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:
Dec. 09, 2025
Filed:
Oct. 06, 2023
University of Maryland, College Park, College Park, MD (US);
Quinton Burke, Fallston, MD (US);
Kevin Aroom, Silver Spring, MD (US);
Martha Wang, Fulton, MD (US);
UNIVERSITY OF MARYLAND, COLLEGE PARK, College Park, MD (US);
Abstract
A system for the evaluation of respirator materials includes an aerosolized particle source configured to selectively provide aerosolized particles, a mixing chamber including a drying apparatus, a vacuum source configured to control airflow, an airtight respirator chamber for evaluating respirator materials, a processor, and a memory. The airtight respirator chamber includes a first sub-chamber, a second sub-chamber, a first sensor and a second sensor. The memory includes instructions stored thereon, which when executed by the processor cause the system to: obtain the first signal and the second signal; determine an aerosol filtration efficiency based on a difference between the first signal and second signal; compare the aerosol filtration efficiency to a predetermined threshold; and provide an indication whether the aerosol filtration efficiency is above or below the predetermined threshold.