US PATENT SUBCLASS 208 / 282
.~.~ Organic acid

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

177  DF  REFINING {23}
265  DF  .~ With acids {4}
282.~.~ Organic acid

DEFINITION

Classification: 208/282

(under subclass 265) Processes wherein an organic acid is employed.

(1) Note. This subclass contains, for example, processes of treating mineral oils with lower aliphatic acids, naphthenic acid, salicylic acid, et.