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:
Dec. 25, 2018
Filed:
Aug. 01, 2016
GL Chemtec Vision Inc., Oakville, ON, CA;
Gamil Alhakimi, Oakville, CA;
Lisa H. Studnicki, Oakville, CA;
Jay F. Kunzler, Canandaigua, NY (US);
GL Chemtec Vision Inc., , CA;
Abstract
A dual reactivity crosslinking agent of formula I having at least two different reactive sites, and hydrogel materials prepared from at least two monomers with different rates of free-radical polymerization reactivity. The crosslinking agent includes at least one free-radical reactive site for vinyl-containing monomer and at least one free-radical reactive site for meth(acrylic)-containing monomer. The hydrogel materials are useful in the manufacture of biocompatible medical devices, for example, hydrogel materials having desirable physical properties useful as contact lens materials.