Patent · US Active

Structural fiber cement building materials

US8209927B2 · kind B2 · utility

5Cited by

361References

7Claims

0Family size

Assignee

James Hardie Technology Limited · IE

Inventors

John Sydney Cottier · Sydney, AU
December Cowen · Rancho Cucamonga, US
Remi Dunoyer · Sydney, AU
Steven Alfred Duselis · Parramatta, AU
James Gleeson · Sydney, AU
Amitabha Kumar · Shadnagar, IN

Key dates

Filing date	Dec 20, 2007
Grant date	Jul 3, 2012
Priority date	—
Expiry date	Jul 5, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31504
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A structural fiber cement sheet containing cementitious matrix and reinforcing cellulose fibers distributed throughout the matrix having a dry density less than 1.25 g/cm3, a thickness less than 0.7500 in, and able to withstand uniform loads of 200 psf or greater according to test method of Section 6.4.2.4 of PS2 and with a deflection of less than 0.067 inches at 60 psf when spaced on a span of 24 inches or less on center.

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