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:
Jul. 15, 2025
Filed:
Apr. 09, 2020
Nanotek Instruments Group, Llc, Dayton, OH (US);
Aruna Zhamu, Springboro, OH (US);
Bor Z. Jang, Centerville, OH (US);
Global Graphene Group, Inc., Dayton, OH (US);
Abstract
Provided is filtration member for use in a filtration device, said filtration member comprising a layer of woven or nonwoven fabric having two primary surfaces and a layer of chemically functionalized graphite flakes deposited on at least one of the two primary surfaces or embedded in the layer of woven or nonwoven fabric, wherein said graphite flakes comprise chemical function contain 1%-50% by weight of a non-carbon element selected from O, N, H, F, Cl, Br, I, or a combination thereof. Also provided is a face mask comprising: (a) a mask body configured to cover at least wearer's mouth and nose; and (b) a fastener to hold the mask in place on the wearer's face; wherein the mask body includes (i) an air-permeable outer layer, (ii) an inner layer located on a wearer's side when the mask is worn, and (iii) the filtration member comprising graphite flakes.