Back to results
US 4,373,992 AGranted
Non-asbestos flooring felt containing particulate inorganic filler, a mixture of fibers and a binder
AssigneeTarkett Inc.
InventorAlfredo A. Bondoc
Life of this patent
Estimating the term…
Abstract
Flooring felt containing glass fibers, cellulosic fibers, synthetic fibers, particulate inorganic filler, latex binder and calcium hydroxide.
Claims15
Sheet type felt comprising on a dry basis;
- (a) between about 1 and about 10 wt. % glass fibers;
- (b) between about 3 and about 25 wt % cellulosic fibers;
- (c) between about 3 and about 20 wt % synthetic organic fibers;
- (d) between about 3 and about 70 wt % particulate inorganic filler;
- (e) between about 10 and about 30 wt % latex binder;
- (f) between about 3 and about 80 wt % calcium hydroxide;
- and
- (g) between about 0.1 and about 10 pounds polymeric flocculating agent per ton of felt.
5 more elements
Dependencies are inferred from the claim text.