Stock material or miscellaneous articles – Structurally defined web or sheet – Physical dimension specified
Reexamination Certificate
2008-05-19
2010-06-29
Salvatore, Lynda (Department: 1794)
Stock material or miscellaneous articles
Structurally defined web or sheet
Physical dimension specified
C428S299700, C428S332000, C428S212000, C442S333000, C264S171210, C264S172110, C264S211120
Reexamination Certificate
active
07744989
ABSTRACT:
This invention relates to improved plexifilamentary sheet material useful in protective apparel and filtration media, which material is comprised of substantially continuous polyethylene plexifilamentary fiber strands and has a Frazier Permeability, normalized to 1.0 oz/yd2basis weight, of at least 2 cfm/ft2.
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Marin Robert Anthony
Marshall Larry R.
O'Rourke Barbara K.
E. I. du Pont de Nemours and Company
Salvatore Lynda
Woodcock & Washburn LLP
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