Patents by Inventor John Hart

John Hart has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11969795
    Abstract: Support structures are used in certain additive fabrication processes to permit fabrication of a greater range of object geometries. For additive fabrication processes with materials that are subsequently sintered into a final part, an interface layer is formed between the object and support in order to inhibit bonding between adjacent surfaces of the support structure and the object during sintering.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: April 30, 2024
    Assignee: Desktop Metal, Inc.
    Inventors: Jonah Samuel Myerberg, Ricardo Fulop, Michael Andrew Gibson, Matthew David Verminski, Richard Remo Fontana, Christopher Allan Schuh, Yet-Ming Chiang, Anastasios John Hart
  • Publication number: 20240133905
    Abstract: Cell deposition and staining apparatuses and methods are disclosed herein. In particular, the deposition and staining apparatuses disclosed herein provide low-volume, automated bench top systems for depositing and staining cellular samples on a cytological slide. An example deposition and staining apparatus includes a housing having an access door; a substrate processing holder located within the housing configured to hold one or more substrates and/or one or more substrate cartridges, wherein the substrate processing holder is accessible when the access door is in an open configuration; at least one opening located at least partially above at least a portion of the substrate processing holder; a spray nozzle configured to dispense a gaseous substance into the substrate processing area; a user interface configured receive an input from a user, and in response to receiving the input, cause execution of a pre-programmed protocol; and a waste and/or reagent holder element.
    Type: Application
    Filed: June 12, 2023
    Publication date: April 25, 2024
    Inventors: Hariharan Subramanian, Michael Verleye, Micah Litow, Justin R. Derbas, Sergey Rozhok, John Hart, Chester Henderson, Rebecca Bartel, Nathan Ray, Anthony White
  • Publication number: 20240118134
    Abstract: Stray light in a metering structure is controlled by surrounding with a rigid shield an elongated length of a strut and supporting on the rigid shield a surface finish which is highly absorptive of light. The strut is thermally decoupled from the rigid shield using a plurality of insulating web layers comprising a multi-layer insulation (MLI) system disposed between the strut and the rigid shield. The MLI in such scenarios (1) thermally isolates the strut from the shield (2) serves as a support structure to support the rigid shield on the strut, and (3) absorbs thermally induced mechanical stresses as between the rigid shield and the strut.
    Type: Application
    Filed: October 10, 2022
    Publication date: April 11, 2024
    Inventors: Gordon Chun Kong Wu, Nicholas Piekiel, John Osborn, Kenneth Patterson, Brian Hart, Peter Bickford
  • Patent number: 11936722
    Abstract: Techniques are described for wireless communication. One method, for processing a request received via a first mesh network using resources of a second mesh network, includes receiving, at a first node, a request that was generated by a requesting node of the first mesh network. The method further includes determining at the first node, based on configuration information about the second mesh network that is different from the first mesh network, that a second node of the second mesh network has an available computing resources level to process data related to the request. In accordance with the determining, the method additionally includes instructing the second node of the second mesh network to process the data related to the request to create requested data. And the requested data is provided to the requesting node of the first mesh network.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: March 19, 2024
    Assignee: AERVIVO, INC.
    Inventor: Michael John Hart
  • Patent number: 11931559
    Abstract: A syringe mixing system is provided for housing and mixing contents between at least two syringes. In some embodiments, a syringe coupler is provided that receives first and second syringes and includes a valve member that is convertible between a closed position and an open position. Retention systems for preventing or inhibiting removal of at least one syringe after use are also provided.
    Type: Grant
    Filed: August 11, 2023
    Date of Patent: March 19, 2024
    Assignee: TOLMAR INTERNATIONAL LIMITED
    Inventors: James Sherman, Casey Dean, Carl Hart, John Bingham, Hossam Aboudagher
  • Patent number: 11916159
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; and a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein at least one of the solar subcells has a graded band gap throughout the thickness of at least a portion of its emitter layer and base layer.
    Type: Grant
    Filed: November 14, 2022
    Date of Patent: February 27, 2024
    Assignee: SolAero Technologies Corp.
