Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Reexamination Certificate
2006-09-11
2010-10-12
Chilcot, Jr., Richard E (Department: 3635)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
C428S318800, C428S138000, C428S703000, C052S410000, C052S309100, C052S478000, C052S796100
Reexamination Certificate
active
07811663
ABSTRACT:
A prefabricated cover board has a high-density polymer or predominantly polymer material core layer having a density between 4 lbs/ft3and 25 lbs/ft3. A prefabricated roofing panel composite includes the cover board and an insulation board that has a low-density polymer or predominantly polymer material foam core layer preferably having a density less than 2.5 lbs/ft3. The cover board may have a waterproofing membrane forming the top major surface of the cover board. When making the roofing panel composite, the low-density foam core layer of the insulation board may be formed with the high-density core layer of the cover board being currently or subsequently formed over and bonded to a top major surface of the low-density foam core layer in the same operation or preformed insulation boards may be fed into a production line with the high-density core layer of the cover board being formed over and bonded to top major surfaces of the low-density foam core layers of the insulation boards.
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Burdic Brad C.
Griffin Christopher J.
Hazy Joel Evan
Paradis Duane
Swann Raymond C.
Chilcot, Jr. Richard E
Johns Manville
Nguyen Chi
Touslee Robert D.
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