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:
Feb. 04, 2014
Filed:
Feb. 24, 2012
Guigui Wang, Livermore, CA (US);
Yun Zhang, Dublin, CA (US);
Yuwen Liu, Dublin, CA (US);
YE Hong, Pleasanton, CA (US);
Charlie Chen, San Ramon, CA (US);
Peter Zhu, Cupertino, CA (US);
Guigui Wang, Livermore, CA (US);
Yun Zhang, Dublin, CA (US);
Yuwen Liu, Dublin, CA (US);
Ye Hong, Pleasanton, CA (US);
Charlie Chen, San Ramon, CA (US);
Peter Zhu, Cupertino, CA (US);
CooperVision International Holding Company, LP, St. Michael, BB;
Abstract
Hydrogel contact lenses that are derived from a polymerizable composition including at least one hydrophilic monomer and at least one phosphine-containing component are described. The hydrogel of the contact lenses can be a silicone hydrogel or a non-silicone hydrogel. Use of polymerizable compositions comprising a phosphine-containing component can be cured under both inert and air atmospheres, and can be used to form hydrogel contact lenses having improved shape retention properties, having improved resistance to discoloration. Batches of hydrogel contact lenses and methods of making hydrogel contact lenses are also described.