US PATENT SUBCLASS 208 / 265
.~ With acids
Current as of:
June, 1999
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208 /
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MINERAL OILS: PROCESSES AND PRODUCTS
177
DF
REFINING
{23}
265
.~ With acids {4}
266
DF
.~.~
> Sulfuric acid {7}
279
DF
.~.~
> Phosphorus containing acid
280
DF
.~.~
> Halogen containing acid {1}
282
DF
.~.~
> Organic acid
DEFINITION
Classification: 208/265
(under subclass 177) Processes wherein mineral oil is treated with an added acid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
90, for processes of acid refining mineral oil combined with a subsequent chemical conversion.
98, for processes of chemical conversion of a mineral oil combined with acid refining a product thereof.
219+, for processes of desulfurizing mineral oils with acids.
252, for processes of removing metal contaminants with acids.
256, for processes of removing gums or gum formers with acids.
