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:
Apr. 26, 2022
Filed:
Feb. 26, 2020
Portland State University, Portland, OR (US);
Tami Lasseter Clare, Portland, OR (US);
Capri Price, Portland, OR (US);
Portland State University, Portland, OR (US);
Abstract
A method for using hydrogels to detect metal ions, including transition metal ions, comprises contacting the hydrogel in any order, with a sample potentially containing metal ions, and a solution comprising a fluorescent dye, nanoparticle, colorimetric tag, or combination thereof. The presence of metal ions in the sample may be detected by one or more suitable techniques, such as determining the color, conductivity, Raman, infrared spectrum, and/or size and/or mass change of the hydrogel. The method may be useful for detecting corrosion and/or failure of protective coating of metal structures including outdoor sculptures, building, bridges, ships, and the like.