US PATENT SUBCLASS 208 / 207
.~.~ Nitrogen containing 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}
207.~.~ Nitrogen containing compound

DEFINITION

Classification: 208/207

(under subclass 189) Processes wherein an added nitrogen containing compound is employed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

206, for sweetening processes wherein nitrogen containing treating agents are used in combination with an alkali metal hydroxide or carbonate.

236, for processes of removing sulfur from mineral oils using nitrogen containing treating agents.