US PATENT SUBCLASS 546 / 344
.~.~.~.~ The chalcogen is in an -OH or -OM group (M is Group IA or Group IIA light metal)

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}
339  DF  .~.~.~ Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding (e.g., sulfato betaines, etc.) {3}
344.~.~.~.~ The chalcogen is in an -OH or -OM group (M is Group IA or Group IIA light metal)

DEFINITION

Classification: 546/344

The chalcogen is in an -OH or -OM group (M is group IA or group IIA light metal):

(under subclass 339) Compounds in which the chalcogen is part of an -OH or -OM group; wherein M is a Group IA or Group IIA metal having a specific gravity less than four.

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