US Patent 11649628 Area separation firewall system
Patent 11649628 was granted and assigned to Eagle Materials on May, 2023 by the United States Patent and Trademark Office.
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Patent Inventor Names
Robert Ek0
Edits on 17 May, 2023
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US Patent 11649628 Area separation firewall system
Article
A firewall includes wallboard arranged in three or more layers. The wallboard may include gypsum, fiber glass, and/or vermiculite. The firewall may be reinforced with fasteners, such as laminating screws, affixing the layers of wallboard to one another. The firewall may be incorporated into an area separation wall such that the area separation wall satisfies the standards of ASTM E119 or UL 263.
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Patent Applicant
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Patent Jurisdiction
Patent Number
116496280
Date of Patent
May 16, 2023
0Patent Application Number
176498690
Date Filed
February 3, 2022
0Patent Citations
Patent Primary Examiner
CPC Code
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