Patents Examined by Ryan M Ochylski
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Patent number: 11975489Abstract: A 3D printing system includes a tank containing a liquid photopolymer resin. The tank includes an optically transparent window through which light is configured to pass. A heat exchanger is connected to the tank and is configured to cool the liquid polymer resin. A transducer is connected to the tank. The transducer is configured to emit an acoustic wave toward the optically transparent window.Type: GrantFiled: November 24, 2021Date of Patent: May 7, 2024Assignee: Nissan North America, Inc.Inventors: Nanzhu Zhao, Sandeep Patil, Cheng Sun, Rihan Hai
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Patent number: 11969935Abstract: In one aspect, the present disclosure provides a nozzle for a 3D printing system. The nozzle may include a flowpath with a material inlet and a material outlet. The nozzle may further include a valve in fluid communication with the flowpath between the material inlet and the material outlet, where the valve includes a closed state and an open state, where in the closed state the valve obstructs the flowpath between the material inlet and the material outlet, and where in the open state the material inlet is in fluid communication with the material outlet. The nozzle may further include a compensator in fluid communication with the flowpath, where the compensator includes a contracted state associated with the open state of the valve and an expanded state associated with the closed state of the valve.Type: GrantFiled: December 5, 2017Date of Patent: April 30, 2024Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Jennifer A. Lewis, Mark A. Skylar-Scott, Jochen Mueller
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Patent number: 11974348Abstract: A method and system for controlling a level of molten material received in a reservoir of a melt system from a melt grid is disclosed. The method includes receiving a first level of the molten material from a sensor in the reservoir at a first time, receiving a second level of the molten material from the sensor at a second time subsequent to the first time, and comparing the second level of the molten material to a desired operating level to determine a difference between the second level and the desired operating level. The method also includes determining a temperature set point for the melt grid based on at least the difference between the second level and the desired operating level, and adjusting an operating temperature of the melt grid to match the temperature set point.Type: GrantFiled: November 6, 2018Date of Patent: April 30, 2024Assignee: Nordson CorporationInventors: Manuel Guerrero, Charles P. Ganzer
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Patent number: 11964424Abstract: Disclosed herein is an apparatus (100) for making a stereolithographic object (122). Also disclosed herein are methods for making a stereolithographic object (122), a method for locating the position of debris, a method for characterising the viscosity of the material (104), and a method for monitoring consumption of a material (104) for making a stereolithographic object (122).Type: GrantFiled: September 16, 2022Date of Patent: April 23, 2024Inventor: Justin Elsey
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Patent number: 11958218Abstract: A process for producing a polymeric article is provided that includes: sequentially filling a female mould (11) with a first, second, and third batches, wherein the first and third batches include first and third polymeric materials (1p, 3p), and the second batch includes a second polymeric material (2p) and a blowing agent (2b), closing the thus filled cavity with a lid (12) to form a mould defining a closed cavity (10c) of constant volume in time, heating the mould (10) to a processing temperature, to melt the first, second, and third polymeric materials (1p-3p) and to expand the second polymer agent by activation of the blowing agent, cooling and removing the lid (12) to open the cavity and extracting the polymeric article. At least the second polymeric material (2p) includes at least 50 wt. % of recycled polymer in the form of shredded flakes.Type: GrantFiled: February 3, 2020Date of Patent: April 16, 2024Assignee: PaltechInventors: Patrick Feerick, Adrian Doyle
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Patent number: 11951683Abstract: A method for improving z-axis strength of a 3D printed object is disclosed. For example, the method includes printing a three-dimensional (3D) object with a polymer and magnetic particles, heating the 3D object to a temperature at approximately a melting temperature of the polymer, and applying a magnetic field to the 3D object to locally move the magnetic particles in the polymer to generate heat and fuse the polymer around the magnetic particles to improve a z-axis strength of the 3D object.Type: GrantFiled: July 11, 2022Date of Patent: April 9, 2024Assignee: Xerox CorporationInventors: Chunliang Lu, Christopher Wolfe, John Ianni, Mark Mercandetti, John Pawlak, Chieh-Min Cheng
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Patent number: 11951191Abstract: A filled self-cured dental material is described comprising inorganic boron nitride and/or zirconia particles in a solvent dispersion agent, the nanoparticles being entrained by an ultrasonic homogenizer technique to enhance both strength and stiffness of the dental material.Type: GrantFiled: December 15, 2020Date of Patent: April 9, 2024Assignee: University of TabukInventors: Mana Alqahtani, Nacer Badi
