US PATENT SUBCLASS 544 / 78
.~.~.~.~.~ Plural morpholine rings (i.e., plural fully hydrogenated 1, 4-oxazine rings)

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544 /   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 having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) {6}
63  DF  .~.~.~ Six-membered hetero ring consists of oxygen, nitrogen and carbon (e.g., 1,2-oxazines, etc) {8}
72  DF  .~.~.~.~ Plural oxazine rings {2}
78.~.~.~.~.~ Plural morpholine rings (i.e., plural fully hydrogenated 1, 4-oxazine rings) {6}
79  DF  .~.~.~.~.~.~> Polycyclo ring system {1}
82  DF  .~.~.~.~.~.~> Additional nitrogen containing hetero ring (e.g., thiazole, etc.) {1}
84  DF  .~.~.~.~.~.~> Phosphorus attached directly or indirectly to a morpholine ring by nonionic bonding
85  DF  .~.~.~.~.~.~> Sulfur attached directly or indirectly to a morpholine ring by nonionic bonding
86  DF  .~.~.~.~.~.~> Nitrogen attached directly or indirectly to a morpholine ring by nonionic bonding
87  DF  .~.~.~.~.~.~> Oxygen attached directly or indirectly to a morpholine ring by nonionic bonding

DEFINITION

Classification: 544/78

(under subclass 72) Compounds which contain at least two of the six-membered hetero rings, each having its oxygen in the 1-position, its nitrogen in the 4-position, and having no double bonds between ring members, i.e., morpholine rings.

SEE OR SEARCH THIS CLASS, SUBCLASS:

69, for compounds having plural morpholine rings and silicon or boron.