US PATENT SUBCLASS 208 / 292
.~ With boron, phosphorus, arsenic, antimony or bismuth containing treating agent

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

177  DF  REFINING {23}
292.~ With boron, phosphorus, arsenic, antimony or bismuth containing treating agent

DEFINITION

Classification: 208/292

(under subclass 177) Processes wherein mineral oil is treated with boron, phosphorus, arsenic, antimony or bismuth or a compound thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

249, for processes of desulfurizing mineral oils with a Group

V metal or compound thereof.

279, for processes of refining mineral oils with phosphorus containing acids.

290+, for refining processes wherein organic compounds of boron, phosphorus, arsenic, antimony or bismuth are used.