Class 023: CHEMISTRY: PHYSICAL PROCESSES ( Manual of U.S. Patent Classification )

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Manual of U.S. Patent Classification
as of June 30, 2000


Class
023
CHEMISTRY: PHYSICAL PROCESSES


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Subclass Title
ClassTitle ===> CHEMISTRY: PHYSICAL PROCESSES
293R[Patents]PHYSICAL PROCESSES
294R[Patents] . Sublimation
294S[Patents] . . Sulfur
295R[Patents] . Crystallization
296[Patents] . . Selective
297[Patents] . . . With extraction
298[Patents] . . . From natural sources
299[Patents] . . With extraction
300[Patents] . . With added material
301[Patents] . . . Seed
302R[Patents] . . Alkali metal and ammonium compounds
303[Patents] . . . Common salt
302A[Patents] . . . Ammonium compounds
302T[Patents] . . . Sodium compounds
304[Patents] . . Alkaline earth metal and magnesium compounds
305R[Patents] . . Heavy metal or aluminum compounds
305A[Patents] . . . Aluminum compounds
305F[Patents] . . . Iron compounds
305RE[Patents] . . . Rare earth compounds
295G[Patents] . . Gel
295S[Patents] . . Solar
306[Patents] . Concentration of liquids in liquids
307[Patents] . . With direct heating
308R[Patents] . Melting out
308S[Patents] . . Sulfur
313R[Patents] . Agglomerating
314[Patents] . . Carbon
313AS[Patents] . . Silicate
313FB[Patents] . . Fluidized bed
313P[Patents] . . Pan agglomeration
293S[Patents] . Sulfur
293A[Patents] . Flaking, spraying


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Last Modified: 6 October 2000