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:
Apr. 06, 2021
Filed:
Feb. 21, 2019
Novartis Ag, Basel, CH;
Steve Yun Zhang, Sugar Hill, GA (US);
Maria F. Gubitosi Raspino, Lilburn, GA (US);
Richard Charles Breitkopf, Dunwoody, GA (US);
Daqing Wu, Suwanee, GA (US);
Junhao Ge, Johns Creek, GA (US);
Augustine Twum Kumi, Grayson, GA (US);
Zach Munoz, Smyrna, GA (US);
Weihong Lang, Suwanee, GA (US);
Alcon Inc., Fribourg, CH;
Abstract
The present invention generally relates to silicone hydrogel contact lenses each inherently having, on lens surfaces, a relatively-high concentration of primary amino groups and to a method for producing the same. The invention is also related to silicone hydrogel contact lens precursors each inherently having, on lens surfaces, a relatively-high concentration of N-Boc-protected primary amino groups which can be easily and conveniently deprotected during lens extraction and/or hydration steps.