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:
Sep. 24, 1996
Filed:
Aug. 29, 1994
Daniel D Imeokparia, Pickerington, OH (US);
Creston D Shmidt, Nashport, OH (US);
Kyung W Suh, Granville, OH (US);
Michael J Ennis, Reynoldsburg, OH (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Disclosed is a roofing system for a structure such as a building. The system comprises a roof deck; a plurality of panels of an extruded alkenyl aromatic polymer foam above and adjacent the deck; and a substantially waterproof membrane above and adjacent to the foam. The foam has from about 30 to about 80 percent open cell content. The foam provides excellent mechanical support for the membrane, and is water resistant. The foam further has a high heat distortion temperature, and is substantially free of distortion at high service temperatures encountered in roofing systems. Further disclosed is a recovery roofing system employing the above foam. Further disclosed are processes for constructing a new roofing system and a recovery roofing system.