US PATENT SUBCLASS 549 / 200
.~.~ Oxygen containing hetero ring (e.g., dioxirane, etc.)


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.~.~ Oxygen containing hetero ring (e.g., dioxirane, etc.) {16}
201  DF  .~.~.~> With preservative or stabilizer {4}
206  DF  .~.~.~> Heavy metal or aluminum containing {5}
213  DF  .~.~.~> Boron containing
214  DF  .~.~.~> Silicon containing {1}
216  DF  .~.~.~> Phosphorus bonded directly to the hetero ring {1}
218  DF  .~.~.~> Phosphorus attached indirectly to the hetero ring by nonionic bonding {4}
223  DF  .~.~.~> Xanthene ring system having a benzene ring bonded directly thereto para to the xanthene ring oxygen, wherein the carbon of a -COO- group is bonded directly to the benzene ring ortho to its position of attachment to the xanthene ring system, and spirolactone derivatives thereof (e.g., fluoresceins, chlorofluorans, etc.) {2}
228  DF  .~.~.~> The hetero ring contains -O-C(=X)-O- as part of its structure, wherein X is chalcogen (e.g., cyclic carbonates, etc.) {1}
231  DF  .~.~.~> Cyclic anhydrides (i.e., -C(=X)OC(=X)-, wherein the X's are the same or diverse chalcogens, is part of the hetero ring) {2}
263  DF  .~.~.~> Lactones (i.e., -C(=X)O-, wherein X is chalcogen, is part of the hetero ring) {6}
330  DF  .~.~.~> Spiro {1}
346  DF  .~.~.~> The hetero ring has at least seven members {2}
356  DF  .~.~.~> The hetero ring is six-membered {9}
429  DF  .~.~.~> The hetero ring is five-membered {14}
510  DF  .~.~.~> The hetero ring is four-membered {1}
512  DF  .~.~.~> The hetero ring is three-membered consisting of one oxygen and two carbons {7}


DEFINITION

Classification: 549/200

(under subclass 1) Compounds under Class 540, ... which contain a hetero ring having oxygen as a ring hetero atom.

(1) Note. An example of a compound provided for herein is: [figure]