US PATENT SUBCLASS 570 / 168
.~.~.~.~.~.~ Transition metal halide containing catalyst

Current as of: June, 1999
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570 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
101  DF  .~ HALOGEN CONTAINING {21}
123  DF  .~.~ Fluorine containing {21}
164  DF  .~.~.~ By reacting with hydrogen fluoride {1}
165  DF  .~.~.~.~ Catalyst utilized {2}
166  DF  .~.~.~.~.~ Metal halide containing catalyst {2}
168.~.~.~.~.~.~ Transition metal halide containing catalyst

DEFINITION

Classification: 570/168

Transition metal halide containing catalyst:

(under subclass 166) Process wherein the metal is a transition metal.

(1) Note. The transition metals are elements in which an inner electron shell rather than an outer shell is partially filled.In the periodic chart they include elements 21 through 30 (scandium through zinc), 39 through 48 (yttrium through cadinum), 57 through 80 (lathanum through mercury), and 89 through 103 (actinium through lawrencium).