| Class 23 | CHEMISTRY: PHYSICAL PROCESSES |
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![[List of Pre Grant Publications for class 23 subclass 293R]](../as.gif) | ![[List of Patents for class 23 subclass 293R]](../ps.gif) | 293R | PHYSICAL PROCESSES |
| | 294R |  Sublimation |
| | 295R | Crystallization |
| | 296 |  Selective |
| | 299 | With extraction |
| | 300 | With added material |
| | 302R | Alkali metal and ammonium compounds |
| | 304 | Alkaline earth metal and magnesium compounds |
| | 305R | Heavy metal or aluminum compounds |
| | 295G | Gel |
| | 295S | Solar |
| | 306 | Concentration of liquids in liquids |
| | 308R | Melting out |
| | 313R | Agglomerating |
| | 293S | Sulfur |
| | 293A | Flaking, spraying |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |