US PATENT SUBCLASS 564 / 371
.~.~.~.~.~ Methylene diamines

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
305  DF  .~.~ Benzene ring containing {24}
336  DF  .~.~.~ Amino nitrogen attached to aryl ring or ring system by an acyclic carbon or chain {11}
367  DF  .~.~.~.~ The chain contains nitrogen between the aryl ring or ring system and amino nitrogen {2}
371.~.~.~.~.~ Methylene diamines

DEFINITION

Classification: 564/371

(under subclass 367) Compounds wherein the chain contains a methylene diamine group.

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