US PATENT SUBCLASS 536 / 32
.~.~.~.~ Esters

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}
18.7  DF  .~.~ Nitrogen containing {13}
30  DF  .~.~.~ Cellulose derivatives {3}
32.~.~.~.~ Esters {3}
33  DF  .~.~.~.~.~> Sulfur containing acid
34  DF  .~.~.~.~.~> Phosphorus containing acid
35  DF  .~.~.~.~.~> Nitrates {3}

DEFINITION

Classification: 536/32

(under subclass 30) Compounds which result from the reaction of a hydroxyl group of cellulose with an acid.

(1) Note. The esterifying acid may include nitrogen and may

be organic or inorganic.

(2) Note. This subclass does not provide for compounds formed when the sole acid entering into the formation is a halogen.