A method for filtering air of about 1 to about 10 microns particles at a greater than 40% filtering efficiency is provided. The method includes providing an air filtering device comprising a base, a fan functionally attached to the base, an air filter releasably attached to the base, and a substantially air impermeable outer sleeve; and activating the device for at least about 20 minutes.
申请公布号
WO2014182986(A1)
申请公布日期
2014.11.13
申请号
WO2014US37425
申请日期
2014.05.09
申请人
THE PROCTER & GAMBLE COMPANY
发明人
GRUENBACHER, DANA, PAUL;SCHROECK, STEVEN, JAMES;LEON, JESSICA, ELIZABETH;DAL BO, PAOLO;SCHOBER, UWE