US PATENT SUBCLASS 208 / 249
.~.~ With Group IV, V, VII metal or compound

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

177  DF  REFINING {23}
208 R  DF  .~ Sulfur removal (free or combined sulfur) {17}
249.~.~ With Group IV, V, VII metal or compound

DEFINITION

Classification: 208/249

(under subclass 208) Processes wherein the treating agent comprises a Group IV, V, VII metal (Ti, Zr, Hf, V, Nb, Ta, Mn, Tc, Re, Ge, Sn, Pb, As, Sb or Bi) or compounds thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

292, for other refining processes employing arsenic, antimony or bismuth containing agents.

295, for other refining processes wherein Group IV, V or VII metal compounds are used.