US PATENT SUBCLASS 514 / 512
.~.~ X-C(=X)-X containing (e.g., carbonic acid ester, thiocarbonic acid ester, etc.) (X is chalcogen)

Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
506  DF  .~ Ester DOAI {10}
512.~.~ X-C(=X)-X containing (e.g., carbonic acid ester, thiocarbonic acid ester, etc.) (X is chalcogen)

DEFINITION

Classification: 514/512

X-C(=X)-X containing (e.g., carbonic acid ester, thiocarbonic acid ester, etc.) (X is chalcogen):

(under subclass 506) Subject matter wherein the ester

contains the group XX, wherein X is chalcogen.

(1) Note. This subclass contains, for example: [figure] [figure] [caption], etc.