    Inventors: John Hart, Daniel Derkacs, Zachary Bittner, Andrew Espenlaub
  • Patent number: 11904217
    Abstract: A golf club head includes a crown surface having an apex at a highest point and extending between the face, the rear, the heel and the toe of the golf club head. The golf club head also includes a plurality of crown turbulators projecting from the surface of the crown and located between the face and the apex, wherein each adjacent pair of crown turbulators is separate and spaced apart to define a space between the adjacent pair of crown turbulators.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: February 20, 2024
    Assignee: Karsten Manufacturing Corporation
    Inventors: Erik M. Henrikson, Paul D. Wood, John Hart, Marty R. Jertson, Ryan M. Stokke, Xiaojian Chen, Matthew W. Simone, Yujen Huang
  • Patent number: 11900842
    Abstract: A device includes a backplane and a plurality of elements arranged on the backplane. The plurality of elements form an irregular pattern. The backplane includes a plurality of circuits. The plurality of elements are coupled to the plurality of circuits by conductive vias that are regularly spaced.
    Type: Grant
    Filed: September 15, 2023
    Date of Patent: February 13, 2024
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Jonathan Seamus Blackley, Watson Brent Boyett, Sylvain Marcel Colin, Robin James Green, Stephen John Hart, Margaret H. Hsu, DeaGyu Kim, Mark Anthony Loya, Benjamin Francis Neil, Kamran Qaderi, Tina Qin, Jesus Manuel Caridad Ramirez, Jayakrishna Sashidharan, Asher Zelig Sefami, Sameer Sudhir Walavalkar, Joshua D. Wiensch
  • Patent number: 11893966
    Abstract: Systems and methods for improving operating characteristics of displays such as liquid crystal on silicon displays.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: February 6, 2024
    Assignee: Snap Inc.
    Inventors: Stephen John Hart, Rock Edward Kent, Howard V. Goetz, James L. Sanford, Nicholas W. Melena
  • Publication number: 20240033587
    Abstract: A golf club head includes a crown surface having an apex at a highest point and extending between the face, the rear, the heel and the toe of the golf club head. The golf club head also includes a plurality of crown turbulators projecting from the surface of the crown and located at least partially between the leading edge and the apex, wherein the height of each turbulator decreases from the leading edge toward the rear portion.
    Type: Application
    Filed: October 10, 2023
    Publication date: February 1, 2024
    Inventors: Erik M. Henrikson, Paul D. Wood, John Hart, Marty R. Jertson, Bradley D. Schweigert
  • Patent number: 11884004
    Abstract: Systems and methods for making it easier to remove support structures printed in conjunction with printing an object using stereolithographic additive manufacturing are disclosed. In some exemplary embodiments, one or more interfaces between the printed object and the support structures are modulated to allow for easy separation between them, in some instances even when the object and support structures are made from the same material. Various modulation techniques are disclosed, including adjusting an intensity of exposure to light at interfaces between the object and support structures, and using two materials where one material cures at two wavelength ranges and the other material only cures at one of the two wavelength ranges. Other systems and methods that allow for easy separation of part and support structure are also described.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: January 30, 2024
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Abhinav Rao, Anastasios John Hart
  • Publication number: 20240000622
    Abstract: This invention relates to features of durable absorbent pants (for example, underwear briefs) to be worn for containing and absorbing bodily discharges, wherein the pants include an integrated absorbent panel.
    Type: Application
    Filed: June 21, 2023
    Publication date: January 4, 2024
    Inventors: Scott Kendyl STANLEY, Noel Leon GAUTHIER, Jesus VELAZQUEZ, Brian Kenneth BURGDORF, C. Michelle DUNAWAY, Jessica WETZEL, Andrew Paul RAPACH, Travis Kyle HODGDON, Jessica Frances HEMMER, John Hart KELLY
  • Publication number: 20230391001
    Abstract: Systems and methods for additive manufacturing are generally disclosed. Additive manufacturing may be performed in a continuous manner and/or semi-continuous manner by transporting one or more build plates relative to printheads that comprise a plurality of energy source arrays and/or binderjet arrays that may be selectively activated to form a desired pattern in a material layer disposed on the one or more build plates.
    Type: Application
    Filed: May 31, 2023
    Publication date: December 7, 2023
    Applicant: VulcanForms Inc.
    Inventors: Martin C. Feldmann, Raghav Aggarwal, Anastasios John Hart, Brent Jerome Brunell
  • Publication number: 20230382040
    Abstract: According to some aspects, techniques are provided for fabricating sinterable metallic parts through the application of directed energy to a build material. In particular, applying energy to a build material comprising a polymer mixed with a metal powder may cause the polymer to form a cohesive structure with the metal powder. As a result, the polymer acts as a “glue” to produce a metallic green part without local melting of the metal. The green part may subsequently be sintered to remove the polymer and produce a fully dense metal part. Optionally, a step of debinding may also be performed prior to, or simultaneously with, sintering.
