US PATENT SUBCLASS 544 / 102
.~.~.~.~.~.~.~ Phenoxazines (including hydrogenated)

Current as of: June, 1999
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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}
98  DF  .~.~.~.~ 1,4-Oxazines {2}
99  DF  .~.~.~.~.~ Polycyclo ring system having the oxazine ring as one of the cyclos {3}
101  DF  .~.~.~.~.~.~ Tricyclo ring system having the oxazine ring as one of the cyclos {1}
102.~.~.~.~.~.~.~ Phenoxazines (including hydrogenated) {2}
103  DF  .~.~.~.~.~.~.~>.~ Plural nitrogens bonded directly to the phenoxazine
104  DF  .~.~.~.~.~.~.~>.~ Sulfur containing

DEFINITION

Classification: 544/102

(under subclass 101) Compounds wherein the tricyclo ring system has the following basic structure, illustrated below, in which the bonds between ring members may be single or double bonds. [figure]

(1) Note. This subclass provides for any compound which contains the phenoxazine skeleton, regardless of the degree of saturation or the shifting of double bonds, for example, as illustrated below, etc. [figure]

(2) Note. The gallocyanine dyes are found in this and indented subclasses.