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:
Oct. 07, 2025
Filed:
May. 19, 2025
Lunar Helium-3 Mining, Llc, Scottsdale, AZ (US);
Chris Salvino, Scottsdale, AZ (US);
Drew F Dejarnette, San Diego, CA (US);
Paul A Beatty, Fort Collins, CO (US);
Andrew Dummer, Chapel Hill, NC (US);
LUNAR HELIUM-3 MINING, LLC, Scottsdale, AZ (US);
Abstract
Described is a particle filtration system that protects a gas segregation region from lunar regolith dust by using an electrostatic filter arrangement. An ionizing element (screen or bar, for example) generates one or more electron curtains that charge neutral dust particles, which are then drawn to paired conductive plates via electrostatic attraction. The system operates efficiently in vacuum conditions, leveraging field emission from sharp triangular apexes of the ionizing element/s to create high-density electron streams. A final-stage ULPA mesh filter captures any remaining particles, ensuring only gas enters the gas segregation region. This design enhances dust mitigation, improves gas collection efficiency, and protects sensitive components in harsh extraterrestrial environments.