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:
Jun. 18, 2019
Filed:
Nov. 15, 2016
Applicant:
Novartis Ag, Basel, CH;
Inventors:
Frank Chang, Cumming, GA (US);
Ryan DeSousa, Atlanta, GA (US);
Troy Vernon Holland, Suwanee, GA (US);
Walter R. Laredo, Fort Worth, TX (US);
Assignee:
Novartis AG, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 249/20 (2006.01); C07C 225/22 (2006.01); C07C 225/10 (2006.01); C08F 116/06 (2006.01); G02B 1/04 (2006.01); G02C 7/04 (2006.01); G02C 7/10 (2006.01); B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
C07C 225/22 (2013.01); B29D 11/00038 (2013.01); C07C 225/10 (2013.01); C07D 249/20 (2013.01); C08F 116/06 (2013.01); G02B 1/043 (2013.01); G02C 7/049 (2013.01); G02C 7/108 (2013.01);
Abstract
Described herein are dimethyl acetal-containing UV-absorbing compounds and their uses in preparing UV-absorbing polyvinyl alcohol prepolymers suitable for producing UV-absorbing contact lenses capable of blocking ultra-violet ('UV') radiation and optionally (but preferably) violet radiation with wavelengths from 380 nm to 440 nm, thereby protecting eyes to some extent from damages caused by UV radiation and potentially from violet radiation. This invention also provides a UV-absorbing polyvinyl alcohol prepolymer.