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Patent number: 11938676Abstract: Provided is a molding technique with which a molding operation is performed smoothly, preventing the production of defective products. Also provided is a molding apparatus including a nozzle, a guide member guiding a molding material to the nozzle, and a heating device, the molding apparatus being further provided with a prevention structure configured to prevent the molding material from melting during transportation through the guide member.Type: GrantFiled: August 15, 2019Date of Patent: March 26, 2024Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Nobuki Hirooka, Masao Yamawaki
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Patent number: 11938665Abstract: A process for molding one or more bottle preforms, wherein molten plastic is injected into at least one molding cavity; and wherein air is drawn from the at least one molding cavity, through at least one channel for the air to pass from the at least one molding cavity towards the outside of the molding device, by means of suction means; and apparatus and device for performing such a process.Type: GrantFiled: October 1, 2020Date of Patent: March 26, 2024Assignee: S.I.P.A. SOCIETA' INDUSTRIALIZZAZIONE PROGETTAZIONE E AUTOMAZIONE S.P.A.Inventors: Andrea Cavalet, Paolo Spinazze′, Federico Vescovo, Matteo Zoppas
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Patent number: 11931966Abstract: Systems and methods for optical assessments of bioink printability are described. The systems and methods include the use of hardware, software and optical targets to aid in the evaluation of bioink printability. The optical targets are developed and fabricated from 3D printable materials determined to be “nozzle fidelic” and/or materials that possess well characterized thermosensitivity. The optical targets make it possible to rapidly compare and evaluate bioink printability and can be easily customized and tailored for specific applications.Type: GrantFiled: January 25, 2019Date of Patent: March 19, 2024Assignee: CELLINK BIOPRINTING ABInventors: Patrick Thayer, Hany Abushall, Hector Martinez, Erik Gatenholm
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Patent number: 11919076Abstract: The production of a porous copper-zinc structure includes providing copper ink, creating a 3D model of the porous copper-zinc structure, 3D printing the copper ink into a porous copper lattice structure using the 3D model, heat treatment of the porous copper lattice structure producing a heat treated porous copper lattice structure, surface modification of the heat treated porous copper lattice structure by nanowires growth on the heat treated porous copper lattice structure producing a heat treated porous copper lattice structure with nanowires, and electrodeposition of zinc onto the heat treated porous copper lattice structure with nanowires to produce the porous copper-zinc structure.Type: GrantFiled: December 6, 2021Date of Patent: March 5, 2024Assignee: Lawrence Livermore National Security, LLCInventors: Cheng Zhu, Eric B. Duoss, Zhen Qi, Anthony W. Van Buuren, Marcus A. Worsley
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Patent number: 11919247Abstract: A powder-based three-dimensional printing (3DP) method, device and system, and a computer-readable storage medium. The method includes: analyzing printing images of layers corresponding to a part to be printed to determine a target print image and adding a preset mark to the target print image which includes a print image of a target layer that causes a previous powder layer of the target layer to displace during printing; acquiring an image to be printed of a current layer to be printed; identifying the image to be printed to determine whether the preset mark exists on the image to be printed; and if yes, processing the current layer to be printed and/or a previous powder layer of the current layer to be printed such that the previous powder layer of the current layer does not move with powder spreading of the current layer.Type: GrantFiled: December 19, 2021Date of Patent: March 5, 2024Assignee: KOCEL INTELLIGENT MACHINERY LIMITEDInventors: Fan Peng, Donge Zheng, Yinxue Du, Yi Liu, Jun Yang, Cheng Hu, Zixiang Zhou
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Patent number: 11911582Abstract: Disclosed herein is an instrument that enables the in situ formation of architected planar biomaterials and tissues by translating a printer head along a deposition surface such as a patient having burn injuries. In handheld embodiments of the instrument, cell-laden biopolymer solutions are perfused through a moving microfabricated printer head and deposited onto a stationary planar surface or a wound. The printer head may be translated via a drive mechanism. A soft deformable roller mitigates further damage to the injured area of skin as it rolls over it and a gimbal mechanism to which the printer head is attached is in contact with the injured tissue but is configured so that the printer head while in contact with tissue, does not exert undue pressure on the would area.Type: GrantFiled: July 19, 2019Date of Patent: February 27, 2024Assignees: SUNNYBROOK RESEARCH INSTITUTE, THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTOInventors: Richard Cheng, Gertraud Eylert, Sijin He, Jean-Michel Gariépy, Navid Hakimi, Marc G. Jeschke, Axel Guenther
