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:
Sep. 13, 2016
Filed:
Aug. 17, 2015
The Johns Hopkins University, Baltimore, MD (US);
Morgana M. Trexler, Baltimore, MD (US);
Jeffrey P. Maranchi, Clarksburg, MD (US);
Jennifer L. Breidenich, Atlanta, GA (US);
Xiomara Calderon-Colon, Laurel, MD (US);
Julia B. Patrone, Ellicott City, MD (US);
Jennifer H. Elisseeff, Baltimore, MD (US);
Marcia W. Patchan, Columbia, MD (US);
Jenna L. Graham, Columbia, MD (US);
Oliver D. Schein, Baltimore, 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 oxygen permeability, high biocompatibility, high tensile strength and desirable thermal stability. The present invention further provides a process for preparing a cellulose hydrogel comprising (i) a step of activating cellulose, in which the activating step comprises contacting the cellulose with a solvent to activate the cellulose for a time duration from about 2 hours to about 30 hours; (ii) substantially dissolving the activated cellulose to form a solution; and (iii) gelling the solution to form a gel, in which the gelling step comprises allowing the solution to gel in an environment comprising a relative humidity from about 30% to about 80% at 35° C.