Nonwoven materials comprising 0.5 to 1.2 decitex cardable polyolefin fibers and having liquid strike through resistance as well as air permeability

Granted: Jul 9, 1996 Filed: Oct 29, 1993

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.