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:
Mar. 23, 2021
Filed:
Dec. 12, 2016
3m Innovative Properties Company, St. Paul, MN (US);
Malte Korten, Moorenweis, DE;
Helmar Mayr, Kaufering, DE;
Gioacchino Raia, Turkenfeld, DE;
Bernhard Hofmann, Peissenberg, DE;
Adrian Eckert, Herrsching, DE;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An additive manufacturing system has a light permeable base (), a build carrier () for holding a workpiece () and a light source () which is arranged to emit light through the light permeable base (). The light permeable base () and the build carrier () are positionable relative to each other in a build dimension in which the workpiece () is built up. The system further has a resin vat () in which the light permeable base () forms a wall portion thereof. The system further comprises a plurality of resin supplies () for supplying different light hardenable resins in direct contact with each other in said vat (). The system facilitates the rapid manufacturing of a dental restoration having a color gradation.