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:
Dec. 10, 2019
Filed:
May. 27, 2015
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 64/20 (2017.01); A61C 13/00 (2006.01); B33Y 30/00 (2015.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01); A61C 5/77 (2017.01); A61C 13/08 (2006.01); B28B 1/00 (2006.01); B29C 64/165 (2017.01);
U.S. Cl.
CPC ...
A61C 13/0013 (2013.01); A61C 5/77 (2017.02); A61C 13/0022 (2013.01); A61C 13/082 (2013.01); B28B 1/001 (2013.01); B29C 64/20 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 80/00 (2014.12); A61C 13/0021 (2013.01); B29C 64/165 (2017.08);
Abstract
A device for powder based additive material manufacturing of dental appliances. The device has a recoater () for providing a powder layer to a build area. The recoater () has a slide () and is adapted for dispensing of the powder to the build area. The recoater () has further at least two powder supplies for individually supplying a first and a second powder on the slide () and a powder transport section in which the first and second powder are brought in touch with each other for at least partially merging. The invention is advantageous in that it allows providing dental blanks having color gradients in all three dimensions.