Title:
Building board
United States Patent 2634208

Inventors:
Jack, Miscall
Rahr, Chester E.
Publication Date:
04/07/1953
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Assignee:
GREAT LAKES CARBON CORP
Primary Class:
162/171
Other Classes:
106/DIG.002, 106/DIG.001, 106/277, 106/282, 106/122, 162/159
International Classes:
C04B20/10; C04B24/36; C04B30/02; C04B20/00; C04B24/00; C04B30/00
US Patent References:
1978923Composition board
2388060Ceramic composition
2501698Thermal expansion and vesiculation process for siliceous materials
2501962Process for expanding earth materials
2542721Fire retardant waterproof coating