Sheet type felt
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 24, 1985
Grant Date -
N/A
app pub date -
Apr 2, 1984
filing date -
Apr 2, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Sheet type felt material comprising 5-20 wt % glass fibers, 40-80 wt % cellulose fibers, 5-25 % binder and 3-20 wt % asphalt. The felt is made on conventional felt making equipment and may be used as siding or roofing underlayment or as facer for foam insulating boards.
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Cited Art Landscape
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