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:
May. 14, 2019
Filed:
Oct. 12, 2017
Applicant:
Novartis Ag, Basel, CH;
Inventors:
Frank Chang, Cumming, GA (US);
Troy Vernon Holland, Suwanee, GA (US);
Thomas M. Moy, Cumming, GA (US);
Assignee:
Novartis AG, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 28/02 (2006.01); C08F 20/56 (2006.01); C08F 22/38 (2006.01); C08F 2/38 (2006.01); C08F 220/56 (2006.01); C08F 230/02 (2006.01); C08F 8/34 (2006.01); G02B 1/04 (2006.01);
U.S. Cl.
CPC ...
C08F 28/02 (2013.01); C08F 2/38 (2013.01); C08F 8/34 (2013.01); C08F 20/56 (2013.01); C08F 22/38 (2013.01); C08F 220/56 (2013.01); C08F 230/02 (2013.01); G02B 1/04 (2013.01); C08F 2810/20 (2013.01);
Abstract
The invention is related to a class of hydrophilic polymers each comprising one sole thiol-containing terminal group. The hydrophilic polymers 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.