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Separation of cenospheres from fly ash
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Patent number 8,520,210
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Issue date Aug 27, 2013
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Wisconsin Electric Power Company
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Bruce W. Ramme
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Separation of cenospheres from fly ash
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Patent number 8,074,804
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Issue date Dec 13, 2011
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Wisconsin Electric Power Company
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Bruce W. Ramme
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Metal-coated hollow microspheres
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Patent number 4,621,024
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Issue date Nov 4, 1986
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Paper Applications International, Inc.
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Frederick A. Wright
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3782985
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Patent number 3,782,985
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Issue date Jan 1, 1974
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3669701
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Patent number 3,669,701
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Issue date Jun 13, 1972
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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2691598
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Patent number 2,691,598
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Issue date Oct 12, 1954
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES