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Method of drying frac sand without heat
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Patent number 11,092,380
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Issue date Aug 17, 2021
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R.T.D. Enterprises
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Robert E. Kibel
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B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
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Blender
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Patent number 10,646,842
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Issue date May 12, 2020
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Vervant Limited
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James Joseph O'Callaghan
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3837092
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Patent number 3,837,092
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Issue date Sep 24, 1974
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B22 - CASTING POWDER METALLURGY
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3749549
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Patent number 3,749,549
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Issue date Jul 31, 1973
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F26 - DRYING
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3044726
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Patent number 3,044,726
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Issue date Jul 17, 1962
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2619738
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Patent number 2,619,738
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Issue date Dec 2, 1952
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F26 - DRYING
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2552254
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Patent number 2,552,254
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Issue date May 8, 1951
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F26 - DRYING
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2535605
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Patent number 2,535,605
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Issue date Dec 26, 1950
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B22 - CASTING POWDER METALLURGY
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2501924
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Patent number 2,501,924
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Issue date Mar 28, 1950
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F26 - DRYING
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2339370
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Patent number 2,339,370
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Issue date Jan 18, 1944
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F26 - DRYING
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2219634
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Patent number 2,219,634
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Issue date Oct 29, 1940
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F26 - DRYING
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2177404
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Patent number 2,177,404
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Issue date Oct 24, 1939
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F26 - DRYING
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2057610
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Patent number 2,057,610
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Issue date Oct 13, 1936
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F26 - DRYING
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2008351
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Patent number 2,008,351
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Issue date Jul 16, 1935
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F26 - DRYING
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1887799
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Patent number 1,887,799
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Issue date Nov 15, 1932
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F26 - DRYING
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1796911
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Patent number 1,796,911
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Issue date Mar 17, 1931
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F26 - DRYING
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1787280
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Patent number 1,787,280
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Issue date Dec 30, 1930
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F26 - DRYING
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1781484
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Patent number 1,781,484
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Issue date Nov 11, 1930
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F26 - DRYING
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1773984
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Patent number 1,773,984
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Issue date Aug 26, 1930
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F26 - DRYING
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1726505
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Patent number 1,726,505
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Issue date Aug 27, 1929
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F26 - DRYING
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1719259
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Patent number 1,719,259
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Issue date Jul 2, 1929
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F26 - DRYING