(1) |
In this subclass, groups for obtaining metals include obtaining the metals by non-metallurgical processes, and obtaining metal compounds by metallurgical processes. Thus, for example, group C 22 B 11/00 covers the production of silver by reduction of ammoniacal silver oxide in solution, and group C 22 B 17/00covers the production of cadmium oxide by a metallurgical process. Furthermore, although compounds of arsenic and antimony are classified in
C 01 G, production of the elements themselves is covered by C 22 B, as well as the production of their compounds by metallurgical processes. |
|
