Markforged, Inc.

United States of America

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IPC Class
B33Y 10/00 - Processes of additive manufacturing 4
B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber 2
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor 2
B22F 10/10 - Formation of a green body 1
B22F 10/18 - Formation of a green body by mixing binder with metal in filament form, e.g. fused filament fabrication [FFF] 1
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Status
Pending 1
Registered / In Force 5
Found results for  patents

1.

ADDITIVE MANUFACTURING WITH HEAT-FLEXED MATERIAL FEEDING

      
Document Number 03040921
Status In Force
Filing Date 2017-12-05
Open to Public Date 2018-06-14
Grant Date 2024-02-20
Owner MARKFORGED, INC. (USA)
Inventor Mark, Gregory Thomas

Abstract

In additive manufacturing, composite build material filament and release material filament (each a composite of metal/ceramic powder plus binder) are dropped from respective spools to a print head. On the spools and over the drop height, the filaments are heated to a temperature that flexes the filaments but does not soften them to a breaking point, e.g., heated but below a glass transition temperature of a softener (for example, wax) of the binder. The drop height is of similar linear scale to the build plate. The materials are debound and sintered.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B33Y 10/00 - Processes of additive manufacturing

2.

SUPPORTS FOR SINTERING ADDITIVELY MANUFACTURED PARTS

      
Document Number 03040866
Status Pending
Filing Date 2017-10-02
Open to Public Date 2018-06-07
Owner MARKFORGED, INC. (USA)
Inventor Mark, Gregory Thomas

Abstract

To reduce distortion in an additively manufactured part, a shrinking platform is formed from a metal particulate filler in a debindable matrix. Shrinking supports of the same material are formed above the shrinking platform, and a desired part of the same material is formed upon them. A sliding release layer is provided below the shrinking platform of equal or larger surface area than a bottom of the shrinking platform to lateral resistance between the shrinking platform and an underlying surface. The matrix is debound sufficient to form a shape-retaining brown part assembly including the shrinking platform, shrinking supports, and the desired part. The shape-retaining brown part assembly is heated to shrink all of the components together at a same rate via atomic diffusion.

IPC Classes  ?

  • B22F 10/47 - Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
  • B22F 10/10 - Formation of a green body
  • B22F 10/64 - Treatment of workpieces or articles after build-up by thermal means
  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B22F 10/18 - Formation of a green body by mixing binder with metal in filament form, e.g. fused filament fabrication [FFF]

3.

SINTERING ADDITIVELY MANUFACTURED PARTS WITH A DENSIFICATION LINKING PLATFORM

      
Document Number 03040929
Status In Force
Filing Date 2017-12-01
Open to Public Date 2018-06-07
Grant Date 2023-08-01
Owner MARKFORGED, INC. (USA)
Inventor Mark, Gregory Thomas

Abstract

To reduce distortion in an additively manufactured part, a densification linking platform and/or supports of the same composite as the desired part may be printed below the part. After debinding, a resulting shape-retaining brown part assembly is sintered to densify together at a same rate as neighboring metal particles throughout the shape- retaining brown part assembly undergo atomic diffusion. Distortion is reduced by interconnecting portions of the shape-retaining brown part assembly, printing release layers among the portions, depositing adjacent roads of the assembly in retrograde directions, and/or providing channels to accelerate a debinding process.

IPC Classes  ?

  • B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
  • B33Y 10/00 - Processes of additive manufacturing
  • B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof

4.

EMBEDDING 3D PRINTED FIBER REINFORCEMENT IN MOLDED ARTICLES

      
Document Number 03011286
Status In Force
Filing Date 2017-01-12
Open to Public Date 2017-07-20
Grant Date 2020-07-21
Owner MARKFORGED, INC. (USA)
Inventor Mark, Gregory Thomas

Abstract

A reinforced molding is formed having an internal continuous fiber reinforcement preform embedded therein. Continuous reinforcing fiber is deposited in a reinforcement volume to form a continuous fiber reinforcement preform, and the reinforcement preform is then located within a mold of a molding apparatus. The mold is loaded with flowable and substantially isotropic molding material, e.g., by injection with heated and/or pressurized resin. The molding material is hardened (by curing or cooling or the like) to overmold the continuous fiber reinforcement preform. The resulting reinforced molding surrounds the internal continuous fiber reinforcement preform with a hardened substantially isotropic molding material.

IPC Classes  ?

  • B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
  • B33Y 10/00 - Processes of additive manufacturing

5.

METHODS FOR FIBER REINFORCED ADDITIVE MANUFACTURING

      
Document Number 02914512
Status In Force
Filing Date 2014-06-05
Open to Public Date 2014-12-11
Grant Date 2020-10-20
Owner MARKFORGED, INC. (USA)
Inventor Mark, Gregory Thomas

Abstract

Various embodiments related to three dimensional printers, and reinforced filaments, and their methods of use are described. In one embodiment, a void free reinforced filament is fed into an extrusion nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature greater than a melting temperature of the matrix material and less than a melting temperature of the core prior to extruding the filament from the extrusion nozzle.

IPC Classes  ?

  • D04H 1/54 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
  • B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]

6.

THREE DIMENSIONAL PRINTING

      
Document Number 02907492
Status In Force
Filing Date 2014-03-21
Open to Public Date 2014-09-25
Grant Date 2022-03-29
Owner MARKFORGED, INC. (USA)
Inventor
  • Mark, Gregory Thomas
  • Gozdz, Antoni S.

Abstract

Three dimensional printers, and reinforced filaments, and their methods of use are described. A void free reinforced filament is fed into an extrusion nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature greater than a melting temperature of the matrix material and less than a melting temperature of the core prior to extruding the filament from the extrusion nozzle.

IPC Classes  ?

  • B29C 70/70 - Completely encapsulating inserts
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • D01F 8/04 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the like; Manufacture thereof from synthetic polymers