Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Fibrous filtration face mask having a new unidirectional fluid valve

Fibrous filtration face mask having a new unidirectional fluid valve

US Patent 7493900 · Granted Feb 24, 2009

Estimated economic value: $19,869,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Operational file management and storage2022
Operational file management and storage2021
Method of co-extruding, co-extrusion die, and extruded articles made therefrom2016
Loading remote binaries onto a write-protected device2015
Loading remote binaries onto a write-protected device2015
Electret webs with charge-enhancing additives2014
Establishing electronically authenticated internet voice connections2014
Electret webs with charge-enhancing additives2013
Easel stand mountable display board2013
Method of making electret articles based on zeta potential2010
Fibrous filtration face mask having a new unidirectional fluid valve2008
Fibrous filtration face mask having a new unidirectional fluid valve2008