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:
Jul. 16, 2013
Filed:
Apr. 29, 2009
Applicants:
Manfred Melzig, Wessling, DE;
Yven Rohlfing, Munich, DE (US);
Udo Weigand, Munich, DE;
Inventors:
Assignee:
Rodenstock GmbH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/23 (2006.01); B05D 5/06 (2006.01); C07D 311/94 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to photochromic naphthopyrancs having a double-bridged terphenyl sub-unit, and to the use thereof in plastics of all types, particularly for ophthalmic purposes.