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:
Dec. 17, 2013
Filed:
Dec. 08, 2006
Huagang Zhang, Yucaipa, CA (US);
Hamid Hojaji, Claremont, CA (US);
Shannon Marie Labernik, Rancho Cucamonga, CA (US);
David L. Melmeth, Fontana, CA (US);
Thinh Pham, Rancho Cucamonga, CA (US);
James A. Mcfarlane, Sydney, AU;
Huagang Zhang, Yucaipa, CA (US);
Hamid Hojaji, Claremont, CA (US);
Shannon Marie Labernik, Rancho Cucamonga, CA (US);
David L. Melmeth, Fontana, CA (US);
Thinh Pham, Rancho Cucamonga, CA (US);
James A. McFarlane, Sydney, AU;
James Hardie Technology Limited, Dublin, IE;
Abstract
A low density material and a method for preparing a low-density material and precursor for forming a low-density material are provided. An aqueous mixture of inorganic primary component and a blowing agent is formed, the mixture is dried and optionally ground to form an expandable precursor. Such a precursor is then fired with activation of the blowing agent being controlled such that it is activated within a predetermined optimal temperature range. The firing conditions are also controlled to provide a low density sphere containing a heterogeneous sphere wall structure comprising a combination of amorphous glass and a crystalline phase or gas phase or both.