| Patents for C01F 17 - Compounds of the rare-earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides (4,902) | |
|---|---|
| 09/1976 | |
| 09/14/1976 | US3980763 Process and composition for separation of oxygen from air using Pr-Ce as the carrier |
| 04/1976 | |
| 04/06/1976 | US3948793 Ultra-pure metal halide particles |