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:
Dec. 05, 2023
Filed:
Mar. 18, 2021
Alcon Inc., Fribourg, CH;
Yang Zheng, Alpharetta, GA (US);
Junhao Ge, Redwood City, CA (US);
Steve Yun Zhang, Sugar Hill, GA (US);
Alcon Inc., Fribourg, CH;
Abstract
The invention is generally related to a method for producing, in a relatively efficient and consistent manner, embedded or hybrid silicone hydrogel contact lenses, and also to unprocessed embedded or hybrid silicone hydrogel contact lenses, according to conventional cast-molding technologies. A method of the invention involve use of a polymeric non-reactive diluent in preparing a polymerizable composition for forming the silicone hydrogel material of the unprocessed embedded or hybrid silicone hydrogel contact lens, which is cast-molded with a lens mold. The unprocessed cast-molded embedded or hybrid silicone hydrogel contact lens has no or a minimal water-swelling degree, so that lens distortion or delamination during the hydration of the unprocessed embedded or hybrid silicone hydrogel contact lens.