US PATENT SUBCLASS 536 / 89
.~.~.~.~.~ Acid employed in subsequent treatment

Current as of: June, 1999
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536 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1.11  DF  .~ Carbohydrates or derivatives {15}
56  DF  .~.~ Cellulose or derivative {4}
84  DF  .~.~.~ Ethers {7}
85  DF  .~.~.~.~ Subsequent treatment process {4}
89.~.~.~.~.~ Acid employed in subsequent treatment

DEFINITION

Classification: 536/89

(under subclass 85) Processes wherein an organic acid or an inorganic acid is employed in the subsequent treatment.