US 12,270,968 B2
Weekly and monthly disposable water gradient contact lenses
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, Chicago, IL (US); and Ethan Leveillee, Atlanta, GA (US)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Feb. 8, 2024, as Appl. No. 18/436,094.
Application 18/436,094 is a continuation of application No. 17/572,794, filed on Jan. 11, 2022, granted, now 11,933,941.
Application 17/572,794 is a continuation of application No. 16/204,641, filed on Nov. 29, 2018, granted, now 11,256,003, issued on Feb. 22, 2022.
Claims priority of provisional application 62/598,028, filed on Dec. 13, 2017.
Claims priority of provisional application 62/598,025, filed on Dec. 13, 2017.
Claims priority of provisional application 62/598,029, filed on Dec. 13, 2017.
Claims priority of provisional application 62/598,018, filed on Dec. 13, 2017.
Prior Publication US 2024/0176047 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. 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)
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)] 24 Claims
OG exemplary drawing
 
1. A contact lens, having:
a normalized surface compression force at an indentation depth of 400 nm of about 12 μN/MPa or lower as determined in microindentation tests with a 1 mm microindentation probe;
a polyquaternium-1 uptake of about 0.40 micrograms/lens or less (or about 0.30 micrograms/lens or less); and
a water-break-up time of at least 10 seconds and/or a friction rating of about 2.0 or lower after 30 cycles of digital rubbing treatment after simulated abrasion cycling treatment,
wherein the contact lens comprises an anterior surface, an opposite posterior surface, and a layered structural configuration, wherein the layered structural configuration comprises, in a direction from the anterior surface to the posterior surface, an anterior outer hydrogel layer, an inner layer of a lens material, and a posterior outer hydrogel layer.