Inventor
MCCULLOUGH NICOLE V
US4 patents
Patents
4 patentsUS6584976B2Jul 1, 2003
Face mask that has a filtered exhalation valve
3M INNOVATIVE PROPERTIES CO166 citations97
US6460539B1Oct 8, 2002
Respirator that includes an integral filter element, an exhalation valve, and impactor element
3M INNOVATIVE PROPERTIES CO185 citations97
US6805124B2Oct 19, 2004
Face mask that has a filtered exhalation valve
3M INNOVATIVE PROPERTIES CO32 citations91
US6026511AFeb 22, 2000
Protective article having a transparent shield
3M INNOVATIVE PROPERTIES CO54 citations91