US PATENT SUBCLASS 514 / 507
.~.~ R-C(=X)-N-X-C containing (e.g., hydroxamic acid ester, etc.) (R is C or H and 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}
507.~.~ R-C(=X)-N-X-C containing (e.g., hydroxamic acid ester, etc.) (R is C or H and X is chalcogen)

DEFINITION

Classification: 514/507

R-C(=X)-N-X-C containing (e.g., hydroxamic acid ester, etc.) (R is C or H and X is chalcogen):

(under subclass 506) Subject matter in which the ester contains the following group: RNXC, wherein R is carbon or hydrogen and X is chalcogen (e.g., hydroxamic acid ester, etc.).

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