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:
Feb. 09, 2021
Filed:
Dec. 19, 2016
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Christian Rewitz, Cologne, DE;
Rainer Hagen, Leverkusen, DE;
Thomas Fäcke, Leverkusen, DE;
Günther Walze, Leverkusen, DE;
Friedrich-Karl Bruder, Krefeld, DE;
Assignee:
Covestro Deutschland AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03H 1/02 (2006.01); G03H 1/20 (2006.01); G03H 1/04 (2006.01); G02B 6/34 (2006.01);
U.S. Cl.
CPC ...
G03H 1/0248 (2013.01); G03H 1/0408 (2013.01); G03H 1/202 (2013.01); G02B 6/34 (2013.01); G03H 2001/0415 (2013.01); G03H 2223/16 (2013.01); G03H 2223/18 (2013.01); G03H 2223/25 (2013.01); G03H 2227/03 (2013.01); G03H 2227/04 (2013.01);
Abstract
The invention relates to an apparatus () for producing volume reflection holograms with substrate-guided reconstruction beams, comprising: