Patents by Inventor Stephen T. Dubas

Stephen T. Dubas 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).

  • Method of preparing free polyelectrolyte membranes
    Patent number: 7223327
    Abstract: A releaseable membrane structure for producing a free membrane containing a substrate, a release stratum on the substrate and a membrane stratum on the release stratum. The release stratum and the membrane stratum contain oppositely-charged polyelectrolytes that are associated. The oppositely-charged polyelectrolytes of the release stratum are selected to dissociate upon application of stimulus whereas those of the membrane stratum are selected to remain associated upon application of the stimulus. Thus, when the stimulus is applied the polyelectrolytes in release stratum dissociate and the membrane stratum is released from the substrate and is a free membrane.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: May 29, 2007
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Joseph B. Schlenoff, Stephen T. Dubas
  • Method of preparing free polyelectrolyte membranes
    Publication number: 20040149572
    Abstract: A releaseable membrane structure for producing a free membrane containing a substrate, a release stratum on the substrate and a membrane stratum on the release stratum. The release stratum and the membrane stratum contain oppositely-charged polyelectrolytes that are associated. The oppositely-charged polyelectrolytes of the release stratum are selected to dissociate upon application of stimulus whereas those of the membrane stratum are selected to remain associated upon application of the stimulus. Thus, when the stimulus is applied the polyelectrolytes in release stratum dissociate and the membrane stratum is released from the substrate and is a free membrane.
    Type: Application
    Filed: March 18, 2004
    Publication date: August 5, 2004
    Inventors: Joseph B. Schlenoff, Stephen T Dubas