US PATENT SUBCLASS 549 / 355
.~.~.~.~.~ Bicyclo ring system having the hetero ring as one of the cyclos

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


549 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {2}
200  DF  .~.~ Oxygen containing hetero ring (e.g., dioxirane, etc.) {16}
346  DF  .~.~.~ The hetero ring has at least seven members {2}
354  DF  .~.~.~.~ Polycyclo ring system having the hetero ring as one of the cyclos {1}
355.~.~.~.~.~ Bicyclo ring system having the hetero ring as one of the cyclos

DEFINITION

Classification: 549/355

(under subclass 354) Compounds wherein the polycyclo ring system consists of exactly two rings.

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