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Demetallation catalyst
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Patent number 5,223,472
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Issue date Jun 29, 1993
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Union Oil Company of California
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Howard D. Simpson
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Method for producing needle coke
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Patent number 5,007,987
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Issue date Apr 16, 1991
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Union Oil Company of California
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Michael J. Block
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Method for producing needle coke
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Patent number 4,545,859
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Issue date Oct 8, 1985
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Union Oil Company of California
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Arnold E. Kelley
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Method for producing needle coke
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Patent number 4,521,278
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Issue date Jun 4, 1985
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Union Oil Company of California
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Arnold E. Kelley
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Manufacture of low-sulfur needle coke
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Patent number 4,075,084
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Issue date Feb 21, 1978
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Union Oil Company of California
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Milan Skripek
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...