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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.:

US 11933941 B1

PDFFull Text
Date of Patent:
Mar. 19, 2024

Filed:

Jan. 11, 2022

Weekly and monthly disposable water gradient contact lenses

Applicant:

Alcon Inc., Fribourg, CH;

Inventors:

Yongxing Qiu, Suwanee, GA (US);

John Dallas Pruitt, Suwanee, GA (US);

Newton T. Samuel, Suwanee, GA (US);

Chung-Yuan Chiang, Johns Creek, GA (US);

Robert Carey Tucker, Johns Creek, GA (US);

Yuan Chang, Atlanta, GA (US);

Ethan Leveillee, Atlanta, GA (US);

Assignee:

Alcon Inc., Fribourg, CH;

Attorney:

Jian Zhou

Primary Examiner:

Travis S Fissel

Int. Cl.
CPC ...
G02B 1/04 (2006.01); B05D 5/00 (2006.01); B29D 11/00 (2006.01); B29K 105/00 (2006.01); B65B 55/22 (2006.01); C08L 33/02 (2006.01); C08L 79/04 (2006.01); C08L 83/04 (2006.01); C09D 133/02 (2006.01); G02B 1/18 (2015.01); G02C 7/04 (2006.01); B05D 1/18 (2006.01); B05D 1/38 (2006.01); B05D 3/00 (2006.01); B05D 3/02 (2006.01); B05D 5/10 (2006.01); B29K 83/00 (2006.01);
U.S. Cl.
CPC ...
G02B 1/043 (2013.01); B05D 5/00 (2013.01); B29D 11/00038 (2013.01); B29D 11/00125 (2013.01); B29D 11/00865 (2013.01); B65B 55/22 (2013.01); C08L 33/02 (2013.01); C08L 79/04 (2013.01); C08L 83/04 (2013.01); C09D 133/02 (2013.01); G02B 1/18 (2015.01); G02C 7/049 (2013.01); B05D 1/18 (2013.01); B05D 1/38 (2013.01); B05D 3/002 (2013.01); B05D 3/02 (2013.01); B05D 5/10 (2013.01); B29K 2083/00 (2013.01); B29K 2105/0061 (2013.01); C08L 2201/10 (2013.01); C08L 2201/54 (2013.01); G02B 2207/109 (2013.01);
Abstract

The invention is related to contact lenses that not only comprise the much desired water gradient structural configurations, but also have a minimized uptakes of polycationic antimicrobials and a long-lasting surface hydrophilicity and wettability even after going through a 30-days lens care regime. Because of the water gradient structural configuration and a relatively-thick, extremely-soft and water-rich hydrogel surface layer, a contact lens of the invention can provide superior wearing comfort. Further, a contact lens of the invention is compatible with multipurpose lens care solutions present in the market and can endure the harsh lens care handling conditions (e.g., digital rubbings, accidental inversion of contact lenses, etc.) encountered in a daily lens care regime. As such, they are suitable to be used as weekly- or monthly-disposable water gradient contact lenses.

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