IP Library › Granted Patent US 12,583,178
Granted Patent B2
US 12,583,178 · App. 18/485,683 · Granted Mar 24, 2026

Systems and methods for stereolithography three-dimensional printing

Inventors: Pierre Pascal Anatole Lin (London, GB); Darin Birtwhistle (San Francisco, CA); Daniel Christiansen (San Francisco, CA); Patrick Hendry (San Jose, CA); Aldo Suseno (Hayward, CA); Hany Basam Eitouni (Lafayette, CA)
Assignee: SOUTHWEST GREENE INTERNATIONAL, INC.
B29C64/245B29C64/209B29C64/227B29C64/236B29C64/264B33Y10/00B33Y30/00
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Quick Facts
Patent No.
US 12,583,178
App. No.
18/485,683
Granted
Mar 24, 2026
Kind
B2
Abstract

The present disclosure provides systems and methods for printing three-dimensional (3D) objects. A system for printing a 3D object may comprise at least one platform configured to hold a film of at least one mixture, a deposition unit for providing the film of the at least one mixture, and a building unit for forming at least a portion of the 3D object from the film of the at least one mixture. The system may further comprise a controller operatively coupled to the at least one platform. The controller may be configured to direct the at least one platform to move from the deposition unit to the building unit, or vice versa, along a plurality of non-overlapping paths.

Claims (20)

1 . A system for printing a three-dimensional (3D) object, comprising:

at least one platform configured to hold a film of at least one mixture;

a deposition unit comprising a nozzle in fluid communication with a source of said at least one mixture, wherein said deposition unit is configured to deposit said film onto said at least one platform;

a building unit comprising a light source configured to provide a light sufficient for curing at least a portion of said film, to form at least a portion of said 3D object;

a build head configured to hold said at least said portion of said 3D object; and

a controller operatively coupled to said at least one platform, wherein said controller is configured to direct said at least one platform to move from said deposition unit to said building unit, or vice versa, along a plurality of non-overlapping paths,

wherein said plurality of non-overlapping paths is disposed at different heights relative to each other.

2 . The system of claim 1 , wherein said build head is part of said building unit.

3 . The system of claim 1 , wherein said plurality of non-overlapping paths comprises a first path at height h 1 and a second path at height h 2 , wherein h 1 and h 2 are different such that the first path and the second path do not intersect one another, wherein at least a portion of said first path is disposed over at least a portion of said second path.

4 . The system of claim 3 , wherein said at least one platform comprises a first platform and a second platform, wherein said controller is configured to direct (i) said first platform to move along said first path in a direction away from said deposition unit and towards said building unit and (ii) said second platform to move along said second path in a direction away from said building unit and towards said deposition unit.

5 . The system of claim 4 , wherein said first platform is configured to hold said film of said at least one mixture, wherein said second platform is configured to hold an additional film of said at least one mixture, and wherein said film and said additional film are usable for printing different portions of a same 3D object on said build head.

6 . The system of claim 1 , further comprising at least one actuator configured to direct said at least one platform to move along a vertical direction.

7 . The system of claim 6 , wherein said at least one actuator is not configured to move along said plurality of non-overlapping paths.

8 . The system of claim 1 , wherein said at least one mixture comprises a plurality of mixtures, and wherein said deposition unit is configured to deposit (i) a film of a first mixture of said plurality of mixtures onto a first platform of said at least one platform, and (ii) a film of a second mixture of said plurality of mixtures onto a second platform of said at least one platform.

9 . The system of claim 1 , wherein a spacing between said plurality of non-overlapping paths is greater than a thickness of said film of said at least one mixture.

10 . The system of claim 1 , further comprising at least one actuator configured to direct said at least one platform to move between said plurality of non-overlapping paths.

11 . The system of claim 1 , further comprising at least one sensor configured to (i) determine a profile of said film on said at least one platform, or (ii) subsequent to said curing, detect any excess mixture on said at least one platform.

12 . The system of claim 11 , wherein, in (i), said profile comprises a shape or a thickness of said film.

13 . The system of claim 11 , wherein said at least one sensor is disposed along at least one path of said plurality of non-overlapping paths.

14 . The system of claim 1 , wherein said deposition unit further comprises at least one wiper configured to move across said at least one platform to (i) spread said at least one mixture over said at least one platform to provide said film, or (ii) remove at least a portion of said film from said at least one platform.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 4, 2024
From: LIN, PIERRE PASCAL ANATOLE; BIRTWHISTLE, DARIN; CHRISTIANSEN, DANIEL; HENDRY, PATRICK; SUSENO, ALDO; EITOUNI, HANY BASAM
To: HOLO, INC.
Reel/Frame 067001/0923 →
SECURITY INTEREST Recorded Apr 4, 2024
From: HOLO, INC.
To: VENTURE LENDING & LEASING IX, INC.; WTI FUND X, INC.
Reel/Frame 067006/0873 →
UCC ARTICLE 9 SALE Recorded Apr 4, 2024
From: VENTURE LENDING & LEASING IX, INC.; WTI FUND X, INC.
To: SOUTHWEST GREENE INTERNATIONAL, INC.
Reel/Frame 067164/0648 →
Continuity (3)
Continuation PCTUS2022025229 · Apr 18, 2022
Provisional Application 63176664 · Apr 19, 2021
Related Publication 20240140030A1 · May 2, 2024
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