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Popa; Minea A.
Roseville, MN
No. of patents:

Patent Number Title Of Patent Date Issued
7374712 Method for building three-dimensional models from thermoplastic modeling materials May 20, 2008
The present invention is a method and apparatus for building three-dimensional models by deposition modeling techniques from moisture-sensitive thermoplastics. A feedstock of thermoplastic modeling material is dried to a low moisture content and supplied to a dispensing head of a mod
6923634 Filament loading system in an extrusion apparatus August 2, 2005
An apparatus which extrudes flowable material from a liquifier includes a system for loading filament supplied in a cassette. The cassette is loaded into a loading bay of the apparatus. A strand of filament from the cassette is engaged and advanced along a path to the liquifier using a
6776602 Filament cassette and loading system August 17, 2004
Disclosed are a filament cassette and a filament loading assembly for supplying filament in a three-dimensional deposition modeling machine. The filament cassette contains a rotatable spool of filament, and has an exit orifice through which a filament strand may exit the cassette. The
6685866 Method and apparatus for three-dimensional modeling February 3, 2004
Disclosed are an apparatus and method for three-dimensional deposition modeling, which shield a supply of modeling filament fed through a deposition modeling machine from exposure to environmental moisture. Dry gas under pressure is supplied to a filament path leading from a material

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