US Patent 7807594 Fire resistant glass fiber
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Patent abstract
A glass fiber composition comprises about 33-47 weight % SiO2; about 18-28 weight % Al2O3; about 5-15 weight % Fe2O3; greater than or equal to about 2 weight % and less than 10 weight % R2O; about 8-30 weight % CaO; and less than 4 weight % MgO; wherein R2O represents alkali metal oxides. Preferably, the glass fiber composition has a liquidus temperature of less than 2350° F.; and a viscosity at a liquidus temperature of the glass fiber composition of greater than 500 poise; and fire resistant glass fiber formed from the glass fiber composition has a biodissolution rate of greater than 50 ng/cm2/hr.
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Patent Inventor Names
Elam A. Leed0
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US Patent 07807594 Fire resistant glass fiber US Patent 7807594 Fire resistant glass fiber
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Patent Number
07807594
Patent Number
7807594
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US Patent 07807594 Fire resistant glass fiber
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Is a
Patent jurisdiction
Patent number
07807594
Date of patent
October 5, 2010
Patent application number
11893192
Date Filed
August 15, 2007
Patent primary examiner
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