The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2019
Filed:
Aug. 25, 2017
Johns Manville, Denver, CO (US);
Zhihua Guo, Centennial, CO (US);
Gautam Sharma, Cleveland, TN (US);
Souvik Nandi, Highlands Ranch, CO (US);
Jawed Asrar, Englewood, CO (US);
Albert G Dietz, III, Davidson, NC (US);
Johns Manville, Denver, CO (US);
Abstract
According to one embodiment, a nonwoven fiber mat includes between 10% and 50% by weight of a plurality of first glass fibers having an average diameter of less than 5 μm and between 50% and 90% by weight of a plurality of second glass fibers having an average diameter of greater than 6 μm. The nonwoven fiber mat also includes an acid resistant binder that binds the first and second glass fibers together. The nonwoven fiber mat has an average pore size of between 1 and 100 μm and exhibits an air permeability of below 100 cubic feet per minute per square foot (cfm/ft) as measured by the Frazier test at 125 Pa according to ASTM Standard Method D737.