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. 06, 2022
Filed:
Dec. 10, 2019
Applicant:
Alcon Inc., Fribourg, CH;
Inventors:
Honghui Lu, Johns Creek, GA (US);
Mark Neely, Alpharetta, GA (US);
Alice Weimin Liu, Alpharetta, GA (US);
Xuxian Niu, San Ramon, CA (US);
Uwe Haken, Norcross, GA (US);
Assignee:
Alcon Inc., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01); G02B 1/04 (2006.01); B29K 83/00 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B29D 11/0025 (2013.01); B29D 11/00134 (2013.01); G02B 1/043 (2013.01); B29K 2083/00 (2013.01); B29K 2105/0061 (2013.01);
Abstract
The present invention generally relates to a method for producing silicone hydrogel contact lenses having less optical defects or free of optical defects by subjecting the extraction tray for the formed silicone hydrogel contact lenses to a reciprocating lowering and raising motion thereof to obtain the silicone hydrogel contact lenses.