US PATENT SUBCLASS 208 / 194
.~.~.~.~ Separation or recovery of copper compound

Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

177  DF  REFINING {23}
189  DF  .~ Sweetening {6}
191  DF  .~.~ With copper compounds {3}
193  DF  .~.~.~ With subsequent treatment of the sweet oil {1}
194.~.~.~.~ Separation or recovery of copper compound

DEFINITION

Classification: 208/194

(under subclass 193) Processes wherein the subsequent treatment includes a specifically defined procedure for separation and recovery of the copper containing sweetening agent from the sweetened oil.

(1) Note. Recovery of the copper containing sweetening agent when recited by name only is not included as a subsequent treatment of the sweetened oil.