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John E. Boysen
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Laramie, WY, US
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last 30 patents
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Patent Grant
Inclined fluidized bed system for drying fine coal
Patent number
5,087,269
Issue date
Feb 11, 1992
Western Research Institute
Chang Y. Cha
F26 - DRYING
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Patent Grant
Process for removing heavy metal compounds from heavy crude oil
Patent number
5,041,209
Issue date
Aug 20, 1991
Western Research Institute
Chang Y. Cha
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...