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:
Jun. 02, 2026
Filed:
Apr. 13, 2021
University of Louisville Research Foundation, Inc., Louisville, KY (US);
Adem Technologies Inc, Louisville, KY (US);
Mahendra Sunkara, Louisville, KY (US);
Arjun Thapa, Louisville, KY (US);
Theodore Druffel, Louisville, KY (US);
Edward C Tackett, Louisville, KY (US);
Vivekanand Kumar, Louisville, KY (US);
Lukus Guhy, Louisville, KY (US);
Tu Nguyen, Louisville, KY (US);
University of Louisville Research Foundation, Inc., Louisville, KY (US);
Abstract
The present development is a nanofilter, i.e. a filter material that comprises inorganic nanowires impregnated into a non-woven polymer or cloth fabric material. The nanofilter comprises a fabric infiltrated with a nanowire powder slurry selected from anatase titania (TiO), zinc oxide (ZnO), silica, tin oxide, alumina (AlO), or combinations thereof. Exemplary fabrics include a non-woven polymer and a cotton fabric cloth. The nanowire powder slurry effectively produces a coating on the fabric. Optionally, the nanowires may be functionalized using nanoparticles and/or disinfecting salt particles. The infiltrated nanowires form a porous network with sub-micron scale openings and provide filtration of any airborne particles, liquid droplets and viruses including COVID 19. The nanofilter may be used in a variety of applications, such as a nanofilter respirator as described herein.