Paper making and fiber liberation – Processes and products – Multi-layer waterlaid webs or sheets
Reexamination Certificate
2008-07-15
2008-07-15
Fortuna, José A (Department: 1791)
Paper making and fiber liberation
Processes and products
Multi-layer waterlaid webs or sheets
C162S103000, C162S128000, C162S132000, C162S138000, C162S205000, C162S206000, C162S207000, C162S181600
Reexamination Certificate
active
07399379
ABSTRACT:
The present invention relates to a sheet structure for electrical insulation or flame resistance comprising a barrier ply having a mica-rich face and a mica-poor face and a reinforcing ply containing a saturable backing layer attached to the mica-poor face of the barrier ply.
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Bascom Laurence N.
Levit Mikhail R.
E.I. Du Pont de Nemours and Company
Fortuna José A
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