US PATENT SUBCLASS 558 / 288
.~.~.~ Carbon in the ring


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
286  DF  .~ Borate esters (i.e., compounds having boron and carbon each single bonded to the same oxygen, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {4}
287  DF  .~.~ Boron and oxygen in the same ring {1}
288.~.~.~ Carbon in the ring {3}
289  DF  .~.~.~.~> Nitrogen in the ring
290  DF  .~.~.~.~> Plural rings each having boron, carbon and oxygen as ring members
291  DF  .~.~.~.~> Three oxygens attached directly to the same boron by nonionic bonding


DEFINITION

Classification: 558/288

(under subclass 287) Compounds which contain a ring having carbon, boron and oxygen as ring members.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]