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:
Feb. 07, 1978
Filed:
Aug. 29, 1975
Friedrich Hinsche, Leverkusen, DT;
Kurt Schaupp, Cologne, DT;
Bayer Aktiengesellschaft, Leverkusen, DT;
Abstract
In the production of a floor topping by the flow method, comprising providing a water-absorbing layer on a floor to be topped, pouring a free-flowing mass comprising an inorganic binder and water onto said water-absorbing layer whereby said mass forms a level floor topping, and allowing said mass to harden, the improvement which comprises employing as said water-absorbing layer a strong porous open-cell material. The open-cell material which serves as a water absorptive underlay preferably comprises at least one of anhydrite, gypsum, cement and lime. Preferably it is formed in place by casting a foamed mass comprising an aqueous suspension of gypsum, an aluminum salt, hydrogen peroxide and a manganese compound.