Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Edward Richard Harrington0
Jonathan M. Verhoff0
Date of Patent
August 8, 2017
Patent Application Number
14209510
Date Filed
March 13, 2014
Patent Citations Received
Patent Primary Examiner
Patent abstract
Roofing shingle layers, roofing shingles, and roofing systems having fire retardant properties are provided. In certain exemplary embodiments, the roofing shingle layers, roofing shingles, or roofing systems include an expandable fire retardant material. The expandable fire retardant material may comprise expandable graphite, ammonium polyphosphate, or a combination thereof.
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