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:
Aug. 20, 2013
Filed:
Feb. 24, 2012
Yuwen Liu, Dublin, CA (US);
Charlie Chen, San Ramon, CA (US);
YE Hong, Pleasanton, CA (US);
Charles A. Francis, Union City, CA (US);
LI Yao, San Ramon, CA (US);
Arthur Back, Danville, CA (US);
Yuwen Liu, Dublin, CA (US);
Charlie Chen, San Ramon, CA (US);
Ye Hong, Pleasanton, CA (US);
Charles A. Francis, Union City, CA (US);
Li Yao, San Ramon, CA (US);
Arthur Back, Danville, CA (US);
CooperVision International Holding Company, LP, St. Michael, BB;
Abstract
Silicone hydrogel contact lenses are produced without using volatile organic solvents to extract materials from the polymerized contact lens bodies, and instead are washed with aqueous liquids. The silicone hydrogel contact lenses so produced have ophthalmically wettable lens surfaces. The hydrated silicone hydrogel contact lenses have diameters that are at least 24% larger than the diameters of the silicone hydrogel contact lenses prior to hydration or washing.