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:
Nov. 15, 2011
Filed:
Sep. 16, 2008
D. Tyler Mcquade, Tallahassee, FL (US);
Muris Kobaslija, Somerville, MA (US);
D. Tyler McQuade, Tallahassee, FL (US);
Muris Kobaslija, Somerville, MA (US);
Cornell University, Ithaca, NY (US);
Abstract
A removable, colored X-alginate coating composition includes an aqueous solution of sodium alginate including a colorant and an aqueous solution containing divalent cations. The applied coating composition may be in the form of a thin film coating having a thickness of 10 nanometers or more and may include more than a single layer. The X-alginate coating composition is substantially removable from the application surface on-demand using a suitable chelator. A reversible, colored X-alginate coating system includes a colored X-alginate coating composition and a colored X-alginate coating composition remover. The remover may be a chelator. A method for reversibly coloring a surface includes applying an aqueous solution of sodium alginate including a colorant onto the surface and applying an aqueous solution containing divalent ions onto the surface. Water may subsequently be applied to the coated surface as a final washing step.