The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2026
Filed:
Sep. 07, 2023
Stratasys, Inc., Minnetonka, MN (US);
Aaron Daniel Gregg, Bloomington, MN (US);
Keith Wade Kooiman, Chaska, MN (US);
Karl Anthony Nelson, Minneapolis, MN (US);
Paul Joseph Leavitt, Minneapolis, MN (US);
Thomas James Studanski, Plymouth, MN (US);
Subramaniam Jayanti, Eden Prairie, MN (US);
STRATASYS, INC., Minnetonka, MN (US);
Abstract
A method of printing a multi-material part in a layer-wise manner with an extrusion-based 3D printer includes providing a sliced digital model of a multi-material part and determining a number of materials in each of the slices of the digital mode. The method includes utilizing a digital model of a purge tower having N subdivisions having a closed geometry, wherein N is the number of print heads needed to print the part that is greater than or equal to three, each adjacent subdivision contact one another along an interface and assigning each print head to one subdivision and to tool paths forming the one subdivision in each layer. The method includes reassigning the assigned subdivision within the purge tower of an inactive print head in a layer to a print head that is active in the layer of the multi-material part.