US PATENT SUBCLASS 585 / 253
.~.~ Isomerization

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

250  DF  ADDING HYDROGEN TO UNSATURATED BOND OF HYDROCARBON, I.E., HYDROGENATION {10}
251  DF  .~ With subsequent diverse conversion {2}
253.~.~ Isomerization

DEFINITION

Classification: 585/253

Isomerization:

(under subclass 251) Subject matter wherein the hydrogenated feedstock is treated to change its molecular configuration without a change in its molecular weight.

SEE OR SEARCH THIS CLASS, SUBCLASS:

371+, for isomerization by ring expansion or contraction to produce an alicyclic hydrocarbon.