US PATENT SUBCLASS 208 / 264
.~ With hydrogen


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

177  DF  REFINING {23}
264.~ With hydrogen


DEFINITION

Classification: 208/264

(under subclass 177) Processes wherein the mineral oil is treated with added hydrogen.

(1) Note. The hydrogen may be added as a free gas or a hydrogen rich material may be used under such conditions as to generate or liberate hydrogen (hydrogen donor processes).

SEE OR SEARCH THIS CLASS, SUBCLASS:

89, for processes of refining mineral oil with hydrogen combined with chemical conversion of the oil.

209+, for processes of desulfurizing mineral oils wherein hydrogen is used.