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:
Oct. 28, 2014
Filed:
Aug. 03, 2011
Morgana M. Trexler, Baltimore, MD (US);
Jenna L. Graham, Columbia, MD (US);
Jennifer L. Breidenich, Atlanta, GA (US);
Jeffrey P. Maranchi, Clarksburg, MD (US);
Julia B. Patrone, Laurel, MD (US);
Marcia W. Patchan, Columbia, MD (US);
Jennifer H. Elisseeff, Baltimore, MD (US);
Xiomara Calderon-colon, Laurel, MD (US);
Morgana M. Trexler, Baltimore, MD (US);
Jenna L. Graham, Columbia, MD (US);
Jennifer L. Breidenich, Atlanta, GA (US);
Jeffrey P. Maranchi, Clarksburg, MD (US);
Julia B. Patrone, Laurel, MD (US);
Marcia W. Patchan, Columbia, MD (US);
Jennifer H. Elisseeff, Baltimore, MD (US);
Xiomara Calderon-Colon, Laurel, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
Abstract
The present invention provides cellulose hydrogels having one or more of the following properties: high water content, high transparency, high permeability, high biocompatibility, high tensile strength and an optimal thickness. The present invention further provides a process for preparing a cellulose hydrogel comprising: (i) contacting cellulose with a solvent to activate the cellulose; (ii) optionally removing the solvent from the activated cellulose; (iii) substantially dissolving the activated cellulose to form a solution; (iv) allowing the solution to gel; and optionally (v) drying the gel and rehydrating the gel. The cellulose hydrogel can have many uses, including uses as contact lenses.