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. 24, 2012
Filed:
Feb. 18, 2010
Ramazan Benrashid, Concord, NC (US);
Ivan Sabath, Santee, CA (US);
Jenny Xuan Huynh, Fontana, CA (US);
Ramazan Benrashid, Concord, NC (US);
Ivan Sabath, Santee, CA (US);
Jenny Xuan Huynh, Fontana, CA (US);
Synergeyes, Inc., Carlsbad, CA (US);
Abstract
A method of increasing the hydrophilicity of a polymer surface, such as a contact lens surface, includes exposing the polymer substrate to a first plasma under conditions selected to generate free radicals on the surface of the polymer substrate. The method also includes reacting an organic compound with the free radicals on the surface of the polymer substrate to thereby form an organic coating. The method further includes exposing the organic coating to a second plasma under conditions selected to oxidize the organic coating to thereby form a hydrophilic layer at the substrate surface. The hydrophilic layer can have a contact angle with respect to water that is less than about 50°.