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. 10, 2020
Filed:
Mar. 03, 2020
Applicant:
Alcon Inc., Fribourg, CH;
Inventors:
Frank Chang, Cumming, GA (US);
Troy Vernon Holland, Suwanee, GA (US);
Feng Jing, Snellville, GA (US);
Ryan DeSousa, Rockville, MD (US);
Assignee:
Alcon Inc., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 28/02 (2006.01); G02B 1/04 (2006.01); C08F 8/34 (2006.01); C08F 8/48 (2006.01); C08F 8/30 (2006.01); C08B 37/00 (2006.01); C08F 24/00 (2006.01); C08F 26/06 (2006.01); C08F 20/56 (2006.01); G02C 7/04 (2006.01);
U.S. Cl.
CPC ...
C08F 28/02 (2013.01); C08B 37/0063 (2013.01); C08F 8/30 (2013.01); C08F 8/34 (2013.01); C08F 8/48 (2013.01); C08F 24/00 (2013.01); C08F 26/06 (2013.01); G02B 1/04 (2013.01); G02B 1/043 (2013.01); C08F 20/56 (2013.01); C08F 2810/20 (2013.01); G02C 7/04 (2013.01);
Abstract
The invention is related to a class of hydrophilic copolymers comprising loosely dangling thiol-containing pendant groups. The hydrophilic copolymers are highly reactive towards azetidinium groups of an azetidinium-containing polymer upon heating and can find particular use in for producing water-soluble highly-branched hydrophilic polymeric material useful for producing water gradient contact lenses.