    Type: Application
    Filed: March 30, 2023
    Publication date: November 30, 2023
    Applicant: Desktop Metal, Inc.
    Inventors: Jonah Samuel Myerberg, Anastasios John Hart
  • Publication number: 20230361234
    Abstract: A multijunction solar cell including an upper first solar subcell having an emitter and base layers forming a photoelectric junction; a second solar subcell disposed under and adjacent to the upper first solar subcell, and having an emitter and base layers forming a photoelectric junction; and a third solar subcell disposed under and adjacent to the second solar subcell and having an emitter and base layers forming a photoelectric junction; wherein at least one of the base and emitter layers of at least a particular solar subcell from among the upper first solar subcell, the second solar subcell, and the third solar subcell has a graded band gap throughout at least a portion of thickness of its active layer adjacent to the photoelectric junction and being in a range of 20 to 300 MeV greater than a band gap in the active layer away from the photoelectric junction.
    Type: Application
    Filed: July 13, 2023
    Publication date: November 9, 2023
    Inventors: JOHN HART, DANIEL DERKACS, ZACHARY BITTNER, ANDREW ESPENLAUB
  • Patent number: 11799049
    Abstract: A multijunction solar cell including a metamorphic layer, and particularly the design and specification of the composition, lattice constant, and band gaps of various layers above the metamorphic layer in order to achieve reduction in “bowing” of the semiconductor wafer caused by the lattice mismatch of layers associated with the metamorphic layer.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: October 24, 2023
    Assignee: SolAero Technologies Corp.
    Inventors: Zachary Bittner, John Hart, Samantha Whipple, Nathaniel Miller, Daniel Derkacs
  • Patent number: 11787691
    Abstract: The present invention provides methods for uniform growth of nanostructures such as nanotubes (e.g., carbon nanotubes) on the surface of a substrate, wherein the long axes of the nanostructures may be substantially aligned. The nanostructures may be further processed for use in various applications, such as composite materials. For example, a set of aligned nanostructures may be formed and transferred, either in bulk or to another surface, to another material to enhance the properties of the material. In some cases, the nanostructures may enhance the mechanical properties of a material, for example, providing mechanical reinforcement at an interface between two materials or plies. In some cases, the nanostructures may enhance thermal and/or electronic properties of a material. The present invention also provides systems and methods for growth of nanostructures, including batch processes and continuous processes.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: October 17, 2023
    Assignee: Massachusetts Institute of Technology
    Inventors: Anastasios John Hart, Brian L. Wardle, Enrique J. Garcia, Alexander H. Slocum
  • Publication number: 20230327045
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below the upper first solar subcell, and having a second band gap smaller than said first band gap; wherein a light scattering layer is provided below the second solar subcell and adjacent to the second solar subcell for redirecting the incoming light that has passed through the second solar subcell back into the second solar subcell to be scattered along longer path lengths in the second solar subcell.
    Type: Application
    Filed: November 23, 2022
    Publication date: October 12, 2023
    Inventors: Daniel Derkacs, Zachary Bittner, John Hart, Clayton Cozzan
  • Patent number: 11784274
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein at least one of the solar subcells has a graded band gap throughout the thickness of at least a portion of the active layer of the one solar subcell.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: October 10, 2023
    Assignee: SolAero Technologies Corp
    Inventors: John Hart, Daniel Derkacs, Zachary Bittner, Andrew Espenlaub
  • Patent number: 11784273
    Abstract: A multijunction solar cell comprising a first solar subcell having a first band gap; a second solar subcell disposed adjacent to said first solar subcell and including an emitter layer, and a base layer having a second band gap less than the first band gap, and being lattice mismatched with the upper first solar subcell, and an intermediate layer directly adjacent to and disposed between first and the second solar subcells and compositionally graded to lattice match the first solar subcell on one side and the second solar subcell on the other side, and arranged so that light can enter and pass through the first solar subcell and at least a portion of which can be reflected back into the first solar subcell by the intermediate layer, and is composed of a plurality of layers of materials with discontinuities in their respective indices of refraction.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: October 10, 2023
    Assignee: Sol Aero Technologies Corp.
    Inventors: Daniel Derkacs, John Hart, Zachary Bittner, Andrew Espenlaub