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. 17, 2015
Filed:
Nov. 26, 2008
Applicants:
Ekkehard Gaydoul, Gross-Bieberau, DE;
Gerhard Zwickel, Erlangen, DE;
Rupert Schnell, Worms, DE;
Inventors:
Assignee:
SCHOTT AG, Mainz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/00 (2006.01); C08L 81/06 (2006.01); C08L 71/10 (2006.01); C08L 81/02 (2006.01);
U.S. Cl.
CPC ...
C08L 81/06 (2013.01); C08L 71/10 (2013.01); C08L 81/02 (2013.01);
Abstract
The invention includes optical elements for applications in regions with stringent fire safety regulations, whose color rendering index Ris at least 97 at a thickness of 4 mm, and which are flame-retardant according to DIN 60332 and are mainly composed of a plastic having at least one structural element selected from the group consisting of sulphones, sulphides, ethers, esters, ketones and imides.