US PATENT SUBCLASS 549 / 205
.~.~.~.~ Compound in which the hetero ring is five-membered with preservative or stabilizer


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}
201  DF  .~.~.~ With preservative or stabilizer {4}
205.~.~.~.~ Compound in which the hetero ring is five-membered with preservative or stabilizer


DEFINITION

Classification: 549/205

(under subclass 201) Products wherein the hetero ring is five-membered.