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[Search a list of Patent Appplications for class 23]  Class   23CHEMISTRY: PHYSICAL PROCESSES
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   [List of Patents for class 23 subclass 293R]  293R           PHYSICAL PROCESSES
   [List of Patents for class 23 subclass 294R]  294R           Subclass 294R indent level is 1 Sublimation
    [List of Patents for class 23 subclass 294S]  294S           Subclass 294S indent level is 2 Sulfur
   [List of Patents for class 23 subclass 295R]  295R           Subclass 295R indent level is 1 Crystallization
   [List of Patents for class 23 subclass 296]  296           Subclass 296 indent level is 2 Selective
    [List of Patents for class 23 subclass 297]  297           Subclass 297 indent level is 3 With extraction
    [List of Patents for class 23 subclass 298]  298           Subclass 298 indent level is 3 From natural sources
    [List of Patents for class 23 subclass 299]  299           Subclass 299 indent level is 2 With extraction
   [List of Patents for class 23 subclass 300]  300           Subclass 300 indent level is 2 With added material
    [List of Patents for class 23 subclass 301]  301           Subclass 301 indent level is 3 Seed
   [List of Patents for class 23 subclass 302R]  302R           Subclass 302R indent level is 2 Alkali metal and ammonium compounds
    [List of Patents for class 23 subclass 303]  303           Subclass 303 indent level is 3 Common salt
    [List of Patents for class 23 subclass 302A]  302A           Subclass 302A indent level is 3 Ammonium compounds
    [List of Patents for class 23 subclass 302T]  302T           Subclass 302T indent level is 3 Sodium compounds
    [List of Patents for class 23 subclass 304]  304           Subclass 304 indent level is 2 Alkaline earth metal and magnesium compounds
   [List of Patents for class 23 subclass 305R]  305R           Subclass 305R indent level is 2 Heavy metal or aluminum compounds
    [List of Patents for class 23 subclass 305A]  305A           Subclass 305A indent level is 3 Aluminum compounds
    [List of Patents for class 23 subclass 305F]  305F           Subclass 305F indent level is 3 Iron compounds
    [List of Patents for class 23 subclass 305RE]  305RE           Subclass 305RE indent level is 3 Rare earth compounds
    [List of Patents for class 23 subclass 295G]  295G           Subclass 295G indent level is 2 Gel
    [List of Patents for class 23 subclass 295S]  295S           Subclass 295S indent level is 2 Solar
   [List of Patents for class 23 subclass 306]  306           Subclass 306 indent level is 1 Concentration of liquids in liquids
    [List of Patents for class 23 subclass 307]  307           Subclass 307 indent level is 2 With direct heating
   [List of Patents for class 23 subclass 308R]  308R           Subclass 308R indent level is 1 Melting out
    [List of Patents for class 23 subclass 308S]  308S           Subclass 308S indent level is 2 Sulfur
   [List of Patents for class 23 subclass 313R]  313R           Subclass 313R indent level is 1 Agglomerating
    [List of Patents for class 23 subclass 314]  314           Subclass 314 indent level is 2 Carbon
    [List of Patents for class 23 subclass 313AS]  313AS           Subclass 313AS indent level is 2 Silicate
    [List of Patents for class 23 subclass 313FB]  313FB           Subclass 313FB indent level is 2 Fluidized bed
    [List of Patents for class 23 subclass 313P]  313P           Subclass 313P indent level is 2 Pan agglomeration
    [List of Patents for class 23 subclass 293S]  293S           Subclass 293S indent level is 1 Sulfur
    [List of Patents for class 23 subclass 293A]  293A           Subclass 293A indent level is 1 Flaking, spraying
 
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