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:
Feb. 06, 2024
Filed:
Mar. 13, 2020
Regents of the University of Minnesota, Minneapolis, MN (US);
Rongsheng Ruan, Arden Hills, MN (US);
Yanling Cheng, St. Paul, MN (US);
Nan Zhou, St. Paul, MN (US);
Dongjie Chen, St. Paul, MN (US);
Peng Peng, Lauderdale, MN (US);
Yunpu Wang, St. Paul, MN (US);
Renchuan Zhang, St. Paul, MN (US);
Charles Schiappacasse, Maplewood, MN (US);
Ling Chen, Roseville, MN (US);
Regents of the University of Minnesota, Minneapolis, MN (US);
Abstract
Disinfecting particulate material includes combining the particulate material with a photocatalyst to yield a mixture, irradiating the mixture for a length of time with pulses from a light source having broadband emission spectrum between 190 nm-1100 nm to yield an irradiated mixture, and separating the photocatalyst from the disinfected mixture to yield the disinfected particulate matter. Irradiating the mixture inactivates microorganisms in the mixture to yield a disinfected mixture. A system for disinfecting particulate material includes a pulsed light source having a broadband emission spectrum in a range between about 190 nm and about 1100 nm, a chamber defining a cavity optically coupled to the pulsed light source, a humidifier, a fan, and one or more sensors. The chamber includes a conveyor configured to accept the particulate material and arranged such that the pulses emitted by the pulsed light source irradiate the particulate material on the conveyor.