US PATENT SUBCLASS 423 / 77
.~.~.~.~ Removing undesirable matter from vapor

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
69  DF  .~ Group IVB metal (Ti, Zr, or Hf) {11}
75  DF  .~.~ Volatizing {1}
76  DF  .~.~.~ Titanium, zirconium, or hafnium {3}
77.~.~.~.~ Removing undesirable matter from vapor

DEFINITION

Classification: 423/77

(under subclass 76) Processes in which the vapor stream is treated to remove undesired materials, the Group IVB metal values remaining in vapor form during the separation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

75, and 76, for a process in which either the undesirable material or the Ti, Zr, or Hf is volatilized, there being no separation of one from the other in the vapor stream.