06572697 is referenced by 155 patents and cites 15 patents.

This invention relates to a formulation with the addition of low density additives of volcanic ash, hollow ceramic microspheres or a combination of microspheres and volcanic ash or other low density additives into cementitious cellulose fiber reinforced building materials. This formulation is advantageously lightweight or low density compared as compared to current fiber cement products without the increased moisture expansion and freeze-thaw degradation usually associated with the addition of lightweight inorganic materials to fiber cement mixes. The low density additives also give the material improved thermal dimensional stability.

Title
Fiber cement building materials with low density additives
Application Number
9/803456
Publication Number
6572697 (B2)
Application Date
March 9, 2001
Publication Date
June 3, 2003
Inventor
Dean M Seligman
Mission Viejo
CA, US
David L Melmeth
Upland
CA, US
Brian P Sloane
Old Toongabbie
US
Kalynne H Paradis
Rancho Cucamonga
CA, US
James A Gleeson
Alta Loma
CA, US
Agent
Knobbe Martens Olson & Bear
US
Assignee
James Hardie Research
US
IPC
C04B 14/14
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