Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael J. Hubbard0
John B. Letts0
Chunhua Yao0
Date of Patent
February 27, 2024
0Patent Application Number
175921780
Date Filed
February 3, 2022
0Patent Citations
Patent Primary Examiner
Patent abstract
A construction board includes a foam body having first and second planar surfaces, said foam body including a polyisocyanurate foam matrix defining a plurality of closed cells, said closed cells being at least substantially devoid of hydrocarbon blowing agents, and said foam body being characterized by a density, pursuant to ASTM C303, of at least 2.5 lbs/ft
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