US PATENT SUBCLASS 536 / 30
.~.~.~ Cellulose derivatives

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.~.~.~ Cellulose derivatives {3}
31  DF  .~.~.~.~> Nitrogen containing hetero ring (e.g., morpholine, etc.)
32  DF  .~.~.~.~> Esters {3}
43  DF  .~.~.~.~> Ethers {1}

DEFINITION

Classification: 536/30

(under subclass 18.7) Compounds which are nitrogen containing derivatives of repeating glucose units, which units have the following structure: [figure]