5 results for “Owens-Illinois”
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Patent · January 11, 1944
Causticizing of Waste Magnesia Products (US Patent 2,338,886, 1944)
…It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to basic magnesium carbonate compositions of the type suitable for insulating purposes in the form of pipe coverings…
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Patent · October 7, 1947
Magnesia Insulation (US Patent 2,428,555, 1947)
…1943. It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to the manufacture of magnesia insulation, and is particularly directed to improvements in method and apparatus whereby…
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Patent · May 9, 1944
Manufacture of Structural Shapes and Resultant Product (US Patent 2,348,614, 1944)
…1942. It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to the manufacture of fireproof sheets and shapes adapted for building construction, and is particularly concerned with…
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Patent · February 6, 1945
Molding and Curing Self-Setting Magnesia (US Patent 2,368,975, 1945)
…1942. It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to magnesia insulation, and is particularly directed to a method of mold ing and curing magnesia insulation…
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Patent · January 7, 1947 · page 3
Molded Magnesia Insulation (US Patent 2,413,958, 1947)
In the document: …The molded article or block is then removed from the noai and subsequent completion of the setting opera tion is effected in the usual air drying Owen at a temperature within the range of 170 F…