a moving mechanism changing a relative position of the ejection portion and the shaping stage, a shape data generation portion generating second shape data for representing a shape of a three-dimensional shaped article including a shape representing identification information for identifying the three-dimensional shaped article using first shape data and the identification information for identifying the three-dimensional shaped article, a controller controlling the melting portion and the moving mechanism according to the second shape data, thereby producing the three-dimensional shaped article, and a communication portion transmitting the identification information for identifying the three-dimensional shap
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: July 19, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Eizo Takahashi, Tsuyoshi Kitahara
  • Patent number: 11380057
    Abstract: The present disclosure is directed to a software tool that facilitates the presentation of a three-dimensional view of a construction project as well as the generation of various types of two-dimensional technical drawings based on this three-dimensional view. In one implementation, the software tool causes a computing device to engage in the following operations. The computing device may receive an indication of a desired clip height of a three-dimensional view at which to generate a two-dimensional technical drawing; identify a subset of meshes that intersect with a two-dimensional plane at the desired clip height; determine respective portions of each mesh that intersect the two-dimensional plane at the desired clip height; compile a dataset that defines the two-dimensional drawing; and render the two-dimensional drawing using the compiled dataset.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: July 5, 2022
    Assignee: Procore Technologies, Inc.
    Inventors: Winson Chu, Peter Wu, Christopher Myers
  • Patent number: 11376786
    Abstract: Provided herein is an apparatus for producing three-dimensional objects by additive manufacturing, which may include: (a) optionally a window permeable to an inhibitor of polymerization; (b) a window mount to which the window is secured when the window is present; (c) optionally a carrier platform on which the three-dimensional object can be produced; (d) a carrier platform mount operatively associated with the window mount; (e) a drive assembly operatively associated with the window mount and the carrier platform mount; (f) a light source operatively associated with the window mount operatively associated with a patterning array; (g) an inhibitor of polymerization supply configured for operative association with the feed surface when present; and (h) at least one or two reactant supplies configured for operative association with the feed surface when present. Methods of making a three-dimensional object from a polymerization liquid that may use such apparatus are also provided.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: July 5, 2022
    Assignee: Carbon, Inc.
    Inventors: Bob E. Feller, Jason P. Rolland, Joseph M. DeSimone
  • Patent number: 11370173
    Abstract: In one aspect the present disclosure relates to a system for forming a three dimensional (3D) object from a volume of photo-responsive material contained within a material container. A plurality of optical projection subsystems are adapted to be arranged circumferentially around a material container containing the volume of photo-responsive material, and are controlled by a controller. The optical projection subsystems direct optical projections at a plurality of angles ? through the volume of photo-responsive material. The optical projections are further directed about a z axis extending through the volume of photo-responsive material.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: June 28, 2022
    Assignees: Lawrence Livermore National Security, LLC, The Regents of the University of California
    Inventors: Brett Kelly, Robert Panas, Maxim Shusteff, Christopher Spadaccini, Hayden Taylor, Indrasen Bhattacharya
  • Patent number: 11364677
    Abstract: The invention relates to a device for correcting an inhomogeneous intensity distribution of a radiation field generated by a radiation source, in particular a radiation source for a device for producing three-dimensional articles by the layer-by-layer solidifying, in a build plane, of a material that is solidifiable under the action of radiation. The device comprises a correcting or filtering device that is to be introduced, between the radiation source and the build plane, into a radiation path of a device for producing three-dimensional articles by the layer-by-layer solidifying of a material that is solidifiable under the action of radiation. Further, improved methods for producing a device for correcting an inhomogeneous intensity distribution of a radiation field generated by a radiation source, and methods and devices for producing a three-dimensional article are proposed.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: June 21, 2022
    Assignee: Schultheiss GmbH
    Inventor: Andreas Schultheiss
  • Patent number: 11364680
    Abstract: A manufacturing method includes using an additive manufacturing process to form a first object. The first object includes layers, among which is a first layer that comprises a first material and a second material. The first material surrounds the second material within the first layer. Both materials are solids that transition into liquids at corresponding first and second temperatures, the first temperature being lower than the second temperature. The method includes, after having formed the first object, exposing the first object to a temperature that is between the first temperature and the second temperature such that the first material melts, thereby leaving behind a second object, the second object comprising the second material.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: June 21, 2022
    Assignee: Inkbit, LLC
    Inventors: Javier Ramos, Richard Woudenberg, Wojciech Matusik
  • Patent number: 11361120
    Abstract: The present invention relates to a method for processing building information modeling data including the following steps: inputting a building information model's data that includes two types of multiple objects; identifying the objects to generate results of identification; dividing the objects into a first category and a second category in accordance with the results of identification; removing the objects of the second category; readjusting the first category of objects in accordance with a predetermined rule of a building energy simulation software; and defining attributes of the objects of the first category.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: June 14, 2022
    Assignee: RUENTEX ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Samuel Yin, Wu-Sung Chen, Jui-Chen Wang, Ming-Huang Lin, Wen-Kuei Chang
  • Patent number: 11358221
    Abstract: A build part has a body that is additively manufactured on a platform. The body is defined by multiple layers of material consecutively stacked along a build axis and fused together. The body defines one or more fluid channels for directing fluid through the body. Each of the one or more fluid channels is oriented such that a centerline of the respective fluid channel is angled no greater than a maximum offset angle relative to the build axis throughout the length of the fluid channel. The maximum offset angle is no greater than 75 degrees.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: June 14, 2022
    Assignee: THE BOEING COMPANY
    Inventors: Tyler Davis, Stephanie Albanito, Matthew J. Frizzell
  • Patent number: 11351721
    Abstract: According to some aspects, an additive fabrication device is provided configured to form layers of material on a build platform, each layer of material being formed so as to contact a container in addition to the build platform and/or a previously formed layer of material. The additive fabrication device may comprise a container and a wiper, wherein the wiper comprises a wiper arm and a wiper blade coupled to said wiper arm using a pivoting coupling.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: June 7, 2022
    Assignee: Formlabs, Inc.
    Inventors: Ian Ferguson, Konstantinos Oikonomopoulos, Steven Thomas, Benjamin FrantzDale, Nicholas M. Sohn, Maxim Lobovsky
  • Patent number: 11351725
    Abstract: An additive manufacturing device includes a build platform. A recoater is operatively connected to the build platform to move relative to the build platform to coat unfused powder onto a build on the build platform. The recoater includes a recoater mount defining a length-wise receptacle therein, and a recoater blade seated in the receptacle. A blade reel system is operatively connected to the recoater to replace the recoater blade in the receptacle during a build on the build platform.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: June 7, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Lawrence Binek, David W. Morganson
  • Patent number: 11345079
    Abstract: A liquid discharge apparatus to form a three-dimensional object with a plurality of layers of ink laminated includes a stage; a discharge head to discharge photocurable ink, toward the stage, for each layer in a height direction of the three-dimensional object; a driver to move the discharge head or the stage relative to the other; an irradiation device to cure the ink, for each layer, with curing light irradiation; and circuitry. The circuitry causes the discharge head to discharge the ink, according to slice data indicating a printing region and a non-printing region in each layer generated by sliding in the height direction of the three-dimensional object, corresponding to movement of the discharge head; and change, in each layer, illuminance of the curing light in the printing region and the non-printing region in accordance with a state of the printing region and the non-printing region indicated by the slice data.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: May 31, 2022
    Assignee: Ricoh Company, Ltd.
    Inventor: Takashi Tsuchida
  • Patent number: 11338511
    Abstract: An additive manufacturing system, and associated methods, comprise an image projection system comprising a plurality of image projectors that project a composite image onto a build area within a resin pool. The composite image comprises a plurality of sub-images arranged in an array. The properties of each sub-image and the alignment of the position of each sub image within the composite image can be adjusted using a stack of filters comprising: 1) an irradiance mask that normalizes irradiance, 2) a gamma adjustment mask that adjusts sub-image energy based on a reactivity of the resin, 3) a warp correction filter that provides geometric correction, and 4) an edge blending bar at one or more sub-image edges.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: May 24, 2022
    Assignee: Intrepid Automation
    Inventors: Ben Wynne, Jamie Lynn Etcheson, Christopher Sean Tanner, Robert Lee Mueller, Ivan Dejesus Chousal
  • Patent number: 11332625
    Abstract: Radiation curable compositions for additive fabrication are described and claimed. Such compositions are particularly suited for investment casting applications, and include a cationically polymerizable component, a radically polymerizable component, a certain type of prescribed antimony-free, sulfonium salt-based cationic photoinitiator, and a free-radical photoinitiator. In other embodiments, the composition may also include a photosensitizer and/or a UV/absorber. Also described and claimed is a method for using a liquid radiation curable resin for additive fabrication with a certain type of prescribed antimony-free, sulfonium salt-based cationic photoinitiator and a certain type of prescribed photosensitizer in an investment casting process.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: May 17, 2022
    Assignee: Covestro (Netherlands) B.V.
    Inventors: Tai Yeon Lee, Mike Scianna, Paulus Steeman, Marco Driessen, Johan Jansen, Sainath Vaidya