US PATENT SUBCLASS 208 / 144
.~.~.~ Feed of specific composition

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

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
142  DF  .~ Hydrogenation (saturation) {1}
143  DF  .~.~ Catalytic {1}
144.~.~.~ Feed of specific composition {1}
145  DF  .~.~.~.~> With added source of hydrogen (includes hydrogen donor)

DEFINITION

Classification: 208/144

(under subclass 143) Processes directed to the catalytic hydrogenation of a specifically identified mineral oil.

(1) Note. To be classifiable in this subclass the process must include the treatment of a mineral oil identified by some definite chemical or physical property such as the boiling range, specific gravity, etc. Merely naming the oil as paraffinic, olefinic, et., is not sufficient, per se, to identify the mineral oil for this subclass.