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:
Sep. 30, 2025
Filed:
Jul. 18, 2024
Applicant:
Alcon Inc., Fribourg, CH;
Inventors:
Yongxing Qiu, Suwanee, GA (US);
Robert Carey Tucker, Johns Creek, GA (US);
Yeming Gu, Suwanee, GA (US);
Assignee:
Alcon Inc., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/04 (2006.01); B29D 11/00 (2006.01); B29K 67/00 (2006.01); B29K 83/00 (2006.01); G02B 1/04 (2006.01);
U.S. Cl.
CPC ...
G02C 7/049 (2013.01); B29D 11/00048 (2013.01); B29D 11/00067 (2013.01); G02B 1/043 (2013.01); B29K 2067/00 (2013.01); B29K 2083/00 (2013.01);
Abstract
The invention is related to a contact lens, especially a SiHy contact lens, which comprises a lens bulk material covered with an outer surface hydrogel layer thereon and has a posterior surface and an opposite anterior surface. The outer surface hydrogel layer consists of an anterior outer hydrogel layer and a posterior outer hydrogel layer. A contact lens of the invention is characterized by having a difference in surface softness between its posterior (BC) and anterior (FC) surfaces.