US PATENT SUBCLASS 546 / 335
.~.~.~.~.~ The chalcogen, X, is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens

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

Internet Version by PATENTEC © 1999      Terms of Use


546 /   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) {1}
1  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24}
329  DF  .~.~.~ Nitrogen attached indirectly to the six-membered hetero ring by nonionic bonding {5}
334  DF  .~.~.~.~ Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding {3}
335.~.~.~.~.~ The chalcogen, X, is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens

DEFINITION

Classification: 546/335

The chalcogen, X, is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens:

(under subclass 334) Compounds in which the chalcogen, X, is part of a group, wherein the X's are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium).

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