US PATENT SUBCLASS 106 / 169.12
.~.~.~.~.~ With chalcogen hetero ring compound (e.g., lactone, maleic anhydride, furan, etc.)

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
162.1  DF  .~ Carbohydrate or derivative containing {15}
163.01  DF  .~.~ Cellulosic material {11}
168.01  DF  .~.~.~ Cellulose ester or salt thereof {21}
169.01  DF  .~.~.~.~ Cellulose nitrate {21}
169.12.~.~.~.~.~ With chalcogen hetero ring compound (e.g., lactone, maleic anhydride, furan, etc.) {1}
169.13  DF  .~.~.~.~.~.~> Plural oxygens in the hetero ring (e.g., dioxane, dioxene, etc.)

DEFINITION

Classification: 106/169.12

With chalcogen hetero ring compound (e.g., lactone, maleic anhydride, furan, etc.):

(under subclass 169.01) Compositions which contain an organic compound having a hetero ring containing chalcogen (i.e., oxygen, sulfur, selenium, and tellurium) as a hetero atom in addition to the cellulose nitrate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

163.01, (5) Note for the definition of hetero ring.

170.12+, 174.1+, for compositions containing cellulose ester or salt or cellulose ether or salt and chalcogen containing hetero ring.