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:
Sep. 02, 2025
Filed:
Sep. 25, 2019
Georgetown University, Washington, DC (US);
Kai Liu, Falls Church, VA (US);
Georgetown University, Washington, DC (US);
Abstract
A filtration system and method for removing sub-micron particulates and contaminants from a fluid flow with the use of ultralow density metal and coated metal foams that have nanometer to micron scale pores that can trap fluid borne particulates. Filters can use metal foams and coated metal foams alone or in tandem. The size and density of the pores in the foam can be adjusted with synthesis conditions. Foams with pore size gradients can be provided where different sized particulates will be trapped at different regions of the foams. The metal and coated metal foams can also act as catalysts or substrates for absorption or adsorption for separation of target particulates and gases from an effluent or gas stream. The foams may be charged with a voltage to function as an ionization grid to transfer charge to charge neutral particulates to facilitate collection.