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:
Jun. 29, 1976
Filed:
Aug. 28, 1974
Joseph W Schneller, Williamsville, NY (US);
Duane C Bennett, Eggertsville, NY (US);
George P Matiacio, Cheektowaga, NY (US);
National Gypsum Company, Buffalo, NY (US);
Abstract
Paper-covered gypsum wallboard of increased racking resistance which has been strengthened by impregnation completely through the thickness of the cover paper, at least throughout certain critical areas, by coating and subsequent absorption thereinto of water-free polymeric solutions. A most significant improvement results from impregnation thereinto of a moisture-curing isocyanate resin, preferably a semiprepolymer of a polyisocyanate and a polyol in combination with a viscosity reducing solvent, such as mineral spirits or xylene, and a catalyst. Improved mobile home walls are formed with the impregnated areas of gypsum board back face paper disposed over and adhered to framing members with glue or the like.