Patent · US Expired

Gypsum-based building material

US7645527B2 · kind B2 · utility

2Cited by

4References

20Claims

0Family size

Assignee

Knauf Gips KG · DE

Inventors

Hans-Ulrich Hummel · Iphofen, DE
Georg Krämer · Ebermannstadt, DE
Hans-Rudolf Stössel · Iphofen, DE

Key dates

Filing date	Sep 13, 2004
Grant date	Jan 12, 2010
Priority date	—
Expiry date	Oct 13, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24273
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A gypsum-based building material containing from 1 to 25% by weight of zeolites.

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