US PATENT SUBCLASS 208 / 197
.~.~ With lead compounds

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

177  DF  REFINING {23}
189  DF  .~ Sweetening {6}
197.~.~ With lead compounds {2}
198  DF  .~.~.~> Lead sulfide
199  DF  .~.~.~> Sodium plumbite {2}

DEFINITION

Classification: 208/197

(under subclass 189) Processes wherein an added lead compound is employed.

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249, for processes of removing sulfur using lead compound.

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252, Compositions,

185, for compositions containing plumbiferous sulfur bindant agents which may be used in processes classified in this subclass (197).