US PATENT SUBCLASS 556 / 66
.~.~.~.~ Containing two benzene rings each having nitrogen, chalcogen and one of the arsenics bonded directly thereto (e.g., arsphenamines, etc.)

Current as of: June, 1999
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556 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
1  DF  .~ HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) {19}
64  DF  .~.~ Arsenic, antimony, or bismuth containing (As, Sb, or Bi) {5}
65  DF  .~.~.~ Arsenic double bonded directly to arsenic (e.g., arsenobenzenes, etc.) {1}
66.~.~.~.~ Containing two benzene rings each having nitrogen, chalcogen and one of the arsenics bonded directly thereto (e.g., arsphenamines, etc.) {1}
67  DF  .~.~.~.~.~> Sulfur double bonded directly to chalcogen (e.g., neoarsphenamines, etc.)

DEFINITION

Classification: 556/66

(under subclass 65) Compounds which contain two benzene rings each having nitrogen, chalcogen (i.e., oxygen, sulfur, selenium or tellurium) and one of the arsenics bonded directly thereto.

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