Patent · US Active

Method for making a lightweight gypsum composition with internally generated foam and products made from same

US10737981B2 · kind B2 · utility

2Cited by

37References

13Claims

0Family size

Assignee

UNITED STATES GYPSUM COMPANY · US

Inventors

Samar Emami · Chicago, US
Salvatore C. Immordino · Pleasant Prairie, US
Robert H. Negri · Lake Villa, US
David D. Pelot · Chicago, US
Jeffrey F. Grussing · Pleasant Prairie, US
Juan Carlos Ruiz Castañeda · El Control, MX
Christopher R. Nelson · Grayslake, US
John J. Roxburgh · Chicago, US
Srinivas Veeramasuneni · Round Lake, US

Key dates

Filing date	Sep 21, 2017
Grant date	Aug 11, 2020
Priority date	—
Expiry date	Jan 25, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2111/00698
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A gypsum-based composition of calcium sulfate hemihydrate with (a) alum and calcium carbonate and/or (b) zeolite and sodium percarbonate for making foamed gypsum slurry. A method to make foamed gypsum slurry from the composition. A method to make foamed gypsum product from the composition. A cavity wall having a cavity filled with the foamed gypsum product.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.