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Filtration of oil
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Patent number 4,522,729
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Issue date Jun 11, 1985
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Phillips Petroleum Company
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Donald C. Tabler
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Reclaiming used lubricating oil
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Patent number 4,502,948
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Issue date Mar 5, 1985
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Phillips Petroleum Company
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Donald C. Tabler
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Hydrogenation catalysts
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Patent number 4,503,249
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Issue date Mar 5, 1985
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Phillips Petroleum Company
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Gerhard P. Nowack
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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De-ashing lubricating oils
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Patent number 4,420,389
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Issue date Dec 13, 1983
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Phillips Petroleum Company
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Alden E. Beckworth
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Hydrogenation catalysts
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Patent number 4,401,640
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Issue date Aug 30, 1983
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Phillips Petroleum Company
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Gerhard P. Nowack
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C01 - INORGANIC CHEMISTRY
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Hydrogenation catalyst
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Patent number 4,394,298
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Issue date Jul 19, 1983
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Phillips Petroleum Company
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Gerhard P. Nowack
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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De-ashing lubricating oils
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Patent number 4,265,733
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Issue date May 5, 1981
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Phillips Petroleum Company
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Donald C. Tabler
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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De-ashing lubricating oils
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Patent number 4,247,389
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Issue date Jan 27, 1981
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Phillips Petroleum Company
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Marvin M. Johnson
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Reclaiming used lubricating oils
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Patent number 4,151,072
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Issue date Apr 24, 1979
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Phillips Petroleum Company
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Gerhard P. Nowack
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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