US PATENT SUBCLASS 562 / 891
.~.~.~.~ Ether or carboxylic acid ester reactant


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
887  DF  .~ Carboxylic acid anhydrides (i.e., compounds having the -C(=O)-O-C(=O)- group) {2}
888  DF  .~.~ Processes of forming the -C(=O)-O-C(=O)- group {7}
890  DF  .~.~.~ Carbon monoxide or metal carbonyl reactant {1}
891.~.~.~.~ Ether or carboxylic acid ester reactant


DEFINITION

Classification: 562/891

(under subclass 890) Processes wherein an ether or a carboxylic acid ester is used as a reactant.