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Patent number: 11904526Abstract: An additive manufacturing method and system comprising: a nozzle having a nozzle sidewall defining a central channel for allowing a deposition material filament to be dispensed therethrough on a workpiece; a heat source operatively coupled to the nozzle for melting the deposition material filament dispensed through the nozzle to form an additive material layer on a top surface of the workpiece; and an ultrasonic wave generator for providing ultrasonic waves into the melted deposition material in order to break up the oxide layer around the melted deposition material and bond the additive material layer to the workpiece.Type: GrantFiled: July 13, 2018Date of Patent: February 20, 2024Inventor: Francesco Gallé
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Patent number: 11904521Abstract: A rectangular substrate is prepared by providing a starting rectangular substrate having front and back surfaces and four side surfaces as ground, and pressing a rotary polishing pad perpendicularly against one side surface under a constant pressure, and relatively moving the rotary polishing pad and the substrate parallel to the side surface, for thereby polishing the side surface of the substrate. In the imprint lithography, the rectangular substrate is capable of controlling compression and pattern shape at a high accuracy and thus transferring a complex pattern of fine feature size to a recipient.Type: GrantFiled: September 26, 2017Date of Patent: February 20, 2024Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Daiyu Okafuji, Hiroyuki Yamazaki, Masao Ando, Masaki Takeuchi
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Patent number: 11898684Abstract: A CIPP liner reel system for managing the utilization and deployment of CIPP liners. The CIPP liner reel system generally includes a frame connected to a reel and drive unit. The drive unit is connected to the reel to control the rotation of its core. This core contains an opening that provides access to a connector unit within the core. This connector unit can be used to connect the reel to the end of a CIPP liner using a strap. Rotation of the core causes CIPP liner to wind on to or unwind from the reel. The reel may also contain a left guide member and a right guide member to assist in controlling the process of winding and unwinding the CIPP liner. The frame may also include a tractor connector that enables the CIPP liner reel system to be coupled to and transported by a tractor without affecting its operation.Type: GrantFiled: March 21, 2022Date of Patent: February 13, 2024Assignee: Subsurface, Inc.Inventors: Gary H. Strom, Brandon G. Strom
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Patent number: 11897204Abstract: In an example, a method includes in an additive manufacturing process, generating a first object and generating an ancillary object on top of the first object to reduce a thermal gradient of the first object during cooling.Type: GrantFiled: December 6, 2017Date of Patent: February 13, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Pol Fornos, David Ramirez Muela, Sergio Puigardeu Aramendia
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Patent number: 11872749Abstract: A system and method of additively manufacturing a part via salt micro-spheres. The method includes mixing salt micro-spheres with an additive manufacturing material to form an additive manufacturing material mixture. The additive manufacturing material mixture is deposited on a build platform layer by layer and cured so as to create a structure having pores formed by the salt micro-spheres. The salt micro-spheres may then be dissolved and flushed from the pores.Type: GrantFiled: April 29, 2022Date of Patent: January 16, 2024Assignee: Honeywell Federal Manufacturing & Technologies, LLCInventors: Steven Todd LaPlant, Michael Joseph Batrick, Ruben Arturo Pino
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Patent number: 11872753Abstract: In some examples, a controller receives measurement data responsive to operation of a vibrated spreader for use in dispensing a build material onto a target surface, and controls a frequency of a vibration of the spreader based on the measurement data.Type: GrantFiled: October 12, 2018Date of Patent: January 16, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: David A. Champion, Adriaan Spierings, Thomas Bauer
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Patent number: 11840024Abstract: A system includes a controller to receive data corresponding to an object or slices of the object to be generated by a 3D printer, wherein the 3D printer includes an array of printhead nozzles to selectively eject a print agent on a layer of build material in a build chamber having a build chamber wall, the array of printhead nozzles spanning substantially the full width of the build chamber and moveable along a length of the build chamber. The controller to generate first print data used to generate layers of the object based on the received object data, and to generate second print data used to generate layers of a sacrificial barrier located between the object and the build chamber wall, the second print data is generated such that different parts of the sacrificial barrier are generated using a different plurality of nozzles of the array of printhead nozzles.Type: GrantFiled: April 23, 2019Date of Patent: December 12, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Roger Fadurdo Orellana, Pol Fornos Martinez, Salvador Sanchez Ribes, Ismael Fernandez Aymerich, Manuel Freire Garcia