US PATENT SUBCLASS 562 / 556
.~.~.~.~ Sulfur or selenium

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}
400  DF  .~ Carboxylic acids and salts thereof {14}
512  DF  .~.~ Acyclic {14}
553  DF  .~.~.~ Nitrogen bonded to carbon of organic radical (e.g., amino acids, etc.) {10}
556.~.~.~.~ Sulfur or selenium {2}
557  DF  .~.~.~.~.~> Alpha N, beta S - acids or salts thereof {1}
559  DF  .~.~.~.~.~> Methionine per se or salt thereof

DEFINITION

Classification: 562/556

Sulfur or selenium:

(under subclass 553) Compounds wherein the acid contains covalently bonded sulfur or selenium:

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