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. 20, 1998
Filed:
May. 16, 1997
Applicant:
Inventor:
Charles E Cornwell, Alexandria, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
106678 ; 106679 ; 106680 ; 106681 ; 106682 ; 106675 ; 106705 ; 106719 ; 106726 ; 106122 ; 106D / ; 106676 ; 106709 ; 252 62 ; 264 41 ; 264 453 ; 264 50 ; 264 51 ;
Abstract
The invention relates to an improved sound absorbing cementitious composition and method of making involving a preformed foam solution made from a surfactant, such as an ammonium salt of a sulfated linear alcohol ethoxylate surfactant, preblended with water at a dilution ratio in a range of water to surfactant of from about 40:1 to 10:1. Thereafter, the preformed foam solution is combined with components including cement(s), aggregate(s), water and optional additives. The composition provides for an open cellular surface capable of absorbing sound.