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:
Oct. 05, 1993
Filed:
Jul. 05, 1991
Charles E Cornwell, Alexandria, VA (US);
Other;
Abstract
A foamed cellular cementitious composition useful for sound absorbing, thermal insulation and fire proofing is described. The cementitious composition is produced utilizing a mineral cement, an aggregate, water, and a stabilized foaming composition which includes at least one water-soluble film forming agent, and at least one foaming agent. The stabilized foaming composition provides air to the cementitious composition in an amount substantially in excess of that used in conventional air entrainment of cements. The film forming agent is preferably a resin emulsion and the foaming agent is preferably a nonionic surfactant, anionic surfactant or mixture thereof. The cementitious compositions have a density which is substantially lower than the density of a composition composed of mineral cement and aggregate per se.