Patents by Inventor Oliver D. Schein

Oliver D. Schein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cellulose hydrogel compositions and contact lenses for corneal applications
    Patent number: 9441080
    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.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: September 13, 2016
    Assignee: The Johns Hopkins University
    Inventors: Morgana M. Trexler, Jeffrey P. Maranchi, Jennifer L. Breidenich, Xiomara Calderon-Colon, Julia B. Patrone, Jennifer H. Elisseeff, Marcia W. Patchan, Jenna L. Graham, Oliver D. Schein
  • CELLULOSE HYDROGEL COMPOSITIONS AND CONTACT LENSES FOR CORNEAL APPLICATIONS
    Publication number: 20150368408
    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.
    Type: Application
    Filed: August 17, 2015
    Publication date: December 24, 2015
    Inventors: Morgana M. Trexler, Jeffrey P. Maranchi, Jennifer L. Breidenich, Xiomara Calderon-Colon, Julia B. Patrone, Jennifer H. Elisseeff, Marcia W. Patchan, Jenna L. Graham, Oliver D. Schein