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:
Nov. 18, 2025
Filed:
Jul. 20, 2021
Signify Holding B.v., Eindhoven, NL;
Rifat Ata Mustafa Hikmet, Eindhoven, NL;
Ties Van Bommel, Horst, NL;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
The invention provides a method for producing a 3D item by means of fused deposition modelling, the method comprising: (a) a 3D printing stage comprising: layer-wise depositing 3D printable material, wherein the 3D printable material comprises 3D printable core material and 3D printable shell material, to provide the 3D item comprising a core-shell layer of 3D printed material, wherein the 3D printed material comprises a core comprising 3D printed core material and a shell comprising 3D printed shell material, wherein the shell at least partly encloses the core, wherein the 3D printable core material comprises a pore forming material with a first concentration c, wherein the 3D printable shell material comprises the pore forming material with a second concentration c, wherein c/c≤0.9; and (b) a pore forming stage comprising: heating one or more of (i) the printable material and (ii) the 3D printed material.